$523 Cheap Icelandair flights Seattle (SEA) to Reykjavik (KEF)

View $523 flight on Tue, Sep 9, 2025Opens in a new window

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$523 Cheap Icelandair flights Seattle (SEA) to Reykjavik (KEF)

Prices were available within the past 7 days and start at $523 for one-way flights and $646 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Mon, Aug 4 - Wed, Aug 13
SEA
Seattle
KEF
Reykjavik
$646 Roundtrip, found 3 days ago
$646
Roundtrip
found 3 days ago
Select Icelandair flight, departing Mon, Aug 4 from Seattle to Reykjavik, returning Wed, Aug 13, priced at $646 found 3 days ago
Flights from Seattle (SEA) to Reykjavik (KEF)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Keflavik Intl.
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Swiss International Air Lines, United, Virgin Atlantic, WestJet
Popular airline
Icelandair
Distance
3610 mi
Average flight time
14 hours 28 mins

Frequently asked questions

How much is an Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
You'll find affordable round-trip Icelandair flights from $646 from SEA to KEF by organizing your results from "Price (lowest to highest)" on Expedia. Or search for options from $523 for a one-way journey.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to KEF with Icelandair?
January is one of the least expensive months to jet away to Reykjavik with Icelandair. You could also find great deals on one-way and round-trip fares in April.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) with Icelandair?
Getting the best Icelandair deals from SEA to KEF often comes down to booking at the right moment. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better yet, you can pocket 17% on average by buying your fare on a Sunday compared to a Friday, which is often the most expensive day to book.* It's a good idea to start checking out flights about one month before your departure date.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Icelandair fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Hop on one of Icelandair's 7 direct weekly flights from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF). To see your options, enter your dates, destination and origin and hit search. Then apply the "Nonstop" and "Airline" filters.
How long does it take to fly from SEA to KEF with Icelandair?
The journey time for a nonstop Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) takes around 7h 40m.
What is the earliest Icelandair flight from SEA to KEF?
The earliest flight from SEA to KEF with Icelandair leaves at 2:35PM UTC-8. You'll land at 6:15AM UTC+0. The last Icelandair flight of the day takes off at 2:35PM UTC-8 and arrives at 6:15AM UTC+0. With approximately 20% fewer cancellations for morning and mid-morning flights, jetting out early is generally the smartest option.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Icelandair fly into in Reykjavik?
Keflavik Intl. Airport (KEF) is the primary Reykjavik hub for Icelandair flights from Seattle - Tacoma Intl. Airport (SEA).
What kind of luggage can I take on an Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
A standard economy flight with Icelandair from SEA to KEF allows 1 cabin bag and a small personal item. Your hand luggage allowance is 1 cabin bag up to 13 lb with dimensions no larger than 21 inches x 7 inches x 13 inches. Size and weight restrictions may vary based on your cabin class and ticket type. To avoid additional fees at the airport, check your Icelandair booking or visit the airline's website before you pack.
Why fly with Icelandair from SEA to KEF?
Taking off from SEA to KEF with Icelandair means enjoying a range of perks, including a rewarding loyalty program and top-tier customer service. Plus, when you book through Expedia, One Key™ members can collect OneKeyCash™* to use on select future travel purchases. That's on top of the Icelandair Saga Club points you can earn with Icelandair.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does Icelandair fly from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
For the Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF) route, Icelandair typically uses Boeing 757-200 and Boeing 737 MAX 8 planes. Keep in mind that last-minute changes can occur for operational reasons, meaning your flight could be on another aircraft.
Can I change or cancel my Icelandair flight from Seattle - Tacoma Intl. Airport (SEA) to Keflavik Intl. Airport (KEF)?
Typically, you can cancel or reschedule your flight, although there may be additional fees if you booked more than 24 hours ago. Prefer to keep your options open? Apply the "No cancel fee" or "Changes included" filter to find flights that won't penalize you if you need to alter your plans. To modify your booking, visit "Trips," select your flight and click on "Manage Booking" for more details.

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