SEA - KEF

C$ 342 Find Cheap Flights from Seattle to Reykjavik

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Keflavik Intl departing on 26/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Reykjavik Keflavik Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Reykjavik, as well as popular online travel agencies
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Cheap Flight Deals from Seattle to Reykjavik (SEA-KEF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Reykjavik that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Seattle to Keflavik Intl

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Keflavik Intl.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Icelandair Logo
7:00 p.m. - 9:25 a.m.SEA-KEF
7h 25mdirect
Icelandair Logo
7:45 p.m. - 8:40 p.m.KEF-SEA
7h 55mdirect
C$ 745Icelandair
Find Deal
Sat, 11 Oct - Fri, 17 Oct
WestJet Logo
1:50 p.m. - 8:15 a.m.SEA-KEF
11h 25m1 stop
WestJet Logo
9:35 a.m. - 8:28 p.m.KEF-SEA
17h 53m1 stop
C$ 746WestJet
Find Deal
Wed, 9 Jul - Thu, 17 Jul
Delta Logo
11:15 a.m. - 9:30 a.m.SEA-KEF
15h 15m1 stop
Delta Logo
11:25 a.m. - 10:48 p.m.KEF-SEA
18h 23m1 stop
C$ 776Delta
Find Deal
Sun, 12 Oct - Sun, 19 Oct
Delta Logo
11:15 a.m. - 9:30 a.m.SEA-KEF
15h 15m1 stop
Delta Logo
11:25 a.m. - 10:48 p.m.KEF-SEA
18h 23m1 stop
C$ 778Delta
Find Deal
Sat, 11 Oct - Sun, 19 Oct
KLM Logo
9:50 a.m. - 6:20 a.m.SEA-KEF
13h 30m1 stop
KLM Logo
9:30 a.m. - 4:17 p.m.KEF-SEA
13h 47m1 stop
C$ 784KLM
Find Deal
Tue, 3 Jun - Tue, 10 Jun
KLM Logo
9:50 a.m. - 6:20 a.m.SEA-KEF
13h 30m1 stop
KLM Logo
9:30 a.m. - 4:55 p.m.KEF-SEA
14h 25m2 stops
C$ 799KLM
Find Deal
Sun, 20 Jul - Wed, 30 Jul
 Logo
5:50 p.m. - 6:20 a.m.SEA-KEF
29h 30m2 stops
 Logo
11:25 a.m. - 8:23 p.m.KEF-SEA
15h 58m1 stop
C$ 813
Find Deal
Mon, 12 May - Mon, 19 May
 Logo
11:48 p.m. - 8:30 a.m.SEA-KEF
25h 42m1 stop
 Logo
9:30 a.m. - 11:10 a.m.KEF-SEA
32h 40m2 stops
C$ 838
Find Deal
Sat, 16 Aug - Sun, 24 Aug
United Airlines Logo
11:58 p.m. - 8:30 a.m.SEA-KEF
25h 32m2 stops
United Airlines Logo
9:50 a.m. - 3:51 p.m.KEF-SEA
37h 01m2 stops
C$ 843United Airlines
Find Deal
Sat, 16 Aug - Sun, 24 Aug
United Airlines Logo
12:20 a.m. - 8:30 a.m.SEA-KEF
25h 10m1 stop
United Airlines Logo
11:00 a.m. - 8:42 p.m.KEF-SEA
16h 42m2 stops
C$ 874United Airlines
Find Deal
Sat, 16 Aug - Mon, 25 Aug

KAYAK's insights & trends for Seattle to Keflavik Intl flights

Get data-powered insights and trends into flights from Seattle to Keflavik Intl to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Seattle to Reykjavik Keflavik Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Reykjavik Keflavik Intl Airport is May, where tickets cost C$ 950 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is C$ 1,173 and C$ 1,097 respectively.

How far in advance should I book a flight from Seattle to Reykjavik Keflavik Intl Airport?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Reykjavik Keflavik Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Seattle to Reykjavik Keflavik Intl Airport, you should book around 5 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know

Low season

November

High season

August

Cheapest flight

C$ 342
Best time to beat the crowds (3% less expensive on average)
Most popular time to fly and prices are also 3% lower on average.
Flight from Seattle to Reykjavik

When to book flights from Seattle to Keflavik Intl

Are your dates flexible? Find out the best times to travel from Seattle to Keflavik Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Seattle to Reykjavik flights

  • What is the cheapest flight from Seattle to Reykjavik Keflavik Intl Airport?

    In the last 3 days, the lowest price for a flight from Seattle to Reykjavik Keflavik Intl Airport was C$ 247 for a one-way ticket and C$ 538 for a round-trip.

  • Which airports will I be using when flying from Seattle to Reykjavik?

    When flying out of Seattle you will be using Seattle/Tacoma Intl. You will be landing at Reykjavik, also known as Reykjavik Keflavik Intl.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Reykjavik?

    All the following airlines offer inflight Wi-Fi service on the Seattle to Reykjavik flight route: Air France, Lufthansa, KLM, Delta, United Airlines, and Virgin Atlantic.

  • Which aircraft models fly most regularly from Seattle to Reykjavik?

    The Airbus A330-900neo is the aircraft model that flies most regularly on the Seattle to Reykjavik flight route.

  • Which airline alliances offer flights from Seattle to Reykjavik?

    oneworld is the only airline alliance operating flights between Seattle and Reykjavik.

  • On which days can I fly direct from Seattle to Reykjavik?

    There are direct flights from Seattle to Reykjavik on a daily basis.

  • How does KAYAK find such low prices on flights from Seattle to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from Seattle is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to Seattle with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from Seattle to Reykjavik Keflavik Intl Airport

  • Looking for a cheap flight? 25% of our users found flights on this route for C$ 404 or less one-way and C$ 722 or less round-trip.

Prefer to fly direct from Seattle to Reykjavik?

Find which airlines fly direct from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Reykjavik Keflavik Intl

Monday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Tuesday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Wednesday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Thursday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Friday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Saturday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Sunday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

See more nonstop flights

Direct returns

Reykjavik Keflavik Intl to Seattle/Tacoma Intl

Monday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Tuesday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Wednesday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Thursday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Friday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Saturday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

Sunday

Alaska Airlines,Icelandair

Alaska Airlines,Icelandair

See more nonstop flights
See more nonstop flights

Everything you need to know for your flight from Seattle to Keflavik Intl

Information on your arrival and departure airports

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