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Cheap flights from Seattle to Reykjavik from $410

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 departing on 5/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Seattle to Reykjavik

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:00 pm - 9:25 am
SEA
-
KEF
7h 25mnonstop
Icelandair Logo
7:45 pm - 8:40 pm
KEF
-
SEA
7h 55mnonstop
$428Icelandair
Sun, May 10 - Thu, May 14
Delta Logo
12:00 pm - 9:30 am
SEA
-
KEF
14h 30m
1 stop
Delta Logo
11:25 am - 7:59 pm
KEF
-
SEA
15h 34m
1 stop
$438Delta
Tue, Apr 14 - Tue, Apr 21
Virgin Atlantic Logo
12:00 pm - 9:30 am
SEA
-
KEF
14h 30m
1 stop
Virgin Atlantic Logo
11:25 am - 9:49 pm
KEF
-
SEA
17h 24m
2 stops
$442Virgin Atlantic
Tue, Apr 14 - Tue, Apr 21
Delta Logo
10:40 pm - 9:30 am
SEA
-
KEF
27h 50m
1 stop
Delta Logo
11:25 am - 10:31 pm
KEF
-
SEA
18h 06m
1 stop
$445Delta
Wed, Apr 15 - Wed, Apr 22
Multiple Airlines Logo
9:51 am - 9:30 am
SEA
-
KEF
16h 39m
2 stops
Multiple Airlines Logo
11:25 am - 12:25 pm
KEF
-
SEA
32h 00m
2 stops
$447Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
KLM Logo
5:55 pm - 9:30 am
SEA
-
KEF
32h 35m
2 stops
KLM Logo
11:25 am - 12:25 pm
KEF
-
SEA
32h 00m
2 stops
$451KLM
Sat, Apr 25 - Thu, Apr 30
KLM Logo
9:35 am - 7:00 am
SEA
-
KEF
14h 25m
1 stop
KLM Logo
8:50 am - 8:41 pm
KEF
-
SEA
18h 51m
1 stop
$452KLM
Thu, May 7 - Mon, May 18
Delta Logo
7:20 am - 9:30 am
SEA
-
KEF
19h 10m
1 stop
Delta Logo
9:30 am - 11:44 pm
KEF
-
SEA
21h 14m
1 stop
$453Delta
Sat, May 2 - Wed, May 13
Delta Logo
5:30 am - 7:00 am
SEA
-
KEF
18h 30m
2 stops
Delta Logo
11:25 am - 8:10 pm
KEF
-
SEA
15h 45m
1 stop
$457Delta
Thu, May 7 - Mon, May 11
Delta Logo
3:35 pm - 7:40 am
SEA
-
KEF
33h 05m
1 stop
Delta Logo
11:25 am - 10:45 pm
KEF
-
SEA
18h 20m
1 stop
$459Delta
Wed, May 6 - Thu, May 14

KLM flights from Seattle to Reykjavik Keflavik Intl Airport

Our best KLM deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
KLM
Apr 25
SEA5:55 pmSeattle/Tacoma Intl
32h 35m
2 stops
KEF9:30 amReykjavik Keflavik Intl
Apr 30
KEF11:25 amReykjavik Keflavik Intl
32h 00m
2 stops
SEA12:25 pmSeattle/Tacoma Intl
$451
KLM
May 7
SEA9:35 amSeattle/Tacoma Intl
14h 25m
1 stop
KEF7:00 amReykjavik Keflavik Intl
May 18
KEF8:50 amReykjavik Keflavik Intl
18h 51m
1 stop
SEA8:41 pmSeattle/Tacoma Intl
$452

Scandinavian Airlines flights from Seattle to Reykjavik Keflavik Intl Airport

Our best Scandinavian Airlines deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
Scandinavian Airlines
May 9
SEA12:35 pmSeattle/Tacoma Intl
11h 25m
1 stop
KEF7:00 amReykjavik Keflavik Intl
May 16
KEF9:30 amReykjavik Keflavik Intl
18h 13m
1 stop
SEA8:43 pmSeattle/Tacoma Intl
$501
Scandinavian Airlines
May 7
SEA12:30 pmSeattle/Tacoma Intl
11h 30m
1 stop
KEF7:00 amReykjavik Keflavik Intl
May 16
KEF9:30 amReykjavik Keflavik Intl
18h 13m
1 stop
SEA8:43 pmSeattle/Tacoma Intl
$504
Scandinavian Airlines
May 8
SEA10:35 pmSeattle/Tacoma Intl
27h 55m
1 stop
KEF9:30 amReykjavik Keflavik Intl
May 17
KEF9:30 amReykjavik Keflavik Intl
14h 14m
2 stops
SEA4:44 pmSeattle/Tacoma Intl
$541

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Reykjavik Keflavik Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated March 20, 2026.
Use the filters below to find and compare flights from Seattle to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 5/10

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

Thu 5/14

7:45 pm-8:40 pm

Nonstop7h 55m

$428

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 4/14

12:00 pm-9:30 am

1 stop14h 30m

Reykjavik Keflavik Intl

Tue 4/21

11:25 am-7:59 pm

1 stop15h 34m

$438

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 4/14

12:00 pm-9:30 am

1 stop14h 30m

Reykjavik Keflavik Intl

Tue 4/21

11:25 am-9:49 pm

2 stops17h 24m

$442

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 4/15

10:40 pm-9:30 am

1 stop27h 50m

Reykjavik Keflavik Intl

Wed 4/22

11:25 am-10:31 pm

1 stop18h 06m

$445

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 4/14

9:51 am-9:30 am

2 stops16h 39m

Reykjavik Keflavik Intl

Tue 4/21

11:25 am-12:25 pm

2 stops32h 00m

$447

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 4/25

5:55 pm-9:30 am

2 stops32h 35m

Reykjavik Keflavik Intl

Thu 4/30

11:25 am-12:25 pm

2 stops32h 00m

$451

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 5/7

9:35 am-7:00 am

1 stop14h 25m

Reykjavik Keflavik Intl

Mon 5/18

8:50 am-8:41 pm

1 stop18h 51m

$452

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 5/2

7:20 am-9:30 am

1 stop19h 10m

Reykjavik Keflavik Intl

Wed 5/13

9:30 am-11:44 pm

1 stop21h 14m

$453

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 5/7

5:30 am-7:00 am

2 stops18h 30m

Reykjavik Keflavik Intl

Mon 5/11

11:25 am-8:10 pm

1 stop15h 45m

$457

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 5/6

3:35 pm-7:40 am

1 stop33h 05m

Reykjavik Keflavik Intl

Thu 5/14

11:25 am-10:45 pm

1 stop18h 20m

$459

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 October is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from Seattle, with most prices found around $425. If you’re not able to fly to Reykjavik Keflavik Intl Airport in October, then January is your next best option. Flight prices from Seattle to Reykjavik Keflavik Intl Airport during January average around $481.

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 Wednesday when prices can be found for as low as $560. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Friday, with ticket prices averaging around $604.

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 at noon when flights can be purchased for as low as $532. Flights in the evening are often more expensive with an average ticket price of $611.

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 weeks ahead of your departure date. In general, you can expect to find flights to Reykjavik Keflavik Intl Airport for around $604 when searching 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 $496 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.

Can stopping save me money on Seattle to Reykjavik Keflavik Intl Airport flights?

You could potentially save up to 48% on your flight if you consider stops on a Seattle to Reykjavik Keflavik Intl Airport flight.

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

As of March 2026, prices for Seattle to Reykjavik Keflavik Intl Airport flights are approximately 11% cheaper 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

$318

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 $318. The best round-trip flight deal from Seattle to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is $553.
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.
Search flight deals

  • 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
IcelandairPriceFrom $391Free CancellationRating
7.0
625 reviews
Search Icelandair flights
Alaska AirlinesPriceFrom $743Free CancellationRating
7.9
12,081 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Reykjavik Keflavik Intl Airport

    Alaska Airlines is one of the most popular airlines flying from Seattle to Reykjavik Keflavik Intl Airport, operating 7 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Reykjavik Keflavik Intl Airport starts from $743 round-trip, up to an average price of $848. Our users have rated Alaska Airlines at 7.9/10.

  • Icelandair Flights From Seattle to Reykjavik Keflavik Intl Airport

    The best Icelandair deal for Seattle to Reykjavik Keflavik Intl Airport flight tickets found on momondo in the last 72 hours was $391, round-trip. It should be noted that an average Icelandair flight deal for this route in this time was higher, at $598 round-trip. Icelandair operates 2 flights out of Seattle into Reykjavik Keflavik Intl Airport in an average week, so prices vary by time and availability. 625 Icelandair reviews by users on momondo have scored the airline at 7.0/10.

Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Keflavik
Selfoss
Hella
Hveragerdi
Borgarnes
Grindavik
Kopavogur

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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