Flight deals we found
Featured airlines
- Be in the knowGet alerts if flight prices drop or rise*
- Book smarterSave up to 30% on select hotels after you book a flight*
Cheap Flights from Seattle to London (SEA-LHR)
Prices were available within the past 7 days and start at $263 for one-way flights and $537 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.
Origin airport | Seattle - Tacoma Intl. |
Destination airport | Heathrow |
Airlines serving | Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, KLM, Lufthansa, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet |
Roundtrip price | $544 |
Distance | 4786 mi |
Average flight time | 17 hours 25 mins |
Seattle to London Flights
Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.
Bagging a cheap flight from Seattle to London may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.
With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from SEA to LHR today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of London are only a plane trip away. Book your travel arrangements with us today!
If you would like to book flights to London more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to London is $263 now!
Frequently asked questions
- Trending Routes
- Trending Flights
- Top Flights Destinations
- More Popular Airlines
- Nearby Airports
- Flights From Other Airports
- Expedia's Latest Trends
Top Routes from Seattle
- Seattle to Chicago (SEA - ORD)
- Seattle to Phoenix (SEA - PHX)
- Seattle to Newark (SEA - EWR)
- Seattle to San Diego (SEA - SAN)
- Seattle to Los Angeles (SEA - LAX)
- Seattle to Honolulu (SEA - HNL)
- Seattle to Orange County (SEA - SNA)
- Seattle to Boston (SEA - BOS)
- Seattle to Denver (SEA - DEN)
- Seattle to Puerto Vallarta (SEA - PVR)
- Seattle to New York (SEA - JFK)
- Seattle to Dallas (SEA - DAL)
Top Routes to London
- Chicago to London (ORD - LHR)
- Newark to London (EWR - LHR)
- San Diego to London (SAN - LHR)
- Los Angeles to London (LAX - LHR)
- Washington to London (DCA - LHR)
- Miami to London (MIA - LHR)
- Boston to London (BOS - LHR)
- Fort Lauderdale to London (FLL - LHR)
- New York to London (LGA - LHR)
- Denver to London (DEN - LHR)
- Washington to London (IAD - LHR)
- New York to London (JFK - LHR)
Top Routes from Seattle
- Alaska Airlines Seattle to Chicago
- Alaska Airlines Seattle to Phoenix
- Alaska Airlines Seattle to Newark
- Alaska Airlines Seattle to San Diego
- Alaska Airlines Seattle to Los Angeles
- Alaska Airlines Seattle to Honolulu
- Alaska Airlines Seattle to Orange County
- Alaska Airlines Seattle to Boston
- Alaska Airlines Seattle to Denver
- Aeromexico Seattle to Puerto Vallarta
Top Routes to London
- British Airways Chicago to London
- British Airways Newark to London
- British Airways Los Angeles to London
- British Airways Miami to London
- British Airways Boston to London
- British Airways Denver to London
- British Airways Washington to London
- British Airways New York to London
- British Airways Houston to London
- British Airways Dallas to London
Top Flight Destinations
- Flights to London
- Flights to Edinburgh
- Flights to Manchester
- Flights to Liverpool
- Flights to Glasgow
- Flights to York
- Flights to Birmingham
- Flights to Bath
- Flights to Brighton
- Flights to Blackpool
- Flights to Bristol
- Flights to Belfast
- Flights to Cardiff
- Flights to Newcastle-upon-Tyne
- Flights to Inverness
- Flights to Southampton
- Flights to Leeds
- Flights to Oxford
- Flights to Bournemouth
- Flights to Windermere
London
Seattle Paine Field Intl. Airport
Nearby Airports
- Boeing Field Airport (BFI)
- Seattle Paine Field Intl. Airport Airport (PAE)
- William R. Fairchild Intl. Airport (CLM)
- Lopez Island Airport (LPS)
- Friday Harbor Airport (FRD)
- Friday Harbor Sea Plane Base Airport (FBS)
- Bowerman Airport (HQM)
- Rosario Seaplane Base Airport (RSJ)
- Westsound Airport (WSX)
- Roche Harbor Airport (RCE)