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Cheap flights from Seattle to Reykjavik Keflavik Intl Airport from $247

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Reykjavik Keflavik Intl Airport departing on 7/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Seattle to Reykjavik

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Reykjavik.
Scandinavian Airlines Logo
4:00 pm - 9:30 amSEA-KEF
34h 30m1 stop
Scandinavian Airlines Logo
1:00 am - 1:50 pmKEF-SEA
19h 50m2 stops
$431Scandinavian Airlines
Find Deal
Sun, Jun 15 - Sun, Jun 22
Scandinavian Airlines Logo
4:00 pm - 10:15 amSEA-KEF
35h 15m2 stops
Scandinavian Airlines Logo
1:00 am - 1:50 pmKEF-SEA
19h 50m2 stops
$434Scandinavian Airlines
Find Deal
Sun, Jun 15 - Sun, Jun 22
Icelandair Logo
7:00 pm - 9:25 amSEA-KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pmKEF-SEA
7h 55mnonstop
$505Icelandair
Find Deal
Sun, Apr 13 - Tue, Apr 22
Icelandair Logo
3:45 pm - 6:15 amSEA-KEF
7h 30mnonstop
Icelandair Logo
7:45 pm - 8:40 pmKEF-SEA
7h 55mnonstop
$516Icelandair
Find Deal
Sun, Sep 14 - Wed, Oct 1
Delta Logo
7:20 am - 9:30 amSEA-KEF
19h 10m1 stop
Delta Logo
8:50 am - 6:41 pmKEF-SEA
16h 51m1 stop
$561Delta
Find Deal
Sun, Sep 14 - Wed, Oct 1
Delta Logo
9:55 am - 9:30 amSEA-KEF
16h 35m2 stops
Delta Logo
11:25 am - 11:49 pmKEF-SEA
19h 24m2 stops
$577Delta
Find Deal
Tue, Apr 29 - Fri, May 16
United Airlines Logo
7:00 am - 8:30 amSEA-KEF
18h 30m1 stop
United Airlines Logo
10:00 am - 2:59 pmKEF-SEA
35h 59m2 stops
$696United Airlines
Find Deal
Sun, Sep 21 - Tue, Sep 30
United Airlines Logo
12:20 am - 8:30 amSEA-KEF
25h 10m1 stop
United Airlines Logo
10:00 am - 11:31 amKEF-SEA
32h 31m2 stops
$697United Airlines
Find Deal
Sat, Aug 16 - Wed, Sep 3
Air Canada Logo
7:15 pm - 8:35 amSEA-KEF
54h 20m2 stops
Air Canada Logo
10:00 am - 1:05 pmKEF-SEA
34h 05m2 stops
$704Air Canada
Find Deal
Fri, Sep 5 - Fri, Sep 19
Air Canada Logo
7:15 pm - 8:10 amSEA-KEF
53h 55m2 stops
Air Canada Logo
9:30 am - 6:36 pmKEF-SEA
40h 06m2 stops
$706Air Canada
Find Deal
Mon, Jul 14 - Sat, Jul 26

WestJet flights from Seattle to Reykjavik Keflavik Intl Airport

Our best WestJet deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
WestJet
Jul 25
SEA7:35 pmSeattle/Tacoma Intl
29h 40m
1 stop
KEF8:15 amReykjavik Keflavik Intl
Aug 6
KEF9:35 amReykjavik Keflavik Intl
17h 53m
1 stop
SEA8:28 pmSeattle/Tacoma Intl
WestJet
Jul 11
SEA7:35 pmSeattle/Tacoma Intl
29h 40m
1 stop
KEF8:15 amReykjavik Keflavik Intl
Jul 18
KEF9:35 amReykjavik Keflavik Intl
16h 03m
1 stop
SEA6:38 pmSeattle/Tacoma Intl
WestJet
Jun 23
SEA7:05 amSeattle/Tacoma Intl
18h 10m
1 stop
KEF8:15 amReykjavik Keflavik Intl
Jul 15
KEF9:35 amReykjavik Keflavik Intl
16h 03m
1 stop
SEA6:38 pmSeattle/Tacoma Intl

Icelandair flights from Seattle to Reykjavik Keflavik Intl Airport

Our best Icelandair deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
Icelandair
Apr 13
SEA7:00 pmSeattle/Tacoma Intl
7h 25m
KEF9:25 amReykjavik Keflavik Intl
Apr 22
KEF7:45 pmReykjavik Keflavik Intl
7h 55m
SEA8:40 pmSeattle/Tacoma Intl
Icelandair
Sep 14
SEA3:45 pmSeattle/Tacoma Intl
7h 30m
KEF6:15 amReykjavik Keflavik Intl
Oct 1
KEF7:45 pmReykjavik Keflavik Intl
7h 55m
SEA8:40 pmSeattle/Tacoma Intl
Icelandair
Sep 14
SEA3:45 pmSeattle/Tacoma Intl
7h 30m
KEF6:15 amReykjavik Keflavik Intl
Oct 1
KEF7:45 pmReykjavik Keflavik Intl
7h 55m
SEA8:40 pmSeattle/Tacoma Intl

See travel insights to Reykjavik from

How to get the cheapest flight ticket from Seattle to Reykjavik Keflavik Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

The month of May is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from Seattle, with most prices found around $686. If you’re not able to fly to Reykjavik Keflavik Intl Airport in May, then November is your next best option. Flight prices from Seattle to Reykjavik Keflavik Intl Airport during November average around $730.

What is the cheapest day to depart on your flight to Reykjavik Keflavik Intl Airport?

The cheapest day to depart from Seattle to Reykjavik Keflavik Intl Airport is on a Tuesday when prices can be found for as low as $681. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Friday, with ticket prices averaging around $757.

What is the cheapest time of day to depart on your flight to Reykjavik Keflavik Intl Airport?

The cheapest time of day to fly to Reykjavik Keflavik Intl Airport is in the morning when flights can be purchased for as low as $533. Flights in the afternoon are often more expensive with an average ticket price of $745.

What is the cheapest Seattle/Tacoma Intl to Reykjavik Keflavik Intl flight route?

Fly from Seattle/Tacoma Intl to Reykjavik Keflavik Intl for the best Seattle/Tacoma Intl - Reykjavik Keflavik Intl flight prices

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

You are more likely to see cheaper flights to Reykjavik Keflavik Intl Airport from Seattle when booking 19 weeks ahead of your departure date. In general, you can expect to find flights to Reykjavik Keflavik Intl Airport for around $764 when searching 19 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Reykjavik Keflavik Intl Airport from Seattle for as low as $633 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Reykjavik Keflavik Intl flights?

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Reykjavik Keflavik Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Reykjavik Keflavik Intl Airport flight prices changed over time?

As of April 2025, prices for Seattle to Reykjavik Keflavik Intl Airport flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Reykjavik Keflavik Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Reykjavik Keflavik Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Reykjavik Keflavik Intl Airport (SEA to KEF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Reykjavik Keflavik Intl Airport

Best Price Found

$247

Fastest flight time

7h 25m

Direct flights

Every day
The best one-way flight to Reykjavik Keflavik Intl Airport from Seattle in the past 72 hours is $247. The best round-trip flight deal from Seattle to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is $431.
The fastest flight from Seattle to Reykjavik Keflavik Intl Airport takes 7h 25m
Direct flights go from Seattle to Reykjavik Keflavik Intl Airport every day.

  • How far is Seattle/Tacoma Intl to Reykjavik Keflavik Intl by plane?

    The distance between Seattle/Tacoma Intl and Reykjavik Keflavik Intl is about 3599.8 mi. A reasonable flight in good conditions will take 7h 25m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Reykjavik Keflavik Intl Airport.

  • What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?

    The necessary travel and health documents for your Reykjavik Keflavik Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Reykjavik Keflavik Intl Airport?

  • What is the most popular airline from Seattle to Reykjavik Keflavik Intl Airport?


Best airlines flying from Seattle to Reykjavik Keflavik Intl Airport

Compare and see reviews for airlines that fly from Seattle to Reykjavik Keflavik Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $417Free CancellationRating
8.0
7,899 reviews
Search Delta flights
Air CanadaPriceFrom $454Free CancellationRating
7.0
9,013 reviews
Search Air Canada flights
United AirlinesPriceFrom $485Free CancellationRating
7.4
8,615 reviews
Search United Airlines flights
IcelandairPriceFrom $550Free CancellationRating
7.0
476 reviews
Search Icelandair flights
  • Icelandair Flights From Seattle to Reykjavik Keflavik Intl Airport

    Icelandair is one of the most popular airlines flying from Seattle to Reykjavik Keflavik Intl Airport, operating 4 flights/week on average for this route. A good Icelandair flight deal for Seattle to Reykjavik Keflavik Intl Airport starts from $550 round-trip, up to an average price of $764. Our users have rated Icelandair at 7.0/10.


Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Keflavik
Grindavik

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Reykjavik?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Reykjavik from Seattle.

Can I find flights from Seattle to Reykjavik with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Reykjavik flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Reykjavik?

Once all potential Seattle to Reykjavik flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Reykjavik right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Seattle to Reykjavik flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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