฿16,350 Cheap Flights from Seattle (SEA) to Reykjavik (KEF)

View ฿16,350 flight on Fri, 6 Mar 2026Opens in a new window

Popular airlines from Seattle to Reykjavik (KEF-Keflavik Intl.)

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

Prices were available within the past 7 days and start at ฿16,350 for one-way flights and ฿15,870 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿15,870 Return, just found
฿15,870
Return
just found
Select Icelandair flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿15,870 just found
British Airways
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿37,170 Return, just found
฿37,170
Return
just found
Select British Airways flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿37,170 just found
American Airlines
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿42,595 Return, just found
฿42,595
Return
just found
Select American Airlines flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿42,595 just found
American Airlines
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿42,630 Return, just found
฿42,630
Return
just found
Select American Airlines flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿42,630 just found
American Airlines
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿42,950 Return, just found
฿42,950
Return
just found
Select American Airlines flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿42,950 just found
British Airways
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿43,040 Return, just found
฿43,040
Return
just found
Select British Airways flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿43,040 just found
American Airlines
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿43,075 Return, just found
฿43,075
Return
just found
Select American Airlines flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿43,075 just found
Finnair
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿43,235 Return, just found
฿43,235
Return
just found
Select Finnair flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿43,235 just found
Finnair
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿43,270 Return, just found
฿43,270
Return
just found
Select Finnair flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿43,270 just found
Alaska Airlines
Mon, 12 Jan - Wed, 21 Jan
SEA
Seattle
KEF
Reykjavik
฿46,290 Return, just found
฿46,290
Return
just found
Select Alaska Airlines flight, departing Mon, 12 Jan from Seattle to Reykjavik, returning Wed, 21 Jan, priced at ฿46,290 just found

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

October is typically the cheapest month to fly

From ฿12,383 - ฿28,753 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 ฿15,870. 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
฿15,870
Distance
5776 km
Average flight time
7 hours 40 mins

Book with confidence

Perfect flights from Seattle to Reykjavik

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seattle to Reykjavik. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Seattle - Tacoma Intl. to Keflavik Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿16,350 and roundtrip prices from ฿15,870. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Keflavik Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Reykjavik.
Perfect flights from Seattle to Reykjavik
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