Cheap flights from St. Louis to Philadelphia (STL - PHL) from $33

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — PHL
Jun 4 — Jun 111

The best prices from Lambert-St Louis to Philadelphia are usually found in December or January, booked 87 days in advance, depart on a Tuesday or Saturday and return on a Saturday

Cheap flight deals from St. Louis to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 30, 2024.

Popular in

November

Cheapest in

December

Round-trip from

$227

One-way from

$95
High demand for flights, 10% potential price rise
Best time to find cheap flights, 13% potential price drop
From Lambert-St Louis to Philadelphia
One-way flight from Lambert-St Louis to Philadelphia

What is the cheapest day to fly round-trip from St. Louis to Philadelphia?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 50% when planning your travel around this day of the week.

How far in advance should I book a flight from St. Louis to Philadelphia?

Users have found that booking a flight from St. Louis to Philadelphia at least 59 days early can save you up to 49% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from St. Louis to Philadelphia for as little as $264 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $482 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Philadelphia?

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, December can be a great choice for travel to Philadelphia. Flights to Philadelphia from St. Louis in December are about $355 on average during December, but can be found for as low as $167.

What is the cheapest time of day to fly from STL to PHL?

It’s typically best to fly out from St. Louis to Philadelphia in the evening. Doing so could potentially save you 56% on the flight price compared to flying at noon, which is usually more expensive.

Cheap Delta flights from St. Louis to Philadelphia

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Philadelphia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Find some of the cheapest Delta flights traveling from St. Louis to Philadelphia. Make sure to double check the flight details before booking.
Wed 7/173:49 pmSTL - PHL
1 stop6h 27mDelta
Sat 7/205:30 amPHL - STL
1 stop4h 33mDelta
Deal found 5/29$196
Mon 7/157:01 pmSTL - PHL
1 stop4h 35mDelta
Fri 7/199:34 amPHL - STL
1 stop4h 52mDelta
Deal found 5/29$198
Fri 7/197:01 pmSTL - PHL
1 stop4h 35mDelta
Sun 7/285:30 amPHL - STL
1 stop4h 32mDelta
Deal found 5/29$200
Thu 6/137:06 pmSTL - PHL
1 stop4h 31mDelta
Mon 6/176:26 pmPHL - STL
1 stop6h 17mDelta
Deal found 5/29$218
Sat 6/87:15 amSTL - PHL
2 stops9h 11mDelta
Tue 6/1112:28 pmPHL - STL
2 stops10h 27mDelta
Deal found 5/29$1,744
Sat 6/810:15 amSTL - PHL
2 stops11h 54mDelta
Tue 6/116:00 amPHL - STL
2 stops9h 33mDelta
Deal found 5/30$1,784

Cheap Frontier flights from St. Louis to Philadelphia

Explore cheap flight options specifically provided by Frontier for the route between St. Louis and Philadelphia. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Have a look at some of the cheapest available Frontier flights departing from St. Louis and landing in Philadelphia. Ensure the flight price, dates, time, and airline match your criteria before you book.
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/1512:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$58
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 7/2012:54 pmPHL - STL
Nonstop2h 25mFrontier
Deal found 5/29$68
Mon 6/1710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 6/198:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$78
Wed 7/109:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 7/157:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$80
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/197:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$81
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$82
Sat 8/103:09 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 8/168:46 amPHL - STL
Nonstop2h 30mFrontier
Deal found 5/29$88
Wed 7/319:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 8/57:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$90
Sat 7/203:09 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/267:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$91

Cheap St. Louis to Philadelphia flights in May & June 2024

Find cheap flight options from St. Louis to Philadelphia specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Prices were last updated on May 30, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Philadelphia in 2024. More deals are always being added, so be sure to check back regularly.
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/1512:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$58
Sat 6/153:08 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/2212:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$68
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$78
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$82
Tue 6/113:23 pmSTL - PHL
1 stop8h 23mMultiple Airlines
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mMultiple Airlines
Deal found 5/29$83
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$96
Fri 6/1410:36 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/178:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$97
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$106
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$108

St. Louis to Philadelphia 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Philadelphia in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Philadelphia in 2024. More deals are always being added, so be sure to check back regularly.
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/1512:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$58
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 7/2012:54 pmPHL - STL
Nonstop2h 25mFrontier
Deal found 5/29$68
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$78
Wed 7/109:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 7/157:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$80
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/197:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$81
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$82
Tue 6/113:23 pmSTL - PHL
1 stop8h 23mMultiple Airlines
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mMultiple Airlines
Deal found 5/29$83
Sat 8/103:09 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 8/168:46 amPHL - STL
Nonstop2h 30mFrontier
Deal found 5/29$88
Wed 7/319:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 8/57:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$90

Non-stop flights to Philadelphia from St. Louis

Discover non-stop flight options from St. Louis to Philadelphia. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
For a shorter flight, select one of these non-stop flights from St. Louis to Philadelphia. Users seeking other options on flights from St. Louis to Philadelphia should update the search form at the top of the page.
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/1512:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$58
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 7/2012:54 pmPHL - STL
Nonstop2h 25mFrontier
Deal found 5/29$68
Mon 6/1710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 6/198:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$78
Wed 7/109:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 7/157:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$80
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/197:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$81
Sat 8/103:09 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 8/168:46 amPHL - STL
Nonstop2h 30mFrontier
Deal found 5/29$88
Wed 7/319:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 8/57:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$90
Sat 7/203:09 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/267:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/29$91
Fri 7/199:32 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 7/2012:54 pmPHL - STL
Nonstop2h 25mFrontier
Deal found 5/29$92

St. Louis to Philadelphia flights leaving soon

Find last-minute flight options from St. Louis to Philadelphia for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Users seeking a last-minute flight from St. Louis to Philadelphia should consider booking one of these fares. Tip: verify your flight details before completing your reservation.
Sat 6/83:08 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$58
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$78
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$82
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$108
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mMultiple Airlines
Tue 6/115:05 amPHL - STL
1 stop10h 18mMultiple Airlines
Deal found 5/29$121
Thu 6/67:44 pmSTL - PHL
2 stops17h 30mFrontier
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/29$128
Sat 6/83:08 pmSTL - PHL
Nonstop2h 12mMultiple Airlines
Mon 6/102:04 pmPHL - STL
1 stop21h 53mMultiple Airlines
Deal found 5/30$154
Thu 6/63:32 pmSTL - PHL
1 stop13h 04mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/30$158
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Thu 6/65:51 pmPHL - STL
1 stop16h 49mFrontier
Deal found 5/29$168

One-way flights to Philadelphia from St. Louis

Search for one-way flight options from St. Louis to Philadelphia. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Philadelphia. For those needing a return trip from St. Louis, there is a search form available above.
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/29$33
Wed 9/43:32 pmSTL - PHL
Nonstop2h 13mFrontier
Deal found 5/30$37
Sat 7/133:09 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/28$39
Sat 8/33:09 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/30$41
Mon 7/110:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/29$44
Fri 8/3011:16 amSTL - PHL
Nonstop2h 13mFrontier
Deal found 5/29$49
Mon 7/229:32 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/30$51
Fri 6/1410:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/29$52
Wed 6/510:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/30$59

Find flights from St. Louis to Philadelphia within your budget

Customize your flight search to find flights from St. Louis to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$58 - $196

Route

Depart

Return

Price

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 6/12

Nonstop2h 12m

Philadelphia

Sat 6/15

Nonstop2h 27m

$58

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/17

Nonstop2h 12m

Philadelphia

Sat 7/20

Nonstop2h 25m

$68

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 6/17

Nonstop2h 12m

Philadelphia

Wed 6/19

Nonstop2h 27m

$78

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/10

Nonstop2h 12m

Philadelphia

Mon 7/15

Nonstop2h 24m

$80

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 6/11

1 stop8h 23m

Philadelphia

Wed 6/26

Nonstop2h 27m

$83

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 6/11

1 stop8h 23m

Philadelphia

Wed 6/26

1 stop25h 16m

$123

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Tue 7/9

Nonstop2h 14m

Philadelphia

Tue 7/9

Nonstop2h 41m

$126

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Mon 6/10

1 stop6h 09m

Philadelphia

Tue 6/11

1 stop5h 57m

$186

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/17

1 stop6h 27m

Philadelphia

Sat 7/20

1 stop4h 33m

$196

Flights are sorted by cheapest first

Deals found on 5/29

How far ahead should I book a flight from St. Louis to Philadelphia?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Philadelphia. Price data was last updated on May 24, 2024.
The price you pay for your flight from St. Louis to Philadelphia may vary depending on when you book. For the best chance of a lower fare, look to book 87 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Search Deals

What is the cheapest day to fly from St. Louis to Philadelphia?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Philadelphia. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Philadelphia flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Best time to book a flight from St. Louis to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Temperature and rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature and rainfall totals by month.

PHL

Temperature

33.8 - 78.8 °F

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated May 30, 2024.
See what other customers who have flown with Delta, Frontier and Spirit Airlines from St. Louis to Philadelphia have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

8.1
Very good
9,192 reviews
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

8.0
Very good
10,457 reviews
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

7.4
Good
10,777 reviews
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

7.3
Good
14,284 reviews
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

6.4
Okay
8,616 reviews
8.1
Very good
9,192 reviews

Comfort

7.9

Boarding

8.2

Crew

8.6

Overall

8.1

Food

7.3

Entertainment

7.3

Reviews

1 / 10

Crew and airport staff were excellent. They accommodated my needs and were super professional and kind.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airports do I use to fly from St. Louis to Philadelphia?

    Booking a flight from Lambert-St Louis (STL) to Philadelphia (PHL) is your only option if you wish to fly from St. Louis to Philadelphia. On a typical day, there are 4 flights from Lambert-St Louis to Philadelphia, all of which are around 2h 05m for a nonstop flight. You can also purchase a plane ticket from 5 airlines when you book a flight from Lambert-St Louis to Philadelphia.

  • Can I find flights from St. Louis to Philadelphia for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Philadelphia for under $100. The cheapest flight booked recently is on Frontier for just $58, but on average you can expect to pay $97.

  • Are there nonstop flights from St. Louis to Philadelphia for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Philadelphia under $100. A good price for a nonstop flight from St. Louis to Philadelphia is less than $110.

  • Are there last-minute flights available from St. Louis to Philadelphia for under $100?

    There are currently 20+ open flights from St. Louis to Philadelphia within the next 7 days for less than $100.

  • What days are nonstop flights available from St. Louis to Philadelphia?

    You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Saturday.

  • How popular is this St. Louis to Philadelphia flight route?

  • How many flights depart from St. Louis to Philadelphia on average per day?

    On average 11 flights depart from St. Louis to Philadelphia per day.
    Early Morning (Midnight to 6am) - 9% of flight departures
    Morning (6am - Noon) - 82% of flight departures
    Evening (6pm - Midnight) - 9% of flight departures

  • How long is the flight from St. Louis to Philadelphia?

    There are many flights that can get you from St. Louis to Philadelphia in 2h 12m. Fly via Frontier, Spirit Airlines, or American Airlines to get the fastest option. Airlines will cover a distance of 816 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from St. Louis to Philadelphia round-trip?

    Cheapflights users have booked flights from St. Louis to Philadelphia round-trip from $58. Other airlines that can offer you cheap pricing are Spirit Airlines, from $123, and American Airlines, from $126. These flights start at 83% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from St. Louis to Philadelphia one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $33. Users have also found prices from $66 and $80 on American Airlines and Spirit Airlines, respectively.

  • What are the most reliable airlines from St. Louis to Philadelphia?

    No one likes to see their flight delayed. When booking a flight from St. Louis to Philadelphia consider choosing Qatar Airways (85%), American Airlines (85%) or Aer Lingus (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from St. Louis to Philadelphia?

    While on average a flight from St. Louis to Philadelphia is generally $1,618, our data shows the cheapest flight currently is $43. When looking at the most popular route, (Lambert-St Louis - Philadelphia), you can expect to pay $83 for that flight.

  • What does STL to PHL mean?

    Lambert-St Louis Airport is STL and Philadelphia Airport is PHL. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service.

  • Can I find deals for flights from St. Louis to Philadelphia that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Philadelphia flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Philadelphia with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Philadelphia flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Philadelphia that include hotel bookings?

    Yes. In addition to deals on St. Louis to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Philadelphia.

  • Can I find deals for business class flights from St. Louis to Philadelphia?

    Yes. Cheapflights offers flight deals from St. Louis to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Philadelphia that allow pets onboard?

    Many airlines flying from St. Louis to Philadelphia offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Philadelphia?

    Yes, you can often find last-minute deals on St. Louis to Philadelphia flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Philadelphia flight deals updated?

    The St. Louis to Philadelphia flight deals you see on this page were last updated on 5/30.

  • What are the most popular airlines that fly from St. Louis to Philadelphia?

  • What is the cheapest month to book a flight from St. Louis to Philadelphia?

    Currently, October is the cheapest month in which you can book a flight from St. Louis to Philadelphia (average of $227). Flying from St. Louis to Philadelphia in July is currently the most expensive (average of $298). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for St. Louis to Philadelphia
See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from St. Louis to Philadelphia

Discover the top 5 airlines that operate flights from St. Louis to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,784,634 searches. Data last updated May 30, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$170FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$112Average$151FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$201Average$377FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$225Average$385FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$434Average$570FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Search flights from St. Louis to Philadelphia by cabin class

Find flights from St. Louis to Philadelphia, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from St. Louis to Philadelphia

Find hourly flight availability from St. Louis to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 30, 2024.
16%of flight departuresEarly morningMidnight to 6 am
77%of flight departuresMorning6 am to noon
2%of flight departuresAfternoonNoon to 6 pm
5%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Weekly flight availability from St. Louis to Philadelphia

Explore weekly flight availability from St. Louis to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 30, 2024.
Sunday5daily flights
Monday5daily flights
Tuesday4daily flights
Wednesday4daily flights
Thursday4daily flights
Friday5daily flights
Saturday4daily flights

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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Philadelphia?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Philadelphia from St. Louis.

Can Cheapflights find flights from St. Louis to Philadelphia with no change fees?

Yes, we can. To see specific flights from St. Louis to Philadelphia with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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