$476 Cheap Flights from Seattle to London

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Find The Best Dates To Fly from Seattle - Tacoma Intl. to Heathrow

Amazing SEA to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $660 round trip and $476 one way. Prices and availability subject to change. Additional terms may apply.

Flight Schedule for SEA to LHR

CarrierFlightDepart SEAArrive LHRSat
10/23
Sun
10/24
Mon
10/25
Tue
10/26
Wed
10/27
Thu
10/28
Fri
10/29
Stops
BA4806:20 pm11:40 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AA15607:35 pm00:50 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Best Heathrow Flight and Hotel Packages

Heathrow flight + hotel packages - economy flights

Best Western Mornington Hotel London Hyde Park
Best Western The Boltons
Batty Langley's
Canary Riverside Plaza Hotel
The Lanesborough, Oetker Collection
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FAQs about flights from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport (LHR)

Can I catch a flight from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow) right now?

For any present London Airport (LHR-Heathrow) travel advice and quarantine requirements, go to the Covid-19 Travel Advisor. Check before you arrange your flight, so you don't get caught up en route.

Are there direct flights from SEA to London Heathrow?

If you're hoping to journey from Sea-Tac Airport to London Heathrow as swiftly as possible, you'll be glad to know multiple airlines offer direct flights. Choose your preferred seat with British Airways or Virgin Atlantic.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to London Heathrow, please visit our Customer Service Portal.

How long is the flight from SEA to LHR?

Taking approximately 9 hours and 24 minutes all up, getting from Sea-Tac Airport to Heathrow Airport is no walk in the park. On such a long flight, it's a good idea to get up and stretch your legs often.

What is the flight distance from Sea-Tac Airport to LHR?

The flight distance from SEA to Heathrow Airport is 4,785 mi. Apart from cramming your devices with more must-see TV shows, it'll be wise to carry some noise-canceling earbuds and a pullover as well.

What airlines fly from Seattle - Tacoma Intl. Airport (SEA) to London Airport (LHR-Heathrow)?

If you'd prefer to fly direct from SEA to Heathrow Airport (LHR), you've got quite a few options. Below are the top airlines that service this route:

  • British Airways - (BA) with 23 flights every month
  • Virgin Atlantic - (VS) with 65 flights every month
  • American Airlines - (AA) with 43 flights every month
  • Delta - (DL) with 73 flights every month
What airlines have practices regarding COVID-19 in place and use social distancing?

From the moment you enter the departure terminal to when you leave the arrivals terminal, if you're flying with British Airways, Virgin Atlantic or Aer Lingus you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.

Seattle - Tacoma Intl. to Heathrow Flight FAQ

Traveling From Seattle - Tacoma Intl.
Traveling To Heathrow
Shortest Flight Time 25 hours 15 mins
Earliest Departure Time 6:20PM BST
Latest Departure Time 7:35PM BST
Lowest Flight Price $660

Route Info

Flight path for flights from Seattle-Tacoma International Airport to London Heathrow Airport

Distance:
5,889.00 miles

Airlines & Aircraft Used on SEA to LHR Flight Routes

Airline Carrier
Aircraft
Jet Airways (India)
Aerospatiale/Alenia ATR 42/ ATR 72
Jet Airways (India)
Boeing 777-300 pax
United Airlines
Antonov AN-24

Discover our best flights from Seattle SEA to London LHR. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Seattle SEA to London LHR at the right price  

Airfares to London LHR from Seattle SEA currently cost between $660 and $805. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Seattle SEA to London LHR 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Seattle SEA to London LHR on Travelocity starting at $476. Prices and availability subject to change. Additional terms may apply. 

 

Get to London LHR from Seattle SEA quicker with direct flights. 

Get to London faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to LHR from SEA to take around 25 hour(s) 15 min(s).  

 

Find our cheapest airfares for flights from Seattle SEA to London LHR

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to LHR from SEA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Seattle SEA to London LHR today 

If you’re flexible about when you travel, January is usually the cheapest month to fly from Seattle SEA to London LHR. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to London LHR from Seattle SEA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to LHR from SEA have this option.  

 

Travel with confidence when you book flights to London LHR from Seattle SEA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.