
Popular airlines from Heathrow Airport (LHR) to Seattle-Tacoma International Airport (SEA)
- Air Canada
Air Canada
- Delta
Delta
- KLM
KLM
- Virgin Atlantic
Virgin Atlantic
- Air France
Air France
- Brussels Airlines
Brussels Airlines
- Aer Lingus
Aer Lingus
- Plan, book, fly with confidence
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Cheap flights from London to Seattle (LHR-SEA)
Prices were available within the past 7 days and start at €499 for one-way flights and €507 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
€507 Return, found 2 hours ago
€507
Return
found 2 hours ago

Thu, 9 Oct - Sun, 19 Oct
LHR
London
SEA
Seattle
€516 Return, found 5 days ago
€516
Return
found 5 days ago

Sun, 30 Nov - Sat, 6 Dec
LHR
London
SEA
Seattle
€571 Return, found 5 days ago
€571
Return
found 5 days ago

Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
€573 Return, found 2 hours ago
€573
Return
found 2 hours ago

Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
€580 Return, found 2 hours ago
€580
Return
found 2 hours ago

Sun, 30 Nov - Sat, 6 Dec
LHR
London
SEA
Seattle
€580 Return, found 5 days ago
€580
Return
found 5 days ago

Sun, 30 Nov - Sat, 6 Dec
LHR
London
SEA
Seattle
€581 Return, found 5 days ago
€581
Return
found 5 days ago

Mon, 1 Sep - Tue, 16 Sep
LHR
London
SEA
Seattle
€588 Return, found 20 hours ago
€588
Return
found 20 hours ago

Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
€609 Return, found 2 hours ago
€609
Return
found 2 hours ago

Mon, 1 Sep - Mon, 15 Sep
LHR
London
SEA
Seattle
€629 Return, found 2 hours ago
€629
Return
found 2 hours ago
Find the cheapest month to fly from London (LHR) to Seattle (SEA)
February is typically the cheapest month to fly
From €418 - €833 per traveller.
Graph displaying average flight prices per month
Origin airport | Heathrow |
Destination airport | Seattle - Tacoma Intl. |
Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Scandinavian Airlines, Turkish Airlines, United, Virgin Atlantic, WestJet |
Return price | €506 |
Distance | 7657 km |
Perfect flights from London to Seattle
Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to Seattle. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
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Our flexible Heathrow to Seattle - Tacoma Intl. ticket options cater to your travel preferences, with incredible one-way fares from €499 and roundtrip prices from €507. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
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Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Seattle.
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