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

View AU$588 flight on Fri, 29 May 2026Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Keflavik International Airport (KEF)

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$699 Return, found 1 day ago
AU$699
Return
found 1 day ago
Select Alaska Airlines flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$699 found 1 day ago
Delta
Wed, 22 Apr - Sun, 26 Apr
SEA
Seattle
KEF
Reykjavik
AU$700 Return, found 5 days ago
AU$700
Return
found 5 days ago
Select Delta flight, departing Wed, 22 Apr from Seattle to Reykjavik, returning Sun, 26 Apr, priced at AU$700 found 5 days ago
Icelandair
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$706 Return, found 1 day ago
AU$706
Return
found 1 day ago
Select Icelandair flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$706 found 1 day ago
Icelandair
Mon, 4 May - Mon, 11 May
SEA
Seattle
KEF
Reykjavik
AU$716 Return, found 1 day ago
AU$716
Return
found 1 day ago
Select Icelandair flight, departing Mon, 4 May from Seattle to Reykjavik, returning Mon, 11 May, priced at AU$716 found 1 day ago
Virgin Atlantic
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$721 Return, found 1 day ago
AU$721
Return
found 1 day ago
Select Virgin Atlantic flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$721 found 1 day ago
Delta
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$721 Return, found 1 day ago
AU$721
Return
found 1 day ago
Select Delta flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$721 found 1 day ago
Delta
Wed, 22 Apr - Sun, 26 Apr
SEA
Seattle
KEF
Reykjavik
AU$740 Return, found 5 days ago
AU$740
Return
found 5 days ago
Select Delta flight, departing Wed, 22 Apr from Seattle to Reykjavik, returning Sun, 26 Apr, priced at AU$740 found 5 days ago
Delta
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$760 Return, found 1 day ago
AU$760
Return
found 1 day ago
Select Delta flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$760 found 1 day ago
KLM
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$799 Return, found 1 day ago
AU$799
Return
found 1 day ago
Select KLM flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$799 found 1 day ago
Virgin Atlantic
Fri, 29 May - Sun, 7 June
SEA
Seattle
KEF
Reykjavik
AU$803 Return, found 1 day ago
AU$803
Return
found 1 day ago
Select Virgin Atlantic flight, departing Fri, 29 May from Seattle to Reykjavik, returning Sun, 7 June, priced at AU$803 found 1 day ago

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

April is typically the cheapest month to fly

From AU$602 - AU$1,683 per traveller.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Reykjavík–Keflavík Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from SEA to Reykjavík–Keflavík Airport was AU$699. Fares this good don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from SEA to Keflavik Intl. Airport (KEF)?
Each air carrier has its own terms and conditions. If you do decide to cancel, follow the instructions on our Customer Service Portal.
How do I find cheap flights from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to KEF flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SEA to Reykjavík–Keflavík Airport?
With a flight distance of 5 800 kilometres between Sea-Tac Airport and Keflavik Intl. Airport (KEF), this is a long-haul flight. Make sure you stay hydrated and move your legs from time to time.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Check out Icelandair (FI) if you want to fly directly from Seattle - Tacoma Intl. Airport (SEA) to KEF. This top airline operates 30 flights monthly, so you're sure to find one that fits your travel plans.
Are Sea-Tac Airport to Reykjavík–Keflavík Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to pick up an awesome last-minute deal from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF), but it can also be hit-or-miss. As many airlines release seats up to 12 months in advance, it's worth keeping an eye on fares early and being ready to book when you spot a bargain. Expedia compares air carrier prices and updates flight deals often, so you can be certain you're always getting the latest offers.

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Keflavik Intl.
Return price
AU$698
Distance
5776 km
Average flight time
14 hours 30 mins

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