HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Keflavik Intl

$322+ Cheap flights from Washington to Keflavik Intl (KEF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
feb. 13 — feb. 201
vie. 2/13
vie. 2/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Keflavik Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Washington to Keflavik Intl

Keep the following information in mind while searching for Washington to Keflavik Intl flight deals. Data was last updated enero 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$411
(Mytrip)

One-way from

$322
(Kiwi.com)

Popular in

March

Cheapest in

October

Average price

$686

Good round-trip deal

$480 or less

Good one-way deal

$395 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Reykjavik (REK) flights.
Search Deals
From Washington to Reykjavik Keflavik Intl
Search Deals
One-way flight from Washington to Reykjavik Keflavik Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($79 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Washington to Reykjavik Keflavik Intl.
Search Deals
Price to beat on a one-way flight from Washington to Reykjavik Keflavik Intl.
Search Deals

Find flight deals from Washington to Keflavik Intl

Cheapest flights from Washington to Keflavik Intl
Explore the most affordable flight options available from Washington to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 14, 2026.

This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/282:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
sáb. 3/75:00 pm
KEF
-
SEA
Nonstop8h 00m
Icelandair
Deal found 1/14$411
This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/32:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
sáb. 3/75:00 pm
KEF
-
SEA
Nonstop8h 00m
Icelandair
Deal found 1/14$412
This Mytrip deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/272:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
vie. 3/65:00 pm
KEF
-
SEA
Nonstop8h 00m
Icelandair
Deal found 1/13$413
This Mytrip deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/252:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
vie. 3/65:00 pm
KEF
-
SEA
Nonstop8h 00m
Icelandair
Deal found 1/13$414
This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/43:30 pm
PDX
-
KEF
Nonstop7h 35m
Icelandair
vie. 4/104:50 pm
KEF
-
PDX
Nonstop8h 10m
Icelandair
Deal found 1/14$414
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/242:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
jue. 3/55:00 pm
KEF
-
SEA
Nonstop8h 00m
Icelandair
Deal found 1/13$416
This Cheapflightsfares deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/173:45 pm
PDX
-
KEF
Nonstop7h 30m
Icelandair
lun. 4/204:50 pm
KEF
-
PDX
Nonstop8h 10m
Icelandair
Deal found 1/13$416
This FlightHub deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/67:00 pm
SEA
-
KEF
Nonstop7h 25m
Icelandair
mié. 4/157:45 pm
KEF
-
SEA
Nonstop7h 55m
Icelandair
Deal found 1/13$418
This FlightHub deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/313:30 pm
PDX
-
KEF
Nonstop7h 35m
Icelandair
lun. 4/134:50 pm
KEF
-
PDX
Nonstop8h 10m
Icelandair
Deal found 1/14$418
This Mytrip deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/193:40 pm
SEA
-
KEF
Nonstop7h 35m
Icelandair
sáb. 5/307:45 pm
KEF
-
SEA
Nonstop7h 55m
Icelandair
Deal found 1/13$428
This Kiwi.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/203:30 pm
PDX
-
KEF
Nonstop7h 35m
Icelandair
lun. 4/274:50 pm
KEF
-
PDX
Nonstop8h 10m
Icelandair
Deal found 1/14$428
This Icelandair deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/173:35 pm
SEA
-
KEF
Nonstop7h 40m
Icelandair
vie. 3/277:50 pm
KEF
-
SEA
Nonstop7h 55m
Icelandair
Deal found 1/13$429

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington to Keflavik Intl 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, Cheapflights users made 2,558,603 searches. Data last updated enero 14, 2026.
Use the filters below to find and compare flights from Washington to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Washington

Fly to

Keflavik Intl

Route

Depart

Return

Price

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

dom. 2/1

2:35 pm-6:15 am

Nonstop7h 40m

Reykjavik Keflavik Intl

jue. 2/5

5:00 pm-5:00 pm

Nonstop8h 00m

$429

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

sáb. 4/25

3:30 pm-6:05 am

Nonstop7h 35m

Reykjavik Keflavik Intl

mié. 4/29

4:50 pm-6:00 pm

Nonstop8h 10m

$429

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

sáb. 4/25

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

jue. 4/30

11:25 am-8:25 am

2 stops28h 00m

$458

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

dom. 4/26

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

jue. 4/30

11:25 am-11:55 pm

2 stops19h 30m

$458

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

sáb. 4/25

7:05 am-9:30 am

2 stops19h 25m

Reykjavik Keflavik Intl

mié. 4/29

11:25 am-10:10 pm

1 stop17h 45m

$458

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

dom. 4/26

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

vie. 5/1

11:25 am-10:10 pm

1 stop17h 45m

$468

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

mar. 4/21

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

dom. 5/3

11:25 am-10:10 pm

1 stop17h 45m

$468

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

sáb. 4/25

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

vie. 5/1

11:25 am-10:10 pm

1 stop17h 45m

$468

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

dom. 4/26

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

dom. 5/3

11:25 am-10:10 pm

1 stop17h 45m

$468

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

vie. 4/24

7:32 pm-9:30 am

2 stops30h 58m

Reykjavik Keflavik Intl

vie. 5/1

11:25 am-10:10 pm

1 stop17h 45m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 49 results
1
2
3
...
5

Best time to book a flight from Washington to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Reykjavik Keflavik Intl Airport

What is the cheapest month to book a flight from State of Washington to Reykjavik Keflavik Intl Airport?

Currently, October is the cheapest month in which you can book a flight from State of Washington to Reykjavik Keflavik Intl Airport (average of $352). Flying from State of Washington to Reykjavik Keflavik Intl Airport in May is currently the most expensive (average of $514). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to KEF?

Find hourly flight availability from Washington to Keflavik Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 14, 2026.

When flying from State of Washington to Reykjavik Keflavik Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to Reykjavik Keflavik Intl Airport

Explore weekly flight availability from Washington to Keflavik Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated enero 14, 2026.

The most flights from USWA to KEF are scheduled on a Monday (3 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from State of Washington to Reykjavik Keflavik Intl Airport?

Related info for your journey

Find useful and relevant information for your journey from Washington to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Reykjavik Keflavik Intl Airport?

    Departing from State of Washington to Reykjavik Keflavik Intl Airport will take you 7h 40m. State of Washington and Reykjavik Keflavik Intl Airport are separated by a distance of 3608 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the most popular routes from State of Washington to Reykjavik Keflavik Intl Airport?

    While some choose either Portland - Reykjavik Keflavik Intl or Spokane - Reykjavik Keflavik Intl, Seattle/Tacoma Intl - Reykjavik Keflavik Intl is the most popular route from State of Washington to Reykjavik Keflavik Intl Airport.

  • What are the most reliable airlines from State of Washington to Reykjavik Keflavik Intl Airport?

    Consider Alaska Airlines (90%), Icelandair (90%) or airBaltic (82%) when booking your flight. These represent the most reliable airlines when flying from State of Washington to Reykjavik Keflavik Intl Airport.

  • What are the cheapest flights from State of Washington to Reykjavik Keflavik Intl Airport?

    On average you can expect to pay $1,459 for a flight from State of Washington to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $224 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at $400.

  • Can I find deals for flights from Washington to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on Washington to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Keflavik Intl.

  • Can I find deals for business class flights from Washington to Keflavik Intl?

    Yes. Cheapflights offers flight deals from Washington to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Reykjavik Keflavik Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from State of Washington to Reykjavik Keflavik Intl Airport (average of $352). Flying from State of Washington to Reykjavik Keflavik Intl Airport in May is currently the most expensive (average of $514). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Reykjavik Keflavik Intl Airport?

Book flights to Reykjavik Keflavik Intl Airport if you plan to visit one of these locations
Keflavik
Hveragerdi

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Keflavik Intl flights
Newark to Keflavik Intl flights
LaGuardia to Keflavik Intl flights
Dulles Intl to Keflavik Intl flights
Boston to Keflavik Intl flights
Baltimore to Keflavik Intl flights
O'Hare Intl to Keflavik Intl flights
Reagan-National to Keflavik Intl flights
Dallas/Fort Worth to Keflavik Intl flights
Seattle to Keflavik Intl flights
Los Angeles to Keflavik Intl flights
Detroit to Keflavik Intl flights
San Francisco to Keflavik Intl flights
Minneapolis to Keflavik Intl flights
Raleigh to Keflavik Intl flights
Midway to Keflavik Intl flights
Orlando to Keflavik Intl flights
Atlanta to Keflavik Intl flights
Denver to Keflavik Intl flights
Hobby to Keflavik Intl flights
Miami to Keflavik Intl flights
Love Field to Keflavik Intl flights
Philadelphia to Keflavik Intl flights
San Jose to Keflavik Intl flights
San Diego to Keflavik Intl flights
Nashville to Keflavik Intl flights
Burbank to Keflavik Intl flights
Pittsburgh to Keflavik Intl flights
George Bush Intcntl to Keflavik Intl flights
Austin to Keflavik Intl flights
Portland to Keflavik Intl flights
Oakland to Keflavik Intl flights
Fort Lauderdale to Keflavik Intl flights
Santa Ana to Keflavik Intl flights
Charlotte to Keflavik Intl flights
Tampa to Keflavik Intl flights
Salt Lake City to Keflavik Intl flights
Sky Harbor Intl to Keflavik Intl flights
Cleveland to Keflavik Intl flights
Cincinnati to Keflavik Intl flights
Ontario to Keflavik Intl flights
Indianapolis to Keflavik Intl flights
Richmond to Keflavik Intl flights
St. Louis to Keflavik Intl flights
West Palm Beach to Keflavik Intl flights
Las Vegas to Keflavik Intl flights
Jacksonville to Keflavik Intl flights
Sacramento to Keflavik Intl flights
Columbus to Keflavik Intl flights
Birmingham to Keflavik Intl flights

Top 3 airlines flying from Washington to Keflavik Intl

Discover the top 3 airlines that operate flights from Washington to Keflavik Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated enero 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$195Average$996FlexibilityNo cancel feeOn-time75%
DeltaCheapest$323Average$573FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$391Average$793FlexibilityNo cancel feeOn-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.