
Popular airlines from Seattle-Tacoma International Airport (SEA) to Heathrow Airport (LHR)
- British Airways
British Airways
- Finnair
Finnair
- Aer Lingus
Aer Lingus
- Virgin Atlantic
Virgin Atlantic
- Iberia
Iberia
- Air Canada
Air Canada
- Icelandair
Icelandair
- Plan, book, fly with confidence
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Cheap Flights from Seattle to London (SEA-LHR)
Prices were available within the past 7 days and start at ₩428,300 for one-way flights and ₩744,200 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.










Find the cheapest month to fly from Seattle (SEA) to London (LHR)
October is typically the cheapest month to fly
Graph displaying average flight prices per month
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Heathrow |
Airlines serving | Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Turkish Airlines, United, WestJet |
Roundtrip price | ₩744,200 |
Distance | 7657 km |
Average flight time | 17 hours 33 mins |
Seattle to London Flights
Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Seattle to London will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring London.
Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LHR with hotels and car rentals to score even bigger savings.
All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.
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Top Routes from Seattle
- Seattle to Chicago (SEA - ORD)
- Seattle to Newark Liberty Intl. Airport (SEA - EWR)
- Seattle to Los Angeles (SEA - LAX)
- Seattle to Bangkok (SEA - BKK)
- Seattle to Portland (SEA - PDX)
- Seattle to Detroit (SEA - DTW)
- Seattle to Honolulu (SEA - HNL)
- Seattle to Paris (SEA - CDG)
- Seattle to Charlotte (SEA - CLT)
- Seattle to Denver (SEA - DEN)
- Seattle to Hanoi (SEA - HAN)
- Seattle to Vancouver (SEA - YVR)
Top Routes to London
- Newark Liberty Intl. Airport to London (EWR - LHR)
- Hong Kong to London (HKG - LHR)
- Paris to London (CDG - LHR)
- Boston to London (BOS - LHR)
- Seoul to London (GMP - LHR)
- Edinburgh to London (EDI - LHR)
- Washington to London (IAD - LHR)
- New York to London (JFK - LHR)
- Busan to London (PUS - LHR)
- Tokyo to London (NRT - LHR)
- Frankfurt to London (FRA - LHR)
- Seoul to London (ICN - LHR)
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