Icelandair Cheap Flights from Seattle to Reykjavik

View €449 flight on Sat, 28 Mar 2026Opens in a new window
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Prices were available within the past 7 days and start at €449 for one-way flights and €369 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Sun, 1 Feb - Sat, 7 Feb
SEA
Seattle
KEF
Reykjavik
€369 Return, found 11 hours ago
€369
Return
found 11 hours ago
Select Icelandair flight, departing Sun, 1 Feb from Seattle to Reykjavik, returning Sat, 7 Feb, priced at €369 found 11 hours ago
Icelandair
Sun, 18 Jan - Tue, 27 Jan
SEA
Seattle
KEF
Reykjavik
€428 Return, found 4 days ago
€428
Return
found 4 days ago
Select Icelandair flight, departing Sun, 18 Jan from Seattle to Reykjavik, returning Tue, 27 Jan, priced at €428 found 4 days ago
Icelandair
Sat, 28 Feb - Thu, 5 Mar
SEA
Seattle
KEF
Reykjavik
€473 Return, found 3 days ago
€473
Return
found 3 days ago
Select Icelandair flight, departing Sat, 28 Feb from Seattle to Reykjavik, returning Thu, 5 Mar, priced at €473 found 3 days ago
Icelandair
Sun, 1 Mar - Thu, 5 Mar
SEA
Seattle
KEF
Reykjavik
€528 Return, found 3 days ago
€528
Return
found 3 days ago
Select Icelandair flight, departing Sun, 1 Mar from Seattle to Reykjavik, returning Thu, 5 Mar, priced at €528 found 3 days ago
Icelandair
Sat, 28 Mar - Fri, 3 Apr
SEA
Seattle
KEF
Reykjavik
€535 Return, found 4 days ago
€535
Return
found 4 days ago
Select Icelandair flight, departing Sat, 28 Mar from Seattle to Reykjavik, returning Fri, 3 Apr, priced at €535 found 4 days ago
Icelandair
Sat, 28 Mar - Fri, 3 Apr
SEA
Seattle
KEF
Reykjavik
€570 Return, found 4 days ago
€570
Return
found 4 days ago
Select Icelandair flight, departing Sat, 28 Mar from Seattle to Reykjavik, returning Fri, 3 Apr, priced at €570 found 4 days ago

Find the cheapest month to fly from Seattle (SEA) to Reykjavik (KEF)

October is typically the cheapest month to fly

From €333 - €774 per traveller.
Seattle to Reykjavik route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Keflavik Intl.
Airlines serving
British Airways, Icelandair
Popular airline
British Airways
Distance
5776 km
Average flight time
7 hours 40 mins

Frequently asked questions

How much is an Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Set the "Price (lowest to highest)" filter on Expedia to look for cheap Icelandair return flights from €369 from SEA to KEF. Affordable one-way fares from €449 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to KEF with Icelandair?
Icelandair flights to Reykjavik are often cheaper in the off-peak months of January and April. Whether you're after a return or one-way ticket, you could score a better deal then.
Does Icelandair fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Icelandair operates direct flights from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF), with 7 departures every week. Simply apply the "Nonstop" and "Airline" filters while searching on Expedia to show all direct Icelandair flights to KEF.
How long does it take to fly from SEA to KEF with Icelandair?
From takeoff to touchdown, a nonstop Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) typically takes 7h 40m.
What airports does Icelandair fly into in Reykjavik?
Icelandair flights from Seattle - Tacoma Intl. Airport (SEA) to Reykjavik land at Keflavik Intl. Airport (KEF). This is the main entry point here.
What kind of luggage can I take on an Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
With Icelandair, you can fly standard economy from SEA to KEF with a small personal item and 1 cabin bag. Your carry-on bag should be no bigger than 53 centimetres x 18 centimetres x 33 centimetres and weigh under 6 kgs (13 lbs). Going over these restrictions could lead to additional charges, so check your airline's latest policies before confirming your booking.
What type of plane does Icelandair fly from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
You'll likely board a Boeing 757-200 or a Boeing 737 MAX 8 when flying Icelandair from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF). However, keep in mind that a different aircraft may be assigned depending on operational demands.
Can I change or cancel my Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Changes are generally free within 24 hours of making a booking, but your airline may charge a fee after that. For further details about altering your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to change your itinerary without extra charges, apply the "Changes included" and "No cancel fee" filters when organising your next trip.

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