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 $594 round trip and CA $559 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Apr 23 - Thu, Apr 30
SEA
Seattle
KEF
Reykjavik
CA $594 Roundtrip, found 6 days ago
CA $594
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, Apr 23 from Seattle to Reykjavik, returning Thu, Apr 30, priced at CA $594 found 6 days ago
Mon, Apr 20 - Wed, Apr 29
SEA
Seattle
KEF
Reykjavik
CA $685 Roundtrip, found 7 hours ago
CA $685
Roundtrip
found 7 hours ago
Select Icelandair flight, departing Mon, Apr 20 from Seattle to Reykjavik, returning Wed, Apr 29, priced at CA $685 found 7 hours ago
Mon, Apr 20 - Wed, Apr 29
SEA
Seattle
KEF
Reykjavik
CA $687 Roundtrip, found 7 hours ago
CA $687
Roundtrip
found 7 hours ago
Select Icelandair flight, departing Mon, Apr 20 from Seattle to Reykjavik, returning Wed, Apr 29, priced at CA $687 found 7 hours ago
Thu, Feb 19 - Wed, Feb 25
SEA
Seattle
KEF
Reykjavik
CA $689 Roundtrip, found 2 days ago
CA $689
Roundtrip
found 2 days ago
Select Icelandair flight, departing Thu, Feb 19 from Seattle to Reykjavik, returning Wed, Feb 25, priced at CA $689 found 2 days ago
Thu, Apr 23 - Thu, Apr 30
SEA
Seattle
KEF
Reykjavik
CA $696 Roundtrip, found 6 days ago
CA $696
Roundtrip
found 6 days ago
Select Icelandair flight, departing Thu, Apr 23 from Seattle to Reykjavik, returning Thu, Apr 30, priced at CA $696 found 6 days ago
Wed, May 6 - Wed, May 13
SEA
Seattle
KEF
Reykjavik
CA $755 Roundtrip, found 5 days ago
CA $755
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Wed, May 6 from Seattle to Reykjavik, returning Wed, May 13, priced at CA $755 found 5 days ago
Sat, May 30 - Sun, Jun 7
SEA
Seattle
KEF
Reykjavik
CA $769 Roundtrip, found 6 days ago
CA $769
Roundtrip
found 6 days ago
Select Icelandair flight, departing Sat, May 30 from Seattle to Reykjavik, returning Sun, Jun 7, priced at CA $769 found 6 days ago
Thu, May 14 - Mon, May 18
SEA
Seattle
KEF
Reykjavik
CA $838 Roundtrip, found 3 days ago
CA $838
Roundtrip
found 3 days ago
Select Delta flight, departing Thu, May 14 from Seattle to Reykjavik, returning Mon, May 18, priced at CA $838 found 3 days ago
Sat, Aug 15 - Wed, Aug 26
SEA
Seattle
KEF
Reykjavik
CA $921 Roundtrip, found 1 day ago
CA $921
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Aug 15 from Seattle to Reykjavik, returning Wed, Aug 26, priced at CA $921 found 1 day ago
Thu, Sep 3 - Tue, Sep 8
SEA
Seattle
KEF
Reykjavik
CA $942 Roundtrip, found 4 days ago
CA $942
Roundtrip
found 4 days ago
Select Air France flight, departing Thu, Sep 3 from Seattle to Reykjavik, returning Tue, Sep 8, priced at CA $942 found 4 days 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.