HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Portland to Ontario (PWM - ONT) from $142

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 10/8. 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.
PWM — ONT
Jun 4 — Jun 111
From?
To?
Tue 6/4
Tue 6/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from Portland to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Ontario (ONT). 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

September

Average price

$487

Round-trip from

$238
High demand for flights, 48% potential price rise
Search Deals
Best time to find cheap flights, 32% potential price drop
Search Deals
Average for round-trip flights in May 2024
Search Deals
From Portland to Ontario
Search Deals

What is the cheapest day to fly round-trip from Portland, Maine to Ontario?

It’s generally more expensive to depart on a Tuesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

How far in advance should I book a flight from Portland, Maine to Ontario?

Travelers have found it’s best to book a flight 37 days in advance to save up to 116% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 37 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Portland, Maine to Ontario 1-2 weeks in advance for as low as $383, or $715 for flights within the next 24 hours.

What is the cheapest month to fly from Portland, Maine to Ontario?

The best pricing can be found in the month of September. Prices to Ontario from Portland, Maine average $483. You can even find prices in September for less than $483, as users have found deals to Ontario from as low as $252. The month of December appears to be one of the more expensive times to travel to Ontario from Portland, Maine. Flying in the targeted month can save you up to 27%.

What is the cheapest time of day to fly from PWM to ONT?

One of the essential ways to save on airfare from Portland, Maine to Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 33% on airfare.

Cheap JetBlue flights from Portland to Ontario

Explore cheap flight options specifically provided by JetBlue for the route between Portland and Ontario. 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.
Take a look at some of the lowest-priced JetBlue flights heading from Portland to Ontario. Make sure to double check the flight details before booking.
Wed 10/21:06 pmPWM - ONT
1 stop11h 59mJetBlue
Mon 10/711:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 5/30$300
Thu 7/49:45 amPWM - ONT
1 stop15h 53mJetBlue
Wed 7/1011:59 pmONT - PWM
1 stop16h 15mJetBlue
Deal found 5/29$450
Tue 6/112:24 pmPWM - ONT
1 stop10h 45mJetBlue
Tue 9/1011:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 5/29$759
Thu 6/62:24 pmPWM - ONT
1 stop10h 45mJetBlue
Fri 6/711:40 pmONT - PWM
1 stop10h 49mJetBlue
Deal found 5/30$766

Cheap American Airlines flights from Portland to Ontario

Explore cheap flight options specifically provided by American Airlines for the route between Portland and Ontario. 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.
To aid your search, here are some of the cheapest American Airlines flights we've found from Portland to Ontario. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Thu 6/134:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$452
Wed 6/124:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$454
Thu 6/131:09 pmPWM - ONT
2 stops11h 31mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$459
Wed 6/126:00 amPWM - ONT
2 stops12h 51mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$460
Thu 6/64:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$481
Thu 6/64:00 pmPWM - ONT
2 stops10h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$486
Thu 6/61:05 pmPWM - ONT
2 stops12h 04mAmerican Airlines
Wed 6/1211:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/30$491
Wed 6/124:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Sun 6/2310:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/29$502
Wed 6/126:00 amPWM - ONT
2 stops12h 51mAmerican Airlines
Sun 6/2310:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/29$509

Cheap Portland to Ontario flights in May & June 2024

Find cheap flight options from Portland to Ontario 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.
These are some of the most attractive deals on flights from Portland to Ontario in 2024. Check back in a little while for more flight options.
Thu 6/134:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$452
Wed 6/124:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$454
Thu 6/131:09 pmPWM - ONT
2 stops11h 31mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$459
Wed 6/126:00 amPWM - ONT
2 stops12h 51mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$460
Thu 6/64:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$481
Thu 6/64:00 pmPWM - ONT
2 stops10h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$486
Thu 6/61:05 pmPWM - ONT
2 stops12h 04mAmerican Airlines
Wed 6/1211:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/30$491
Wed 6/124:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Sun 6/2310:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/29$502
Wed 6/126:00 amPWM - ONT
2 stops12h 51mAmerican Airlines
Sun 6/2310:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/29$509

Portland to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Portland and Ontario 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.
These are some of the most attractive deals on flights from Portland to Ontario in 2024. Check back in a little while for more flight options.
Fri 9/201:06 pmPWM - ONT
1 stop12h 15mJetBlue
Sun 9/2911:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 5/30$274
Wed 10/21:06 pmPWM - ONT
1 stop11h 59mJetBlue
Mon 10/711:36 pmONT - PWM
1 stop9h 35mJetBlue
Deal found 5/30$300
Thu 7/49:45 amPWM - ONT
1 stop15h 53mJetBlue
Wed 7/1011:59 pmONT - PWM
1 stop16h 15mJetBlue
Deal found 5/29$450
Thu 6/134:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$452
Wed 6/124:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$454
Thu 6/131:09 pmPWM - ONT
2 stops11h 31mAmerican Airlines
Mon 6/2411:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/29$459
Wed 6/126:00 amPWM - ONT
2 stops12h 51mAmerican Airlines
Sat 6/227:26 pmONT - PWM
2 stops13h 32mAmerican Airlines
Deal found 5/29$460
Thu 6/64:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$481
Thu 6/64:00 pmPWM - ONT
2 stops10h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$486

Portland to Ontario flights leaving soon

Find last-minute flight options from Portland to Ontario 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.
Check out these flights departing soon from Portland to Ontario. Users should examine the flight details to ensure there are no surprises.
Thu 6/64:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$481
Thu 6/64:00 pmPWM - ONT
2 stops10h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$486
Thu 6/61:05 pmPWM - ONT
2 stops12h 04mAmerican Airlines
Wed 6/1211:59 pmONT - PWM
2 stops12h 11mAmerican Airlines
Deal found 5/30$491
Fri 6/74:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Wed 6/1210:45 pmONT - PWM
1 stop10h 29mAmerican Airlines
Deal found 5/30$567
Thu 6/66:00 amPWM - ONT
2 stops14h 28mUnited Airlines
Wed 6/126:00 amONT - PWM
2 stops14h 58mUnited Airlines
Deal found 5/30$665
Thu 6/63:20 pmPWM - ONT
1 stop8h 28mUnited Airlines
Wed 6/126:00 amONT - PWM
2 stops14h 58mUnited Airlines
Deal found 5/30$675
Thu 6/62:24 pmPWM - ONT
1 stop10h 45mJetBlue
Fri 6/711:40 pmONT - PWM
1 stop10h 49mJetBlue
Deal found 5/30$766
Thu 6/63:20 pmPWM - ONT
1 stop8h 28mUnited Airlines
Wed 6/125:15 amONT - PWM
1 stop7h 24mUnited Airlines
Deal found 5/30$817
Thu 6/66:05 amPWM - ONT
1 stop8h 35mDelta
Thu 6/1310:00 pmONT - PWM
2 stops11h 07mDelta
Deal found 5/30$856

One-way flights to Ontario from Portland

Search for one-way flight options from Portland to Ontario. 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 best available options we've come across on one-way flights from Portland to Ontario. For those needing a return trip from Portland, there is a search form available above.
Tue 10/85:13 pmPWM - ONT
1 stop7h 47mAmerican Airlines
Deal found 5/29$142
Fri 6/211:40 pmPWM - ONT
1 stop9h 02mDelta
Deal found 5/30$179
Fri 6/211:05 pmPWM - ONT
2 stops11h 35mAmerican Airlines
Deal found 5/30$223
Fri 6/214:00 pmPWM - ONT
1 stop9h 59mAmerican Airlines
Deal found 5/28$228
Fri 6/211:05 pmPWM - ONT
2 stops11h 35mAmerican Airlines
Deal found 5/28$233
Fri 6/71:40 pmPWM - ONT
1 stop9h 02mDelta
Deal found 5/29$242
Thu 6/62:27 pmPWM - ONT
2 stops11h 20mDelta
Deal found 5/29$264
Wed 8/149:40 amPWM - ONT
2 stops14h 31mUnited Airlines
Deal found 5/29$274
Wed 6/122:24 pmPWM - ONT
1 stop10h 45mJetBlue
Deal found 5/29$275

Find flights from Portland to Ontario within your budget

Customize your flight search to find flights from Portland to Ontario 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

$300 - $661

Route

Depart

Return

Price

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 10/2

1 stop11h 59m

Ontario

Mon 10/7

1 stop9h 35m

$300

PortlandOntario

PWM - ONT

PWMONT

Portland

Thu 7/4

1 stop15h 53m

Ontario

Wed 7/10

1 stop16h 15m

$450

PortlandOntario

PWM - ONT

PWMONT

Portland

Thu 6/13

1 stop9h 59m

Ontario

Mon 6/24

2 stops12h 11m

$452

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 6/12

1 stop9h 59m

Ontario

Sat 6/22

2 stops13h 32m

$454

PortlandOntario

PWM - ONT

PWMONT

Portland

Thu 6/13

2 stops11h 31m

Ontario

Mon 6/24

2 stops12h 11m

$459

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 6/12

2 stops12h 51m

Ontario

Sat 6/22

2 stops13h 32m

$460

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 6/12

1 stop9h 59m

Ontario

Sun 6/23

1 stop10h 29m

$502

PortlandOntario

PWM - ONT

PWMONT

Portland

Thu 7/4

2 stops14h 31m

Ontario

Sun 7/7

1 stop7h 33m

$647

PortlandOntario

PWM - ONT

PWMONT

Portland

Wed 6/12

2 stops13h 10m

Ontario

Sun 6/23

2 stops12h 55m

$661

Flights are sorted by cheapest first

Deals found on 5/30

What is the cheapest day to fly from Portland, Maine to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Portland to Ontario. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Portland, Maine to Ontario flight should consider departing on Wednesday mornings when fares are most often at their lowest. Friday mornings 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 Portland to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Portland 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 Ontario by month

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

LAX

Temperature

57.2 - 73.4 °F

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated May 30, 2024.
To help decide which airline to fly from Portland to Ontario, see what other customers have to say about JetBlue, American Airlines and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

Alaska Airlines
8.1
Very good
9,192 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

Delta
8.0
Very good
10,457 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

JetBlue
7.6
Good
4,365 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

United Airlines
7.4
Good
10,777 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

Reviews

1 / 10

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

American Airlines
7.3
Good
14,284 reviews
Alaska Airlines
8.1
Very good
9,192 reviews
Check prices

Crew

8.6

Entertainment

7.3

Food

7.3

Comfort

7.9

Boarding

8.2

Overall

8.1

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 Portland to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find flights from Portland, Maine to Ontario for under $300 on Cheapflights?

    Yes, there are multiple flights from Portland, Maine to Ontario for under $300. The cheapest flight booked recently is on JetBlue for just $300, but on average you can expect to pay $557.

  • Are there last-minute flights available from Portland, Maine to Ontario for under $500?

    There are currently 14+ open flights from Portland, Maine to Ontario within the next 7 days for less than $500.

  • What are the cheapest airlines flying from Portland, Maine to Ontario round-trip?

    JetBlue, at $300, was found to be the cheapest airline from Portland, Maine to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Users have found that JetBlue is 55% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland, Maine to Ontario one-way?

    The cheapest airlines for a one-way flight from Portland, Maine to Ontario are American Airlines ($142), Delta ($179), and United Airlines ($274).

  • What does PWM to ONT mean?

    Portland Airport is PWM and Ontario Airport is ONT. 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 Portland to Ontario that include extra baggage allowance?

    The amount of baggage you can bring on your Portland to Ontario 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 Portland to Ontario with specific airlines?

    Yes, Cheapflights allows you to browse and filter Portland to Ontario 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 Portland to Ontario that include hotel bookings?

    Yes. In addition to deals on Portland to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Ontario?

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

  • Can I find deals for business class flights from Portland to Ontario?

    Yes. Cheapflights offers flight deals from Portland to Ontario 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 Portland to Ontario that allow pets onboard?

    Many airlines flying from Portland to Ontario 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 Portland to Ontario?

    Yes, you can often find last-minute deals on Portland to Ontario 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 Portland, Maine to Ontario flight deals updated?

    The Portland, Maine to Ontario flight deals you see on this page were last updated on 5/30.

  • What is the cheapest month to book a flight from Portland, Maine to Ontario?

    Currently, October is the cheapest month in which you can book a flight from Portland, Maine to Ontario (average of $238). Flying from Portland, Maine to Ontario in July is currently the most expensive (average of $328). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Ontario
See prices for flight routes from nearby airports that may be better suited for you.

Boston to Los Angeles flights
Boston to Las Vegas flights
Boston to San Francisco flights
Boston to San Diego flights
Boston to Burbank flights
Boston to Ontario flights
Boston to Oakland flights
Boston to Santa Ana flights
Boston to San Jose flights
Boston to Sacramento flights
Boston to Reno flights
Portland to Las Vegas flights
Boston to Santa Barbara flights
Portland to Los Angeles flights
Boston to Long Beach flights
Portland to San Diego flights
Bangor to Las Vegas flights
Boston to Fresno flights
Boston to Palm Springs flights
Portland to San Francisco flights
Boston to Medford flights
Bangor to San Francisco flights
Portland to Santa Ana flights
Bangor to Reno flights
Portland to San Jose flights
Bangor to San Diego flights
Boston to Monterey flights
Bangor to Los Angeles flights
Boston to Santa Rosa flights
Portland to Burbank flights
Portland to Reno flights
Portland to Palm Springs flights
Boston to Arcata flights
Boston to San Luis Obispo flights
Augusta to Las Vegas flights
Portland to Santa Barbara flights
Portland to Oakland flights
Portland to Sacramento flights
Boston to Redding flights
Boston to Tijuana flights
Boston to Yuma flights
Rockland to Las Vegas flights
Bar Harbor to Las Vegas flights
Rockland to Los Angeles flights
Portland to Fresno flights
Boston to Mammoth Lakes flights
Portland to Medford flights
Bangor to Ontario flights

Top 2 airlines flying from Portland to Ontario

Discover the top 2 airlines that operate flights from Portland to Ontario. 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
American AirlinesCheapest$261Average$533FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$351Average$761FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Boston to London flights
New York to Dallas flights
Detroit to Toronto flights
New York to Bermuda flights
Miami to Cuba flights
Miami to Los Angeles flights
San Diego to Chicago flights
Seattle to Hawaii flights
Las Vegas to New York flights
Las Vegas to Los Angeles flights
USA to India flights
Portland, Maine to Porto flights

Search flights from Portland to Ontario by cabin class

Find flights from Portland to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Laayoune Hassan I
Flights to Virac
Flights to Figari-Sud Corse
Flights to Edremit/Korfez
Flights to Rhinelander Oneida County
Flights to Girona Costa Brava
Flights to Brainerd Crow Wing County
Flights to Parikia Paros
Flights to Cortez Montezuma County
Flights to Miyakojima Hirara
Flights to Zadar
Flights to Trapani Birgi
Flights to Provincetown
Flights to Oran Es Senia
Flights to Constanţa Mihail Kogalniceanu
Flights to Vava'u Lupepau'U
Flights to Urumqi
Flights to Hakodate
Flights to Naxos
Flights to Dalaman
Flights to Hyannis Barnstable
Flights to Devils Lake
Flights to Bastia Poretta
Flights to Karpathos

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Ontario?

Cheapflights helps you search for flights from Portland to Ontario via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portland to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Portland to Ontario.

Can Cheapflights find flights from Portland to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from Portland to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from Portland to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines