Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Reykjavik from $310

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 11/11. 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

Find the cheapest flights from Seattle to Reykjavik

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:35 pm - 9:00 am
SEA
-
KEF
7h 25mnonstop
Alaska Airlines Logo
12:45 pm - 1:40 pm
KEF
-
SEA
7h 55mnonstop
$494Alaska Airlines
Sun, Jun 28 - Wed, Jul 1
United Airlines Logo
11:20 pm - 8:30 am
SEA
-
KEF
26h 10m
1 stop
United Airlines Logo
12:00 pm - 7:06 pm
KEF
-
SEA
14h 06m
1 stop
$509United Airlines
Thu, Jun 25 - Wed, Jul 1
United Airlines Logo
7:00 am - 8:50 am
SEA
-
KEF
18h 50m
1 stop
United Airlines Logo
11:30 am - 8:00 am
KEF
-
SEA
27h 30m
2 stops
$510United Airlines
Thu, Jul 16 - Sun, Jul 26
Air Canada Logo
5:45 am - 7:55 am
SEA
-
KEF
19h 10m
2 stops
Air Canada Logo
9:15 am - 10:07 am
KEF
-
SEA
31h 52m
2 stops
$511Air Canada
Mon, Jul 6 - Fri, Jul 10
Air Canada Logo
5:45 am - 7:55 am
SEA
-
KEF
19h 10m
2 stops
Air Canada Logo
9:50 am - 6:32 pm
KEF
-
SEA
39h 42m
2 stops
$515Air Canada
Thu, Jun 25 - Wed, Jul 1
Air Canada Logo
5:45 am - 7:55 am
SEA
-
KEF
19h 10m
2 stops
Air Canada Logo
10:00 am - 9:07 pm
KEF
-
SEA
18h 07m
1 stop
$516Air Canada
Mon, Jul 6 - Mon, Jul 13
United Airlines Logo
1:00 pm - 8:30 am
SEA
-
KEF
12h 30m
1 stop
United Airlines Logo
10:00 am - 9:07 pm
KEF
-
SEA
18h 07m
1 stop
$517United Airlines
Fri, Jul 3 - Tue, Jul 7
Delta Logo
5:30 am - 7:40 am
SEA
-
KEF
19h 10m
1 stop
Delta Logo
8:45 am - 10:33 pm
KEF
-
SEA
20h 48m
1 stop
$519Delta
Mon, Jul 13 - Tue, Jul 21
Air Canada Logo
8:00 am - 8:45 am
SEA
-
KEF
17h 45m
1 stop
Air Canada Logo
10:00 am - 9:07 pm
KEF
-
SEA
18h 07m
1 stop
$520Air Canada
Sat, Jul 4 - Mon, Jul 13
United Airlines Logo
7:00 am - 8:30 am
SEA
-
KEF
18h 30m
2 stops
United Airlines Logo
10:00 am - 9:07 pm
KEF
-
SEA
18h 07m
1 stop
$521United Airlines
Fri, Jul 3 - Tue, Jul 7

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Jul 6
SEA5:45 amSeattle/Tacoma Intl
19h 10m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 10
KEF9:15 amReykjavik Keflavik Intl
31h 52m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$511
Air Canada
Jun 25
SEA5:45 amSeattle/Tacoma Intl
19h 10m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 1
KEF9:50 amReykjavik Keflavik Intl
39h 42m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$515
Air Canada
Jul 6
SEA5:45 amSeattle/Tacoma Intl
19h 10m
2 stops
KEF7:55 amReykjavik Keflavik Intl
Jul 13
KEF10:00 amReykjavik Keflavik Intl
18h 07m
1 stop
SEA9:07 pmSeattle/Tacoma Intl
$516

Delta flights from Seattle to Reykjavik Keflavik Intl Airport

Our best Delta deals on Seattle to Reykjavik Keflavik Intl Airport flight tickets
Delta
Jul 13
SEA5:30 amSeattle/Tacoma Intl
19h 10m
1 stop
KEF7:40 amReykjavik Keflavik Intl
Jul 21
KEF8:45 amReykjavik Keflavik Intl
20h 48m
1 stop
SEA10:33 pmSeattle/Tacoma Intl
$519
Delta
Jul 11
SEA9:05 amSeattle/Tacoma Intl
14h 55m
1 stop
KEF7:00 amReykjavik Keflavik Intl
Jul 23
KEF9:30 amReykjavik Keflavik Intl
21h 29m
2 stops
SEA11:59 pmSeattle/Tacoma Intl
$523
Delta
Jul 15
SEA6:05 pmSeattle/Tacoma Intl
29h 55m
1 stop
KEF7:00 amReykjavik Keflavik Intl
Jul 21
KEF9:30 amReykjavik Keflavik Intl
18h 18m
1 stop
SEA8:48 pmSeattle/Tacoma Intl
$526

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 June 15, 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 6/28

6:35 pm-9:00 am

Nonstop7h 25m

Reykjavik Keflavik Intl

Wed 7/1

12:45 pm-1:40 pm

Nonstop7h 55m

$494

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 6/25

11:20 pm-8:30 am

1 stop26h 10m

Reykjavik Keflavik Intl

Wed 7/1

12:00 pm-7:06 pm

1 stop14h 06m

$509

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 7/16

7:00 am-8:50 am

1 stop18h 50m

Reykjavik Keflavik Intl

Sun 7/26

11:30 am-8:00 am

2 stops27h 30m

$510

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 7/6

5:45 am-7:55 am

2 stops19h 10m

Reykjavik Keflavik Intl

Fri 7/10

9:15 am-10:07 am

2 stops31h 52m

$511

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 6/25

5:45 am-7:55 am

2 stops19h 10m

Reykjavik Keflavik Intl

Wed 7/1

9:50 am-6:32 pm

2 stops39h 42m

$515

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 7/6

5:45 am-7:55 am

2 stops19h 10m

Reykjavik Keflavik Intl

Mon 7/13

10:00 am-9:07 pm

1 stop18h 07m

$516

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Fri 7/3

1:00 pm-8:30 am

1 stop12h 30m

Reykjavik Keflavik Intl

Tue 7/7

10:00 am-9:07 pm

1 stop18h 07m

$517

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Mon 7/13

5:30 am-7:40 am

1 stop19h 10m

Reykjavik Keflavik Intl

Tue 7/21

8:45 am-10:33 pm

1 stop20h 48m

$519

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 7/4

8:00 am-8:45 am

1 stop17h 45m

Reykjavik Keflavik Intl

Mon 7/13

10:00 am-9:07 pm

1 stop18h 07m

$520

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Fri 7/3

7:00 am-8:30 am

2 stops18h 30m

Reykjavik Keflavik Intl

Tue 7/7

10:00 am-9:07 pm

1 stop18h 07m

$521

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between Seattle and Reykjavik Keflavik Intl Airport?

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

The month of January is, on average, the cheapest month to fly to Reykjavik Keflavik Intl Airport from Seattle, with most prices found around $481. If you’re not able to fly to Reykjavik Keflavik Intl Airport in January, then May is your next best option. Flight prices from Seattle to Reykjavik Keflavik Intl Airport during May average around $545.

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 $589. The most expensive day to fly to Reykjavik Keflavik Intl Airport is Saturday, with ticket prices averaging around $632.

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 $528. Flights in the evening are often more expensive with an average ticket price of $644.

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 from Seattle 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 $644 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 $529 on momondo.

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

There are 4 cabin classes available to choose from on Seattle to Reykjavik Keflavik Intl Airport 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 17% 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 June 2026, prices for Seattle to Reykjavik Keflavik Intl Airport flights are approximately 16% 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

$283

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 $283. The best round-trip flight deal from Seattle to Reykjavik Keflavik Intl Airport found on momondo in the last 72 hours is $606.
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

Frequently asked questions about flying from Seattle to Reykjavik Keflavik Intl Airport

  • 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 $396Free CancellationRating
7.0
675 reviews
Search Icelandair flights
Alaska AirlinesPriceFrom $496Free CancellationRating
7.9
12,509 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 27 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Reykjavik Keflavik Intl Airport starts from $496 round-trip, up to an average price of $810. 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 $396, round-trip. It should be noted that an average Icelandair flight deal for this route in this time was higher, at $618 round-trip. Icelandair operates 20 flights out of Seattle into Reykjavik Keflavik Intl Airport in an average week, so prices vary by time and availability. 675 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.

An easier way to manage your Reykjavik Keflavik Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 7/15
Wed 7/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Reykjavik