SEA - KEF

C$ 587 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 29/4. 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.
1 adult
1 adult, Economy, 0 bags

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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Everything you should know

Cheapest round-trip
C$ 600
Overall average: C$ 802
Delta
Tue 14/4Tue 21/4
SEA - KEF • 1 stop
Cheapest direct flights
C$ 668
Typical prices: C$ 737-C$ 947
Icelandair
Wed 6/5Tue 19/5
SEA - KEF • Direct
Direct flights
Every day
You can fly direct with Icelandair and Alaska Airlines. Average duration is 7h 32m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
3 weeks
in advance
Our data shows that travellers who book at least 3 weeks in advance save around 56% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 30% price drop
August
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Keflavik Intl!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Keflavik Intl (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 Keflavik Intl 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Keflavik Intl

Tue, 14 Apr - Tue, 21 Apr
Delta Logo
12:00 p.m. - 9:30 a.m.
SEA
-
KEF
14h 30m
1 stop
Delta Logo
11:25 a.m. - 7:59 p.m.
KEF
-
SEA
15h 34m
1 stop
C$ 600Delta
Tue, 14 Apr - Tue, 21 Apr
Virgin Atlantic Logo
12:00 p.m. - 9:30 a.m.
SEA
-
KEF
14h 30m
1 stop
Virgin Atlantic Logo
11:25 a.m. - 9:49 p.m.
KEF
-
SEA
17h 24m
2 stops
C$ 605Virgin Atlantic
Thu, 7 May - Mon, 18 May
KLM Logo
9:35 a.m. - 7:00 a.m.
SEA
-
KEF
14h 25m
1 stop
KLM Logo
8:50 a.m. - 8:41 p.m.
KEF
-
SEA
18h 51m
1 stop
C$ 619KLM
Sat, 2 May - Wed, 13 May
Delta Logo
7:20 a.m. - 9:30 a.m.
SEA
-
KEF
19h 10m
1 stop
Delta Logo
9:30 a.m. - 11:44 p.m.
KEF
-
SEA
21h 14m
1 stop
C$ 620Delta
Mon, 18 May - Sat, 23 May
Delta Logo
9:30 a.m. - 9:30 a.m.
SEA
-
KEF
17h 00m
2 stops
Delta Logo
8:45 a.m. - 8:30 p.m.
KEF
-
SEA
18h 45m
2 stops
C$ 626Delta
Wed, 6 May - Mon, 11 May
Delta Logo
3:35 p.m. - 7:40 a.m.
SEA
-
KEF
33h 05m
1 stop
Delta Logo
11:25 a.m. - 8:10 p.m.
KEF
-
SEA
15h 45m
1 stop
C$ 628Delta
Fri, 1 May - Tue, 12 May
Delta Logo
4:00 p.m. - 9:30 a.m.
SEA
-
KEF
34h 30m
1 stop
Delta Logo
8:45 a.m. - 8:41 p.m.
KEF
-
SEA
18h 56m
1 stop
C$ 630Delta
Fri, 8 May - Sun, 17 May
Multiple Airlines Logo
10:35 p.m. - 9:30 a.m.
SEA
-
KEF
27h 55m
1 stop
Multiple Airlines Logo
8:50 a.m. - 10:48 p.m.
KEF
-
SEA
20h 58m
1 stop
C$ 633Multiple Airlines
Fri, 8 May - Mon, 18 May
Multiple Airlines Logo
10:35 p.m. - 9:30 a.m.
SEA
-
KEF
27h 55m
1 stop
Multiple Airlines Logo
9:30 a.m. - 4:44 p.m.
KEF
-
SEA
14h 14m
2 stops
C$ 638Multiple Airlines
Fri, 1 May - Thu, 7 May
Multiple Airlines Logo
10:40 p.m. - 9:30 a.m.
SEA
-
KEF
27h 50m
1 stop
Multiple Airlines Logo
11:25 a.m. - 10:48 p.m.
KEF
-
SEA
18h 23m
2 stops
C$ 639Multiple Airlines
Booking Insights

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 October, where tickets cost C$ 582 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is C$ 1,026 and C$ 963 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 3 weeks before departure, which saves you about 56% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Find deals

Good to know

Low seasonNovember
Cheapest flightC$ 587
Best time to beat the crowds but there is an average 16% increase in price.
Most popular time to fly and prices are also 8% 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$ 587 for a one-way ticket and C$ 600 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, Delta, Virgin Atlantic, KLM, Scandinavian Airlines, Alaska Airlines, Lufthansa, and United Airlines.

  • 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.

  • 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.

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$ 269 or less one-way and C$ 751 or less round-trip.

Prefer to fly direct from Seattle to Reykjavik?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Reykjavik Keflavik Intl.
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

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Tuesday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Wednesday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Thursday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Friday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Saturday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Sunday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

See more nonstop flights

Direct returns

Reykjavik Keflavik Intl to Seattle/Tacoma Intl

Monday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Tuesday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Wednesday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Thursday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Friday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Saturday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

Sunday

Icelandair,Alaska Airlines

Icelandair,Alaska Airlines

See more nonstop flights

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

Information on your arrival and departure airports

Seattle (SEA)
Keflavik Intl (KEF)