Question 1

What are the cheapest airlines flying from Seattle to London round-trip?

Accepted Answer

Cheapflights users have booked flights from Seattle to London round-trip from $648. Other airlines that can offer you cheap pricing are KLM, from $672, and Lufthansa, from $699. Users have found that SWISS is 24% cheaper than the other options available to this destination.

Question 2

When is the best time to book a flight from Seattle to London?

Accepted Answer

Currently, November is the cheapest month in which you can book a flight from Seattle to London (average of $653). Flying from Seattle to London in June is currently the most expensive (average of $1,150). 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.

January

$673

February

$662

March

$715

April

$692

May

$733

June

$1,150

July

$976

August

$775

September

$745

October

$708

November

$653

December

$672

Question 3

When is the best time to book a flight from Seattle to London?

Accepted Answer

Booking 7 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Question 4

When is the cheapest time to fly from Seattle to London?

Accepted Answer

Travelers seeking maximum savings on their Seattle to London flight should consider departing on Wednesday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 5

How recently were the Seattle to London flight deals updated?

Accepted Answer

The Seattle to London flight deals you see on this page were last updated on 5/16.

Question 6

What are the most popular airlines that fly from Seattle to London?

Accepted Answer

Before booking your flight from Seattle to London check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

Question 7

What are the most popular routes from Seattle to London?

Accepted Answer

When deciding which route to take from Seattle to London consider Seattle/Tacoma Intl - London Heathrow, Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London City as they are the most popular.

Question 8

What are the cheapest flights from Seattle to London?

Accepted Answer

Looking at all options, your cheapest flight can be booked for $487. While the most popular route (Seattle/Tacoma Intl - London Heathrow) can be booked for $574 on average our data indicates $3,063 when flying from Seattle to London.

Question 9

What are the most reliable airlines from Seattle to London?

Accepted Answer

Consider American Airlines (71%), Aer Lingus (71%) or Finnair (71%) when booking your flight. These represent the most reliable airlines when flying from Seattle to London.

Question 10

Can I find flights from Seattle to London for under $700 on Cheapflights?

Accepted Answer

Yes, there are multiple flights from Seattle to London for under $700. The cheapest flight booked recently is on SWISS for just $648, but on average you can expect to pay $700.

Question 11

Are there nonstop flights from Seattle to London for under $800 on Cheapflights?

Accepted Answer

Cheapflights has at least 20 direct flights from Seattle to London under $800. A good price for a nonstop flight from Seattle to London is less than $785.

Question 12

Are there last-minute flights available from Seattle to London for under $800?

Accepted Answer

There are currently 20+ open flights from Seattle to London within the next 7 days for less than $800.

Question 13

Where are the most common layover locations when flying from Seattle to London?

Accepted Answer

The most popular layover on flights from Seattle to London is Reykjavik.

Question 14

Where are the least popular layover locations for Seattle to London flights?

Accepted Answer

Flights departing from Seattle and landing in London layover in Dublin least frequently.

Question 15

What are some popular things to do or see while on a layover in Reykjavik?

Accepted Answer

Reykjavik travelers tend to visit Hallgrímskirkja, Icelandic Phallological Museum, and Harpa more than anywhere else. Hallgrímskirkja, Icelandic Phallological Museum, and Harpa are located about 23.2 mi, 23.5 mi, and 23.3 mi, respectively from Reykjavik Keflavik Intl. Travelers in need of a car in Reykjavik can rent one for about $55 per day.

Question 16

What is the cheapest day to fly round-trip from Seattle to London?

Accepted Answer

Friday flights are found to be more expensive to fly from Seattle to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

Question 17

How far in advance should I book a flight from Seattle to London?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 8 days in advance, which can save you up to 55% on flights from Seattle to London compared to booking the week you need them. Waiting 8 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $646. For sooner than that we have options available in the next 3 days from $1,159.

Question 18

What is the cheapest month to fly from Seattle to London?

Accepted Answer

November is one of the best times of the year to fly to London from Seattle. Prices for November average $860 per person but you can even find prices for as low as $560. The most expensive prices can be found in the month of June. Opting for a November flight can save you 39% on your journey compared to booking in June

Question 19

When is the cheapest time to fly from Seattle to London (SEA - LON)?

Accepted Answer

One of the essential ways to save on airfare from Seattle to London 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 16% on airfare.

Question 20

What airport do you fly from for flights from Seattle to London?

Accepted Answer

If you book a flight to London from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 19 flights from Seattle/Tacoma Intl to London per day from 16 different airlines.

Question 21

Accepted Answer

Air Canada is one of the most popular airlines used for those traveling from Seattle to London. Flights on this route from Air Canada typically cost $982.93 RT, a price that is 73% cheaper than the average Seattle to London flight. The cheapest flight found was $637 RT. The most popular departure airport in Seattle when flying to London is Seattle/Tacoma Intl Airport. The most popular airport to fly into when visiting London is London Heathrow Airport. When flying from Seattle to London, Air Canada flights are 5% more popular than any other airline flying that same route.

Question 22

Accepted Answer

One of the most popular airlines traveling from Seattle to London is Delta. Flights from Delta traveling this route typically cost $1,262.70 RT. This price is typically 59% cheaper than other airlines that offer Seattle to London flights. When booking this route, the cheapest RT price found was $1,016. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to London. London Heathrow Airport is the most popular arrival airport in London. When flying from Seattle to London, Delta flights are 5% more popular than any other airline flying that same route.

Question 23

What does SEA to LHR mean?

Accepted Answer

SEA stands for Seattle/Tacoma Intl Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are other airports near this flight route and their unique identifiers/IATA codes.

Question 24

Can I find deals for flights from Seattle to London that include extra baggage allowance?

Accepted Answer

The amount of baggage you can bring on your Seattle to London 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.

Question 25

Can I find deals on flights from Seattle to London with specific airlines?

Accepted Answer

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

Question 26

Can I find deals for flights from Seattle to London that include hotel bookings?

Accepted Answer

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

Question 27

How can I find direct flights from Seattle to London?

Accepted Answer

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

Question 28

Can I find deals for business class flights from Seattle to London?

Accepted Answer

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

Question 29

Can I find deals for flights from Seattle to London that allow pets onboard?

Accepted Answer

Many airlines flying from Seattle to London 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.

Question 30

Can I find deals on last-minute flights from Seattle to London?

Accepted Answer

Yes, you can often find last-minute deals on Seattle to London 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.

Question 31

How does Cheapflights help users find flights from Seattle to London?

Accepted Answer

When you search for this flight from Seattle to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 32

Why should you use Cheapflights to find cheap flight tickets from Seattle to London?

Accepted Answer

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 Seattle to London.

Question 33

Can Cheapflights find flights from Seattle to London with no change fees?

Accepted Answer

Yes! Cheapflights helps users easily find flights from Seattle to London with no change fees.

Question 34

Can Cheapflights notify me if prices for flights from Seattle to London become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Seattle to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

Popular in	June
Cheapest in	November
Round-trip from	$643
One-way from	$411

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest$402	Average$702	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Icelandair	Cheapest$517	Average$716	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Aer Lingus	Cheapest$557	Average$808	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
Finnair	Cheapest$572	Average$943	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest$575	Average$921	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Iberia	Cheapest$582	Average$836	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air France	Cheapest$588	Average$877	FlexibilityNo cancel fee	On-time77%	Search Air France flights
American Airlines	Cheapest$598	Average$902	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	Cheapest$604	Average$902	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest$625	Average$914	FlexibilityNo cancel fee	On-time70%	Search British Airways flights

1%of flight departures	Early morningMidnight to 6 am
0%of flight departures	Morning6 am to noon
52%of flight departures	AfternoonNoon to 6 pm
47%of flight departures	Evening6 pm to midnight

Sunday	20daily flights
Monday	20daily flights
Tuesday	15daily flights
Wednesday	20daily flights
Thursday	20daily flights
Friday	20daily flights
Saturday	20daily flights

Cheap flights from Seattle (SEA) to London (LON) from $394

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 8/10. 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.

The best prices from Seattle/Tacoma Intl to London are usually found in November or January, booked 7 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Seattle to London

Popular in

Cheapest in

Round-trip from

One-way from

What is the cheapest day to fly round-trip from Seattle to London?

How far in advance should I book a flight from Seattle to London?

What is the cheapest month to fly from Seattle to London?

When is the cheapest time to fly from Seattle to London (SEA - LON)?

Cheap Air Canada flights from Seattle to London

Peruse some of the lowest-priced Air Canada flights we've found from Seattle to London. Deals update often to give you more flight options matching your criteria

Cheap Delta flights from Seattle to London

Some of the lowest-priced Delta flights we've found at this time heading from Seattle to London. Ensure the flight price, dates, time, and airline match your criteria before you book.

Cheap Seattle to London flights in May & June 2024

Find cheap flight options from Seattle to London specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on mayo 16, 2024.

These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.

Seattle to London 2024 flight deals

Discover exclusive flight deals for travel between Seattle and London in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated mayo 16, 2024.

These are some of the best deals we've found on flights to London in 2024 at this time. For more flight deals, be sure to check back very soon.

Non-stop flights to London from Seattle

Consider booking one of these non-stop flights heading from Seattle to London. If you're looking for other options for flights from Seattle to London, make sure to update the search form at the top of page.

Seattle to London flights leaving soon

Have a look at some of the last-minute flights available departing from Seattle to London. Users should examine the flight details to ensure there are no surprises.

One-way flights to London from Seattle

Some of the best available deals we've found on one-way flights from Seattle to London. Those seeking round-trip flights from Seattle to London should utilize the search form at the the top of the page.

Find flights from Seattle to London within your budget

When is the best time to book a flight from Seattle to London?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to London. Price data was last updated on May 10, 2024.

Booking 7 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to London. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

When is the cheapest time to fly from Seattle to London?

Use this chart to determine the cheapest time to fly round-trip from Seattle to London. Price data was last updated on May 12, 2024.

Average price of flights to London by month

Plan your trip from Seattle to London by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to London is currently $397 while a round-trip flight costs $709. Price data was last updated on May 12, 2024.

Temperature and rainfall in London by month

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

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated mayo 16, 2024.

See what other customers who have flown with Air Canada, Delta and British Airways from Seattle to London have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Seattle to London?

Can I find flights from Seattle to London for under $700 on Cheapflights?

Are there nonstop flights from Seattle to London for under $800 on Cheapflights?

Are there last-minute flights available from Seattle to London for under $800?

What are the cheapest airlines flying from Seattle to London round-trip?

What are the most popular routes from Seattle to London?

What are the most popular airlines that fly from Seattle to London?

What are the most reliable airlines from Seattle to London?

What are the cheapest flights from Seattle to London?

What does SEA to LHR mean?

Where are the most common layover locations when flying from Seattle to London?

What are some popular things to do or see while on a layover in Reykjavik?

Where are the least popular layover locations for Seattle to London flights?

Can I find deals for flights from Seattle to London that include extra baggage allowance?

Can I find deals on flights from Seattle to London with specific airlines?

Can I find deals for flights from Seattle to London that include hotel bookings?

How can I find direct flights from Seattle to London?

Can I find deals for business class flights from Seattle to London?

Can I find deals for flights from Seattle to London that allow pets onboard?

Can I find deals on last-minute flights from Seattle to London?

How recently were the Seattle to London flight deals updated?

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.

Fly from Seattle to London on these airlinesChoose from the following airlines for your flight from Seattle to London. Flights are based on user searches made on Cheapflights and were last updated on mayo 16, 2024.

Choose from the following airlines for your flight from Seattle to London. Flights are based on user searches made on Cheapflights and were last updated on mayo 16, 2024.

Top 10 airlines flying from Seattle to London

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Search flights from Seattle to London by cabin class

Find flights from Seattle to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Hourly flight availability from Seattle to London

Find hourly flight availability from Seattle to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 16, 2024.

Weekly flight availability from Seattle to London

Explore weekly flight availability from Seattle to London. 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 mayo 16, 2024.

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Choose from the following airlines for your flight from Seattle to London. Flights are based on user searches made on Cheapflights and were last updated on mayo 16, 2024.