Flight Routes from Seattle Tacoma to London

Compare cheap outbound and return flights from Seattle-Tacoma (SEA) to London (LON) and find the best offer from numerous airlines and travel agencies.

Trip type
Fastest flight
non-stop flights
19x / week
Flight distance
7,721 km
Time difference
Airports in London
  1. Heathrow
  2. Gatwick
  3. City Airport
  4. Stansted
  5. Luton
  6. Southend

Flight schedule from Seattle-Tacoma (SEA) to London (LON)

Select a travel date in the flight schedule for the route from Seattle-Tacoma (SEA) to London (LON) and compare affordable flight deals.

offers
Active filtersnone
Matching outbound flights9 of 9
fromto
dep.arr.
durationstopovers
  1. September 6 – 12, 2026
  2. September 13 – 19, 2026
  3. September 20 – 26, 2026
    1. SEALHR
      nonstop
      1. British Airways
    2. SEALHR
      nonstop
      1. Virgin Atlantic Airways
    3. SEALHR
      1 stopover
      1. Icelandair
    4. SEALHR
      nonstop
      1. Virgin Atlantic Airways
    5. SEALHR
      nonstop
      1. British Airways
    6. SEALHR
      nonstop
      1. Alaska Airlines
    7. SEALHR
      nonstop
      1. Alaska Airlines
    8. SEALHR
      nonstop
      1. Delta Air Lines
    9. SEALHR
      1 stopover
      1. United Airlines

      Tips and tricks to help you find cheap flights from Seattle Tacoma to London

      Favorite airline: Icelandair
      76 % of flights booked on the route from Seattle-Tacoma to London are booked with Icelandair, Virgin Atlantic and Air Canada.
      Icelandair
      39 %
      Virgin Atlantic
      23 %
      Air Canada
      14 %
      Direct flights are more expensive
      Direct flights on this route are $138.00 more expensive on average than flights with a stopover.
      non stop flight
      1 stop
      2 stops
      09h 20min
      19h 55min
      20h 00min
      $601
      $463
      $1,060
      Favourite connection: via Reykjavik-Keflavik
      The most popular route is via Reykjavik-Keflavik and is booked by 54 % of all travelers.
      Route
      bookings
      1 stopover Reykjavik-Keflavik International
      19h 55min, from $463
      54 %
      Direct flights
      09h 20min, from $601
      22 %
      1 stopover Dublin
      13h 45min, from $600
      10 %

      Important flight information

      Discover more flights around Seattle-Tacoma and London

      Departure airport Airport Seattle-Tacoma International Airport, WA (SEA)
      Arrival airport Airport London, all Airports (LON)
      Destination country Flights to United Kingdom
      Departure airport - Destination country Seattle-Tacoma International Airport, WA - United Kingdom
      Alternative flights to London
      Flight destinations with a similar price