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 $687 round trip and CA $704 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Mar 17 - Fri, Mar 27
SEA
Seattle
KEF
Reykjavik
CA $687 Roundtrip, found 12 hours ago
CA $687
Roundtrip
found 12 hours ago
Select Icelandair flight, departing Tue, Mar 17 from Seattle to Reykjavik, returning Fri, Mar 27, priced at CA $687 found 12 hours ago
Thu, Jan 15 - Thu, Jan 22
SEA
Seattle
KEF
Reykjavik
CA $689 Roundtrip, found 4 days ago
CA $689
Roundtrip
found 4 days ago
Select Icelandair flight, departing Thu, Jan 15 from Seattle to Reykjavik, returning Thu, Jan 22, priced at CA $689 found 4 days ago
Mon, Mar 2 - Wed, Mar 11
SEA
Seattle
KEF
Reykjavik
CA $689 Roundtrip, found 2 days ago
CA $689
Roundtrip
found 2 days ago
Select Icelandair flight, departing Mon, Mar 2 from Seattle to Reykjavik, returning Wed, Mar 11, priced at CA $689 found 2 days ago
Mon, Mar 16 - Wed, Mar 25
SEA
Seattle
KEF
Reykjavik
CA $847 Roundtrip, found 4 days ago
CA $847
Roundtrip
found 4 days ago
Select Icelandair flight, departing Mon, Mar 16 from Seattle to Reykjavik, returning Wed, Mar 25, priced at CA $847 found 4 days ago
Tue, Mar 24 - Sun, Mar 29
SEA
Seattle
KEF
Reykjavik
CA $862 Roundtrip, found 1 day ago
CA $862
Roundtrip
found 1 day ago
Select Icelandair flight, departing Tue, Mar 24 from Seattle to Reykjavik, returning Sun, Mar 29, priced at CA $862 found 1 day ago
Sun, Mar 1 - Mon, Mar 9
SEA
Seattle
KEF
Reykjavik
CA $865 Roundtrip, found 2 days ago
CA $865
Roundtrip
found 2 days ago
Select Icelandair flight, departing Sun, Mar 1 from Seattle to Reykjavik, returning Mon, Mar 9, priced at CA $865 found 2 days ago
Fri, Mar 27 - Tue, Mar 31
SEA
Seattle
KEF
Reykjavik
CA $876 Roundtrip, found 1 day ago
CA $876
Roundtrip
found 1 day ago
Select Icelandair flight, departing Fri, Mar 27 from Seattle to Reykjavik, returning Tue, Mar 31, priced at CA $876 found 1 day ago
Tue, Mar 17 - Fri, Mar 27
SEA
Seattle
KEF
Reykjavik
CA $894 Roundtrip, found 12 hours ago
CA $894
Roundtrip
found 12 hours ago
Select Icelandair flight, departing Tue, Mar 17 from Seattle to Reykjavik, returning Fri, Mar 27, priced at CA $894 found 12 hours ago
Fri, Mar 27 - Tue, Mar 31
SEA
Seattle
KEF
Reykjavik
CA $917 Roundtrip, found 1 day ago
CA $917
Roundtrip
found 1 day ago
Select Icelandair flight, departing Fri, Mar 27 from Seattle to Reykjavik, returning Tue, Mar 31, priced at CA $917 found 1 day ago
Thu, Jan 15 - Fri, Jan 23
SEA
Seattle
KEF
Reykjavik
CA $927 Roundtrip, found 1 day ago
CA $927
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Thu, Jan 15 from Seattle to Reykjavik, returning Fri, Jan 23, priced at CA $927 found 1 day ago

Keflavik Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Center Hotels Klöpp

Center Hotels Klöpp

3 out of 5
Price was CA $1,320, price is now CA $1,180 per person
CA $1,180
per person
Jan 17 - Jan 20
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Reykjavik (KEF)
201 Hotel

201 Hotel

4 out of 5
Price was CA $1,362, price is now CA $1,183 per person
CA $1,183
per person
Jan 17 - Jan 20
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Reykjavik (REK)
Baldursbrá Guesthouse

Baldursbrá Guesthouse

2.5 out of 5
Price was CA $1,380, price is now CA $1,210 per person
CA $1,210
per person
Jan 17 - Jan 20
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Reykjavik (KEF)
Miðgarður by Center Hotels

Miðgarður by Center Hotels

4 out of 5
Price was CA $1,336, price is now CA $1,191 per person
CA $1,191
per person
Jan 17 - Jan 20
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Reykjavik (KEF)
Center Hotels Laugavegur

Center Hotels Laugavegur

4 out of 5
Price was CA $1,331, price is now CA $1,188 per person
CA $1,188
per person
Jan 17 - Jan 20
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Reykjavik (KEF)
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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.