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Cheap flights from Seattle to Reykjavik from $248

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 10/5. 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

Icelandair Logo
7:00 pm - 9:25 amSEA-KEF
7h 25mnonstop
Icelandair Logo
5:05 pm - 6:00 pmKEF-SEA
7h 55mnonstop
$431Icelandair
Find Deal
Wed, Oct 22 - Wed, Oct 29
Icelandair Logo
2:35 pm - 6:15 amSEA-KEF
7h 40mnonstop
Icelandair Logo
5:05 pm - 5:00 pmKEF-SEA
7h 55mnonstop
$437Icelandair
Find Deal
Mon, Nov 17 - Fri, Dec 5
Icelandair Logo
2:35 pm - 6:15 amSEA-KEF
7h 40mnonstop
Icelandair Logo
5:05 pm - 5:00 pmKEF-SEA
7h 55mnonstop
$438Icelandair
Find Deal
Tue, Dec 2 - Thu, Dec 11
Air Canada Logo
10:00 am - 8:10 amSEA-KEF
15h 10m2 stops
Air Canada Logo
9:50 am - 6:36 pmKEF-SEA
15h 46m2 stops
$441Air Canada
Find Deal
Thu, Sep 4 - Tue, Sep 9
Air Canada Logo
10:00 am - 8:10 amSEA-KEF
15h 10m2 stops
Air Canada Logo
9:50 am - 10:59 amKEF-SEA
32h 09m1 stop
$448Air Canada
Find Deal
Thu, Sep 4 - Tue, Sep 9
United Airlines Logo
7:20 am - 8:10 amSEA-KEF
17h 50m1 stop
United Airlines Logo
9:30 am - 8:42 pmKEF-SEA
42h 12m2 stops
$459United Airlines
Find Deal
Thu, Aug 14 - Fri, Aug 22
United Airlines Logo
11:58 pm - 8:10 amSEA-KEF
25h 12m2 stops
United Airlines Logo
9:30 am - 3:32 pmKEF-SEA
37h 02m2 stops
$464United Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
Delta Logo
6:00 am - 6:20 amSEA-KEF
17h 20m1 stop
Delta Logo
8:45 am - 10:25 pmKEF-SEA
20h 40m1 stop
$474Delta
Find Deal
Sun, Oct 12 - Fri, Oct 17
Delta Logo
1:35 pm - 6:20 amSEA-KEF
33h 45m2 stops
Delta Logo
8:45 am - 11:57 pmKEF-SEA
22h 12m2 stops
$478Delta
Find Deal
Sat, Oct 11 - Tue, Oct 21
Logo
10:00 am - 8:15 amSEA-KEF
15h 15m2 stops
Logo
12:25 am - 11:55 amKEF-SEA
18h 30m1 stop
$510
Find Deal
Mon, Sep 15 - Sun, Sep 21

Icelandair flights from Seattle to Reykjavik Keflavik Intl Airport

Our best Icelandair deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
Icelandair
Oct 22
SEA7:00 pmSeattle/Tacoma Intl
7h 25m
KEF9:25 amReykjavik Keflavik Intl
Oct 29
KEF5:05 pmReykjavik Keflavik Intl
7h 55m
SEA6:00 pmSeattle/Tacoma Intl
$431
Find similar
Icelandair
Nov 17
SEA2:35 pmSeattle/Tacoma Intl
7h 40m
KEF6:15 amReykjavik Keflavik Intl
Dec 5
KEF5:05 pmReykjavik Keflavik Intl
7h 55m
SEA5:00 pmSeattle/Tacoma Intl
$437
Find similar
Icelandair
Dec 2
SEA2:35 pmSeattle/Tacoma Intl
7h 40m
KEF6:15 amReykjavik Keflavik Intl
Dec 11
KEF5:05 pmReykjavik Keflavik Intl
7h 55m
SEA5:00 pmSeattle/Tacoma Intl
$438
Find similar

Air Canada flights from Seattle to Reykjavik Keflavik Intl Airport

Our best Air Canada deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
Air Canada
Sep 4
SEA10:00 amSeattle/Tacoma Intl
15h 10m
2 stops
KEF8:10 amReykjavik Keflavik Intl
Sep 9
KEF9:50 amReykjavik Keflavik Intl
15h 46m
2 stops
SEA6:36 pmSeattle/Tacoma Intl
$441
Find similar
Air Canada
Sep 4
SEA10:00 amSeattle/Tacoma Intl
15h 10m
2 stops
KEF8:10 amReykjavik Keflavik Intl
Sep 9
KEF9:50 amReykjavik Keflavik Intl
32h 09m
1 stop
SEA10:59 amSeattle/Tacoma Intl
$448
Find similar
Air Canada
Sep 4
SEA7:15 amSeattle/Tacoma Intl
17h 55m
1 stop
KEF8:10 amReykjavik Keflavik Intl
Sep 9
KEF9:50 amReykjavik Keflavik Intl
32h 09m
1 stop
SEA10:59 amSeattle/Tacoma Intl
$452
Find similar

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 July 29, 2025.
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

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 10/22

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

Wed 10/29

5:05 pm-6:00 pm

Nonstop7h 55m

$431

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 11/17

2:35 pm-6:15 am

Nonstop7h 40m

Reykjavik Keflavik Intl

Fri 12/5

5:05 pm-5:00 pm

Nonstop7h 55m

$437

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 12/2

2:35 pm-6:15 am

Nonstop7h 40m

Reykjavik Keflavik Intl

Thu 12/11

5:05 pm-5:00 pm

Nonstop7h 55m

$438

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 9/4

10:00 am-8:10 am

2 stops15h 10m

Reykjavik Keflavik Intl

Tue 9/9

9:50 am-6:36 pm

2 stops15h 46m

$441

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 9/4

10:00 am-8:10 am

2 stops15h 10m

Reykjavik Keflavik Intl

Tue 9/9

9:50 am-10:59 am

1 stop32h 09m

$448

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 8/14

7:20 am-8:10 am

1 stop17h 50m

Reykjavik Keflavik Intl

Fri 8/22

9:30 am-8:42 pm

2 stops42h 12m

$459

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 8/27

11:58 pm-8:10 am

2 stops25h 12m

Reykjavik Keflavik Intl

Wed 9/3

9:30 am-3:32 pm

2 stops37h 02m

$464

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 10/12

6:00 am-6:20 am

1 stop17h 20m

Reykjavik Keflavik Intl

Fri 10/17

8:45 am-10:25 pm

1 stop20h 40m

$474

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 10/11

1:35 pm-6:20 am

2 stops33h 45m

Reykjavik Keflavik Intl

Tue 10/21

8:45 am-11:57 pm

2 stops22h 12m

$478

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 9/15

10:00 am-8:15 am

2 stops15h 15m

Reykjavik Keflavik Intl

Sun 9/21

12:25 am-11:55 am

1 stop18h 30m

$510

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 $550. If you’re not able to fly to Reykjavik Keflavik Intl Airport in October, then August is your next best option. Flight prices from Seattle to Reykjavik Keflavik Intl Airport during August average around $667.

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 $629. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Thursday, with ticket prices averaging around $683.

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 $673.

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 $724 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 $517 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 43% 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?

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

$248

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 $248. 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.
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
DeltaPriceFrom $323Free CancellationRating
8.0
7,979 reviews
Search Delta flights
IcelandairPriceFrom $397Free CancellationRating
7.0
521 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 20 flights/week on average for this route. A good Icelandair flight deal for Seattle to Reykjavik Keflavik Intl Airport starts from $397 round-trip, up to an average price of $706. 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
Hveragerdi
Selfoss
Hella
Borgarnes
Kopavogur
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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