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Fares from $345 One Way, $436 Round Trip from Seattle to London

Prices starting at $436 for return flights and $345 for one-way flights to London were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

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More About Flying To London from Seattle

Flights from Seattle to London - Frequently Asked Questions

rop="name">Flights from Seattle to London - Frequently Asked Questions
Are there non-stop flights from Seattle to London?

There are, which is terrific news if you're not a big fan of swapping planes en route. Virgin Atlantic and British Airways operate nonstop flights from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow).

What is the shortest flight from Seattle to London?

It's a considerable distance between Seattle and London — 9 hours and 20 minutes at least. But your time on board doesn't have to be torturous. Be prepared and bring all the basics like some toiletries and a travel pillow.

What airlines fly from Seattle to London most frequently?

The carriers that offer the most frequent flights between Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) and London Airport (LHR-Heathrow) include Virgin Atlantic (VS). This well-known option operates 47 flights on the route every month. Also look into the great fares available with British Airways (BA). Offering 40 monthly flights between Seattle and London, they'll ensure your journey is just as enjoyable as the destination.

Route Information for Flights from Seattle to London

Origin Airport IATA CodeSEA
Destination Airport IATA CodeLON
Direct Flight Airlines
Earliest Flight Arrival
Latest Flight Arrival

Flights Review

Feb 18, 2020

Onboard staff was the best

May 24, 2019

Seats are WAY too close together. Could hardly move. Great staff except the seats were so uncomfortable will consider flying another airline instead next time

Dec 27, 2018

Well we flew on a replacment A330 vrs a 787 as planned, but we arrived in one piece, but not exactly as comfortable & the entertainment was 2nd rate, I pad we'e passed out to everyone.

Dec 8, 2018

I enjoyed my flight im pregnant and they took good care off me with a extra water botlle and a snack they where super friendly God bless

Dec 1, 2018

The seats were very thin with zero padding. I felt the foot of guy behind me under my seat

Nov 2, 2018

Premium class was very comfortable.

Oct 24, 2018

The most friendly and professional airline staff I have encountered in my years of travel.

Oct 12, 2018

Airline seats are getting smaller but people are not so that is always an issue

Oct 7, 2018

Seats were too close together and too small. Uncomfortable for a long flight.

Aug 5, 2018

Great price and flight times

Travel from Seattle to London

International flights from Seattle to London are popular with business and vacation travelers alike. As the capital of England and the United Kingdom, London is a leading international power in cultural, financial, and tourist affairs. Look for great deals on flights to London on

Seattle, Washington

Seattle is the largest seaport in the Pacific Northwest, with over 3.4 million people calling it home. Seattle is known for its thriving music scene, wet winters, and unique skyline due largely to the Space Needle. Seattle is served by Sea-Tac Airport.

Sea-Tac Airport is located about 14 miles south of downtown Seattle off Interstate 5. Travelers can easily reach the airport from downtown Seattle by taxi or the Central Link light rail. Rail service runs from 5 a.m. to 1 a.m. Mondays through Saturdays and 6 a.m. through midnight on Sundays. Parking is available at the airport for travelers who choose to drive their own vehicles. General parking rates are $3 per hour or $28 per day, and it takes approximately 20 minutes to drive from downtown to the airport.

More than 20 airlines serve Sea-Tac with regularly scheduled domestic and international flights, including nonstop flights to London aboard American Airlines, British Airways, and Iberia Airlines. Sea-Tac Airport has more than 35 dining locations for passengers who want to relax with a drink or a meal before departing. Some options include Tully's Coffee, Wolfgang Puck Express, and The Great American Bagel Bakery.


Located in southern England, London is one of the busiest cities in the world, with enough rich history to amaze anyone. With royal palaces, famous towers, and modern architecture, the buildings of London are a diverse assortment; with over 26 million visitors each year, the people walking its streets are just as varied.

Experience London

Five major airports offer London visitors a variety of arrival destinations. London City Airport, Stansted Airport, London Luton Airport, Gatwick Airport, and Heathrow Airport all serve the London area with passenger flights. Train service is available from each airport into the downtown area, although travelers arriving at Luton Airport will need to take an 8-minute shuttle ride to the station. Queued taxis and rental vehicles are available at all five airports to take you to your final destination.

Visitors to London can expect rain and humidity during much of the year; the average humidity is over 90 percent. Summers in London are warm, with average high temperatures in the 70s during June, July, and August, making summer a pleasant time to visit. Winters are long, and average lows stay in the 30s from December through March.

Historical and awe-inspiring churches in London include St. Paul's Cathedral and Westminster Abbey, where many of England's kings are laid to rest. The National Gallery houses famous paintings including works by Van Gogh and Botticelli. Other famous attractions include Buckingham Palace, the Tower of London, and Big Ben.

Give Yourself the Royal Treatment

With many flights traveling from Seattle to London each day, it is easy to plan a vacation in England's royal city. Start preparing for your vacation when you make your travel arrangements on, where you can reserve flights, hotel accommodations, and rental cars all in one place.

^Savings based on all package bookings with Flight + Hotel made on from January 1, 2019 to December 31, 2019 as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.