S$571 Cheap Flights from London to Seattle
Popular airlines from Heathrow Airport (LHR) to Seattle-Tacoma International Airport (SEA)
FinnairFinnair
Alaska AirlinesAlaska Airlines
Aer LingusAer Lingus
British AirwaysBritish Airways
IberiaIberia
LufthansaLufthansa
Air CanadaAir Canada
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Cheap Flights from London to Seattle (LHR-SEA)
Alternative airports near Seattle
Prices were available within the past 7 days. Prices and availability are subject to change.
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Flights from London to Seattle
When looking for plane tickets from London to Seattle, the ease and convenience of using Expedia simply can’t be beat. With tons of departure points and flights options from the top airline carriers, Expedia gives you the widest array of cheap flights to Seattle. Look for LHR to SEA airfare with the assurance that you have the largest online travel agency working for you.
Expedia lets you search across the largest number of airlines and Seattle flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your London Seattle flight!
Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your London to Seattle trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.
Combine your Seattle flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from London to Seattle with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!
Frequently Asked Questions
How much is a flight from Heathrow Airport to Sea-Tac Airport?
Start packing your bags, because round-trip journeys from LHR to Seattle - Tacoma Intl. Airport (SEA) start from S$744. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to secure the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Heathrow Airport (LHR) to Sea-Tac Airport?
Most flights can be cancelled online, but whether you incur a fee depends on your airline. If you do have to cancel your trip, follow the instructions in the Customer Service Portal.
How do I find cheap flights from Heathrow Airport to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to Sea-Tac Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Seattle - Tacoma Intl. Airport (SEA)?
With around 7,700 kilometres separating LHR and Seattle - Tacoma Intl. Airport (SEA), your flight will be a long one. Pack wisely to make your time on board more comfortable. Little things like an extra pair of socks and a good neck pillow can make a big difference.
Which airlines fly direct from Heathrow Airport to Sea-Tac Airport?
Getting from London Heathrow to Sea-Tac Airport is easy when you have a good range of airlines to choose from. Here are a few of the best:
- Virgin Atlantic - (VS) with 30 monthly flights
- American Airlines - (AA) with 30 monthly flights
- British Airways - (BA) with 30 monthly flights
- Delta Air Lines - (DL) with 17 monthly flights
Are Heathrow Airport to Sea-Tac Airport flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some of the cheapest airfares from London Heathrow to SEA surfacing a few weeks before the departure date. If you'd rather book ahead, Expedia compares and updates all the best flight deals continuously — as early as a year in advance in some cases. It depends on the carrier though, as not all airlines advertise prices that far in advance.
Travel information
Origin airport | Heathrow Airport |
|---|---|
Destination airport | Seattle-Tacoma International Airport |
Distance | 7,702 km away |
Airlines serving | Finnair, Alaska Airlines, Aer Lingus, British Airways, Iberia, Lufthansa, Air Canada, Air France, KLM, Virgin Atlantic, Icelandair, Austrian Airlines, Brussels Airlines, WestJet, JetBlue Airways, SAS, Turkish Airlines, Delta, American Airlines, United, Aeromexico, Swiss International Air Lines |
Popular airline | Finnair |
Return price | S$744 |
Average flight time | 10 hours 4 mins |