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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

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

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $990 round trip and CA $368 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $990 Roundtrip, found 9 hours ago
CA $990
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $990 found 9 hours ago
Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $1,029 Roundtrip, found 9 hours ago
CA $1,029
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $1,029 found 9 hours ago
Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $1,037 Roundtrip, found 9 hours ago
CA $1,037
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $1,037 found 9 hours ago
Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $1,076 Roundtrip, found 9 hours ago
CA $1,076
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $1,076 found 9 hours ago
Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $1,181 Roundtrip, found 9 hours ago
CA $1,181
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $1,181 found 9 hours ago
Wed, Jul. 23 - Thu, Jul. 31
KEF
Reykjavik
SEA
Seattle
CA $1,191 Roundtrip, found 6 days ago
CA $1,191
Roundtrip
found 6 days ago
Select Icelandair flight, departing Wed, Jul. 23 from Reykjavik to Seattle, returning Thu, Jul. 31, priced at CA $1,191 found 6 days ago
Thu, Sep. 4 - Thu, Sep. 11
KEF
Reykjavik
SEA
Seattle
CA $1,228 Roundtrip, found 9 hours ago
CA $1,228
Roundtrip
found 9 hours ago
Select Icelandair flight, departing Thu, Sep. 4 from Reykjavik to Seattle, returning Thu, Sep. 11, priced at CA $1,228 found 9 hours ago
Wed, Jul. 23 - Thu, Jul. 31
KEF
Reykjavik
SEA
Seattle
CA $1,236 Roundtrip, found 6 days ago
CA $1,236
Roundtrip
found 6 days ago
Select Icelandair flight, departing Wed, Jul. 23 from Reykjavik to Seattle, returning Thu, Jul. 31, priced at CA $1,236 found 6 days ago
Wed, Jul. 23 - Thu, Jul. 31
KEF
Reykjavik
SEA
Seattle
CA $1,262 Roundtrip, found 6 days ago
CA $1,262
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jul. 23 from Reykjavik to Seattle, returning Thu, Jul. 31, priced at CA $1,262 found 6 days ago
Wed, Jul. 23 - Thu, Jul. 31
KEF
Reykjavik
SEA
Seattle
CA $1,271 Roundtrip, found 6 days ago
CA $1,271
Roundtrip
found 6 days ago
Select Air Canada flight, departing Wed, Jul. 23 from Reykjavik to Seattle, returning Thu, Jul. 31, priced at CA $1,271 found 6 days ago

Frequently asked questions

Are there direct flights from KEF to SEA?
If you'd prefer to fly directly from Reykjavík–Keflavík Airport to Seattle - Tacoma Intl. Airport (SEA), try Icelandair. This airline is just the ticket if you want to reach your destination with minimum fuss.
What airlines fly from Reykjavík–Keflavík Airport to SEA?
Worked out the dates for your big adventure? Want to fly nonstop from Reykjanesbær to Seattle? With Icelandair offering 30 flights each month, you'll be taking off soon enough.
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.

Popular Flight Routes from Reykjavik (KEF)

Travelers at KEF love to visit these top cities. Roam to the top destinations from Reykjavik (KEF) today with the cheap prices from Travelocity!

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle(SEA) today with the cheap prices from Travelocity!

*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.