| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min |  Icelandair |  | $621 | ||
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 2 Stopovers (SFO, FRA) AS1166, DE2097, LH0914 24h 35min | Return 05/23/25 1 Stopover (FRA) LH0923, DE2032 13h 35min |    Alaska Airlines, Condor, Lufthansa |  | $1,201 | ||
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | ? | $624 | |
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | $625 | ||
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | ? | $640 | |
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0681 12h 45min | Icelandair |  | ? | $647 | |
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | ? | $655 | |
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | $659 | ||
| Seattle-Tacoma London Heathrow | Outbound 04/26/25 1 Stopover (KEF) FI0682, FI0454 17h 20min | Return 05/23/25 1 Stopover (KEF) FI0451, FI0683 15h 35min | Icelandair |  | ? | $669 |
-
Find cheap flights -
Booking tips
- Flight Routes
- Flights to United Kingdom
- Flights to London
- Flights to London Heathrow
- Flights Seattle-Tacoma (SEA) London Heathrow (LHR)
Airline
- Icelandair
- Alaska Airlines
Flight type
- Return
Outbound departure month
- April 2025
Outbound weekday
- Saturday
Return departure month
- May 2025
Return weekday
- Friday
Change in
- Frankfurt-Main
- San Francisco International Airport, CA
- Reykjavik-Keflavik International
Tips and tricks to help you find cheap flights from Seattle Tacoma to London Heathrow
Favorite airline: Icelandair
The majority of passengers on the route Seattle-Tacoma – London Heathrow prefer to fly with Icelandair.
Icelandair
39 %
Virgin Atlantic
23 %
Air Canada
14 %
Direct flights are more expensive
Flights with a stopover are on average $138.00 cheaper than direct flights.
non stop flight
1 stop
2 stops
09h 20min
19h 55min
20h 00min
$601
$463
$1,060
Favourite connection: via Reykjavik-Keflavik
54 % of booked tickets on this route are for flights with a transfer in Reykjavik-Keflavik.
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
Flight information: Seattle-Tacoma - London Heathrow
| Roundtrip from | $620.37 |
|---|---|
| Flight duration | min. 09:20 / max. 09:30 |
| Return flight duration | min. 09:50/ max. 09:55 |
| Distance | 7710 km |
| Flights per week | 19 |
| Departure airport | Airport Seattle-Tacoma International Airport, WA (SEA) |
| Arrival airport | Airport London Heathrow (LHR) |
| Destination country | Flights to United Kingdom |
Alternative routes to United Kingdom
- Flight Seattle-Tacoma - London from $621
Alternative flights to London Heathrow
- Flight Los Angeles - London Heathrow from $611
- Flight Staunton, VA - London Heathrow from $1,071
- Flight Columbus - London Heathrow from $1,181
- Flight Las Vegas - London Heathrow from $763
- Flight Atlanta - London Heathrow from $815
- Flight Orlando - London Heathrow from $427
- Flight Washington DC - London Heathrow from $480
- Flight Austin - London Heathrow from $851
- Flight Minneapolis - London Heathrow from $768
- Flight Charlotte - London Heathrow from $683
Flight destinations with a similar price
- Flight London Heathrow - Colombo from $689
- Flight London Heathrow - Dusseldorf from $134
- Flight London Heathrow - Frankfurt from $137
- Flight London Heathrow - Amritsar from $717
- Flight London Heathrow - Amman from $263
- Flight London Heathrow - Ahmedabad from $544
- Flight London Heathrow - Abuja from $611
- Flight London Heathrow - Tangier from $201
- Flight London Heathrow - Erbil from $430
- Flight London Heathrow - Abu Dhabi from $310
Flight destinations with a similar price
- Flight Seattle-Tacoma - Washington-DC from $571
- Flight Seattle-Tacoma - Columbia from $565
- Flight Seattle-Tacoma - Dusseldorf from $672
- Flight Seattle-Tacoma - London from $621
- Flight Seattle-Tacoma - Hamburg from $682
- Flight Seattle-Tacoma - Stuttgart from $679
- Flight Seattle-Tacoma - Port of Spain from $589
- Flight Seattle-Tacoma - Amsterdam from $681
- Flight Seattle-Tacoma - Houston-Hobby from $635