SEA - LON Price | $759 - $1,174 |
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LON Temperature | 39.2 - 62.6 °F |
LON Rainfall | 1.6 - 2.8 inches |
Popular in | July | High demand for flights, 20% potential price rise |
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Cheapest in | January | Best time to find cheap flights, 19% potential price drop |
Round-trip from | $759 | From Seattle/Tacoma Intl to London (LON) |
One-way from | $359 | One-way flight from Seattle/Tacoma Intl to London (LON) |
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.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 29 days in advance, which can save you up to 46% on flights from Seattle to London compared to booking the week you need them. Waiting 29 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 $1,186. For sooner than that we have options available in the next 3 days from $1,565.
January is one of the best times of the year to fly to London from Seattle. Prices for January average $936 per person but you can even find prices for as low as $573. The most expensive prices can be found in the month of July. Opting for a January flight can save you 25% on your journey compared to booking in July
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 at noon could potentially save you up to 11% on airfare.
One of the most popular airlines traveling from Seattle to London is Icelandair. Seattle to London flights are typically 56% cheaper than other airlines traveling the same route. Flights from Icelandair typically cost $963.35 RT. The cheapest Icelandair flight found for this route was $648. 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, Icelandair flights are 7% more popular than any other airline flying that same route.
One of the most popular airlines traveling from Seattle to London is Delta. Flights from Delta traveling this route typically cost $1,078.54 RT. This price is typically 54% cheaper than other airlines that offer Seattle to London flights. When booking this route, the cheapest RT price found was $666. 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.
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Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
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Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
Entertainment
Comfort
Crew
Overall
Food
Boarding
Reviews
Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
Entertainment
Comfort
Crew
Overall
Food
Boarding
Reviews
Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
Entertainment
Comfort
Crew
Overall
Food
Boarding
Reviews
Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
Entertainment
Comfort
Crew
Overall
Food
Boarding
Reviews
Had to abort landing and fly around to land again because there was a corporate jet still taxiing on the runway, but I can’t hold that against them, glad we made it safe! Flight attendants were really great!
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 15 flights from Seattle/Tacoma Intl to London per day from 21 different airlines.
British Airways, Virgin Atlantic, and Icelandair are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.
Yes, there are multiple flights from Seattle to London for under $600. The cheapest flight booked recently is on British Airways for just $536, but on average you can expect to pay $552.
Cheapflights has at least 20 direct flights from Seattle to London under $600. A good price for a nonstop flight from Seattle to London is less than $594.
There are currently 20+ open flights from Seattle to London within the next 7 days for less than $700.
Days when nonstop flights are available for this flight are: Thursday.
Travelers can expect 3 flights from Seattle to London on average per day.
Evening (6pm - Midnight) - 100% of flight departures
A quick flight from Seattle to London can take about 9h 22m. British Airways provides one of the quickest options available for as low as $536. The distance between Seattle and London is about 4812 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
Cheapflights users have booked flights from Seattle to London round-trip from $536. Other airlines that can offer you cheap pricing are Icelandair, from $538, and Finnair, from $553. Users have found that British Airways is 42% cheaper than the other options available to this destination.
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.
Before booking your flight from Seattle to London check out the most popular airlines for this route: American Airlines, Air Canada or Air France.
Consider Alaska Airlines (77%), Air France (70%) or Delta (70%) when booking your flight. These represent the most reliable airlines when flying from Seattle to London.
Looking at all options, your cheapest flight can be booked for $545. While the most popular route (Seattle/Tacoma Intl - London Heathrow) can be booked for $536 on average our data indicates $3,400 when flying from Seattle to London.
1%of flight departures | Early morningMidnight to 6 am |
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0%of flight departures | Morning6 am to noon |
58%of flight departures | AfternoonNoon to 6 pm |
41%of flight departures | Evening6 pm to midnight |
Sunday | 20daily flights |
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Monday | 14daily flights |
Tuesday | 16daily flights |
Wednesday | 14daily flights |
Thursday | 16daily flights |
Friday | 13daily flights |
Saturday | 16daily flights |