Cheap flights from Seattle to London from £251

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to London. You should not have trouble finding flights to London from Seattle/Tacoma Intl; the airport handles an average of 13 outbound flights to London per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Seattle airport to London. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

Airlines like Delta, KLM, and Turkish Airlines fly from Seattle to London in about 9h 45m. The time it takes to get you to your destination can typically vary by up to 27h 40m. The distance from Seattle to London is about 4783 mi. Both multi-stop and direct flights can be found to your destination and back.

Cheapflights users have booked flights from Seattle to London round-trip from £492. Other airlines that can offer you cheap pricing are British Airways, from £520, and Virgin Atlantic, from £578. Alaska Airlines is currently priced 27% below the average price you’ll pay for this route.

The cheapest airline one-way is Icelandair, with whom users have recently found tickets for as low as £127. However, be on the lookout for offers from Virgin Atlantic and British Airways, as they are both options that can get you from Seattle to London for a low price.

The most popular route from Seattle to London is Seattle/Tacoma Intl - London Heathrow. You may also consider Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London Stansted.

No one likes to see their flight delayed. When booking a flight from Seattle to London consider choosing Scandinavian Airlines (97%), KLM (96%) or SAUDIA (96%) as they are the most reliable in getting you off to your destination on time.

The cheapest flight price from Seattle to London is £243. On average you can expect to pay £643. The most popular route, (Seattle/Tacoma Intl - London Heathrow), can usually be booked for £416.

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

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

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.

Currently, January is the cheapest month in which you can book a flight from Seattle to London (average of £538). Flying from Seattle to London in June is currently the most expensive (average of £915). 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.