SEA to LHR (Seattle to London) Flights

Last Minute Flights from SEA to LHR

Best airfare and ticket deals for SEA to LHR flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
SEALondonApril 21 to May 7$640
*Prices include taxes and fees

Cheapest SEA to LHR Flights

Best airfare and ticket deals for SEA to LHR flights are based on recent deals found by Expedia.com customers within the past 7 days.

OriginDestinationTravel DatesFlights From*
SEALondonOctober 23 to November 5$537
SEALondonOctober 8 to October 17$544
SEALondonOctober 23 to November 5$544
PAELondonOctober 2 to October 16$755
*Prices include taxes and fees
SEA to LHR Flight Details
Origin airport
Seattle - Tacoma Intl.
Origin airport IATA code
SEA
Destination airport
Heathrow
Destination airport IATA code
LHR
Distance
4786 mi

Frequently asked questions

Which airlines with flights from Sea-Tac Airport to London Airport (LHR-Heathrow) allow free cancellation due to COVID-19?
To locate the airlines that allow COVID-19 related changes, simply use our filter tool. Get started by typing in your travel dates. Then, once all the available flights are in front of you, check the “No change fee” box underneath “Flexible change policies” on the left. Read through the airline’s cancellation rules before finalizing your Sea-Tac Airport to London Heathrow ticket.
What airlines fly direct from SEA to London Airport (LHR-Heathrow)?
Forget about swapping planes and stopovers. Enjoy a stress-free trip from SEA to London Airport (LHR-Heathrow) with one of these popular airlines:
  • Virgin Atlantic (VS)
  • American Airlines (AA)
  • British Airways (BA)
  • Delta (DL)
How many flights are there from SEA to LHR?
There are about 3 flights every day from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow), so you have no shortage of ways to get to London. Just pick out a date and time that matches your schedule and lock in your fare.
How long does it take to fly from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow)?
Put some thought into where you’d rather sit, because the Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow) route takes roughly 9 hours and 28 minutes. Aisle or window seats, the exit row and seats near the front are generally considered to be great spots.
What is the flight distance from Seattle, WA Airport (SEA-Seattle - Tacoma Intl.) to London Airport (LHR-Heathrow)?
You’ll cover around 4800 miles (7700 km) on the popular route from Seattle to London. From toiletries to a refillable water bottle, put together a list of things to bring on board to make your long-haul flight more comfortable.
How many afternoon flights are there from SEA to LHR?
There are 22 afternoon and evening flights from SEA to LHR per week. American Airlines (AA) lists 7 weekly services after midday. With the earliest one taxiing down the runway at 2:05AM, you’ll have time to check out the gift shops.
What is the earliest departure time out of Seattle to London?
Don’t fret about sleeping in — the first flight leaves SEA at 3:00PM. 12:25AM is the scheduled time of landing at LHR.
What is the latest departure time out of Seattle to London?
The latest flight leaves the runway at SEA at 7:15PM and arrives at 4:50AM at LHR. You’ll have adequate time to prepare for this trip.
What is the average price from Seattle to London?
On average, the best price for a round-trip airfare from SEA to LHR is $537. Walk away with your own great bargain by booking your seats soon. This price was available on Flights.com within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Seattle to London Flight Schedule

CarrierFlightDepart SEAArrive LHRFri
4/19		Sat
4/20		Sun
4/21		Mon
4/22		Tue
4/23		Wed
4/24		Thu
4/25		Stops
BA5201:30 pm06:50 amCheck Fare
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0 Stops
VS10604:30 pm09:50 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
DL2007:30 pm01:15 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
BA4807:40 pm01:00 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Seattle to London Flights

Whether it’s for an obligation or the sake of your sanity, sometimes you need to get away. Maybe you need flights from Seattle to London to attend your cousin’s wedding, to pitch a business idea to your boss, or perhaps simply to treat yourself to a mini vacation. Regardless of the reasons behind packing your bags and needing to find the cheapest flights from SEA to LHR, we’ve got you covered here at Flights.com.

We present you with some of the hottest deals on airfare so stop that Google flights search. We want you to spend less on your flight from Seattle to London, so you can spend more during your getaway. With Flights.com, you’ll find it simple to land airline tickets with itineraries matching your travel schedule. What’s more, we provide you with all the information you need to confidently make reservations on your family, business, or personal trip.