Reykjavik (KEF) to Seattle (SEA) flights
2 airlines fly nonstop from Reykjavik (KEF) to Seattle (SEA): Alaska Airlines and Icelandair. The two airports are 3,610 miles (5,810 km) apart. Alaska Airlines is in oneworld. There are also 29 ways to fly it with one stop, through Edmonton, Calgary and Vancouver and more.
Airlines flying nonstop from KEF to SEA
- Alaska Airlinesoneworld · bookable with 9 programsWho books it
- IcelandairNot in an alliance · bookable with 3 programsWho books it
Book KEF to SEA with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Alaska Atmos RewardsBooks Alaska Airlines, Icelandair
- American AAdvantageBooks Alaska Airlines
- British Airways ClubBooks Alaska Airlines
- Cathay Pacific Asia MilesBooks Alaska Airlines
- Emirates SkywardsBooks Icelandair
- Finnair PlusBooks Alaska Airlines
- Iberia ClubBooks Alaska Airlines
- JAL Mileage BankBooks Alaska Airlines
- JetBlue TrueBlueBooks Icelandair
- Qantas Frequent FlyerBooks Alaska Airlines
- Qatar Airways Privilege ClubBooks Alaska Airlines
KEF to SEA with one stop
29 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Edmonton (YEG)WestJet, then Alaska Airlines
- Via Calgary (YYC)WestJet the whole way
- Via Vancouver (YVR)Icelandair, then Air Canada, Alaska Airlines and 1 more
- Via Portland (PDX)Icelandair, then Alaska Airlines and Delta Air Lines
- Via Minneapolis (MSP)Delta Air Lines the whole way
- Via Denver (DEN)Icelandair, then Alaska Airlines, Delta Air Lines and 4 more+3
- Via Montreal (YUL)Air Canada the whole way
- Via Toronto (YYZ)Air Canada the whole way
- Via Chicago (ORD)United Airlines the whole way
+1 - Via Detroit (DTW)Delta Air Lines the whole way
- Via Boston (BOS)Icelandair, then Alaska Airlines, JetBlue Airways and 1 more
- Via Pittsburgh (PIT)Icelandair, then Alaska Airlines and American Airlines
- Via New York (EWR)United Airlines the whole way
- Via New York (JFK)Delta Air Lines the whole way
- Via Philadelphia (PHL)American Airlines the whole way
KEF to SEA: common questions
Which airlines fly nonstop from KEF to SEA?
Alaska Airlines (oneworld) and Icelandair fly nonstop from Reykjavik (KEF) to Seattle (SEA).
How far is Reykjavik from Seattle by plane?
Reykjavik (KEF) and Seattle (SEA) are 3,610 miles (5,810 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book KEF to SEA award flights?
11 programs can book at least one of the nonstop airlines: Alaska Atmos Rewards, American AAdvantage, British Airways Club, Cathay Pacific Asia Miles, Emirates Skywards, Finnair Plus, Iberia Club, JAL Mileage Bank and 3 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does KEF to SEA cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for KEF to SEA with taxes and fees.
Where can I connect between Reykjavik and Seattle?
The most direct connections are through Edmonton (YEG), Calgary (YYC), Vancouver (YVR), Portland (PDX) and Minneapolis (MSP). On 14 of them the same airline flies both flights, for example WestJet through Calgary.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.