Cheap Flights From Seattle - Tacoma Intl. (SEA) To Keflavik Intl. (KEF)

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Cheapest Flights from Seattle (SEA) to Reykjavik (KEF)

The cheapest flights to Keflavik Intl. found within the past 7 days were CA $660 round trip and CA $573 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Apr 15 - Wed, Apr 22
SEA
Seattle
KEF
Reykjavik
CA $660 Roundtrip, found 1 day ago
CA $660
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Wed, Apr 15 from Seattle to Reykjavik, returning Wed, Apr 22, priced at CA $660 found 1 day ago
Wed, Apr 29 - Tue, May 5
SEA
Seattle
KEF
Reykjavik
CA $677 Roundtrip, found 4 days ago
CA $677
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Wed, Apr 29 from Seattle to Reykjavik, returning Tue, May 5, priced at CA $677 found 4 days ago
Tue, Feb 17 - Tue, Mar 3
SEA
Seattle
KEF
Reykjavik
CA $685 Roundtrip, found 4 days ago
CA $685
Roundtrip
found 4 days ago
Select Icelandair flight, departing Tue, Feb 17 from Seattle to Reykjavik, returning Tue, Mar 3, priced at CA $685 found 4 days ago
Wed, Apr 15 - Wed, Apr 22
SEA
Seattle
KEF
Reykjavik
CA $729 Roundtrip, found 1 day ago
CA $729
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Wed, Apr 15 from Seattle to Reykjavik, returning Wed, Apr 22, priced at CA $729 found 1 day ago
Wed, Apr 29 - Tue, May 5
SEA
Seattle
KEF
Reykjavik
CA $746 Roundtrip, found 4 days ago
CA $746
Roundtrip
found 4 days ago
Select Virgin Atlantic flight, departing Wed, Apr 29 from Seattle to Reykjavik, returning Tue, May 5, priced at CA $746 found 4 days ago
Fri, Apr 17 - Mon, Apr 20
SEA
Seattle
KEF
Reykjavik
CA $798 Roundtrip, found 1 day ago
CA $798
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Fri, Apr 17 from Seattle to Reykjavik, returning Mon, Apr 20, priced at CA $798 found 1 day ago
Wed, May 13 - Sun, May 24
SEA
Seattle
KEF
Reykjavik
CA $825 Roundtrip, found 2 days ago
CA $825
Roundtrip
found 2 days ago
Select Virgin Atlantic flight, departing Wed, May 13 from Seattle to Reykjavik, returning Sun, May 24, priced at CA $825 found 2 days ago
Wed, Apr 15 - Wed, Apr 22
SEA
Seattle
KEF
Reykjavik
CA $842 Roundtrip, found 1 day ago
CA $842
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Wed, Apr 15 from Seattle to Reykjavik, returning Wed, Apr 22, priced at CA $842 found 1 day ago
Wed, Apr 29 - Tue, May 5
SEA
Seattle
KEF
Reykjavik
CA $861 Roundtrip, found 4 days ago
CA $861
Roundtrip
found 4 days ago
Select Icelandair flight, departing Wed, Apr 29 from Seattle to Reykjavik, returning Tue, May 5, priced at CA $861 found 4 days ago
Fri, Apr 17 - Mon, Apr 20
SEA
Seattle
KEF
Reykjavik
CA $893 Roundtrip, found 1 day ago
CA $893
Roundtrip
found 1 day ago
Select Icelandair flight, departing Fri, Apr 17 from Seattle to Reykjavik, returning Mon, Apr 20, priced at CA $893 found 1 day ago

Frequently asked questions

Are there direct flights from SEA to KEF?
If you'd prefer to avoid layovers, it's wise to book your flight from Sea-Tac Airport to Keflavik Intl. Airport (KEF) in advance. Icelandair is the only air carrier that offers direct flights between Seattle and Reykjanesbær.
What airlines fly from Sea-Tac Airport to KEF?
With Icelandair, you won't have to put up with extended layovers or hanging about waiting for your next flight. This top-rated airline will fly you directly from Seattle to Reykjanesbær on one of the 30 flights servicing this route every month.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.
*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.