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Keflavik Intl

$247+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
oct. 16 — oct. 231
jue. 10/16
jue. 10/23
1 adult, Economy
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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 septiembre 16, 2025.

Round-trip from

$372
(Ticket)

One-way from

$247
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$613

Good round-trip deal

$464 or less

Good one-way deal

$406 or less
From Washington to Reykjavik Keflavik Intl
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One-way flight from Washington to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 8% potential increase in price ($63 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington to Reykjavik Keflavik Intl.
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Price to beat on a one-way flight from Washington to Reykjavik Keflavik Intl.
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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 septiembre 16, 2025.

This Ticket deal was found by Cheapflights users on 9/14. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/133:20 pmPDX - KEF
Nonstop7h 35mIcelandair
mar. 10/214:50 pmKEF - PDX
Nonstop8h 05mIcelandair
Deal found 9/14$372
This Ticket deal was found by Cheapflights users on 9/16. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/313:35 pmSEA - KEF
Nonstop7h 40mIcelandair
vie. 11/75:00 pmKEF - SEA
Nonstop8h 00mIcelandair
Deal found 9/16$398
This CrystalTravel deal was found by Cheapflights users on 9/15. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/83:45 pmSEA - KEF
Nonstop7h 30mIcelandair
jue. 10/167:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/15$405
This Mytrip deal was found by Cheapflights users on 9/15. 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.
jue. 10/303:35 pmSEA - KEF
Nonstop7h 40mIcelandair
jue. 11/65:00 pmKEF - SEA
Nonstop8h 00mIcelandair
Deal found 9/15$425
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/287:00 pmSEA - KEF
Nonstop7h 25mIcelandair
mar. 10/77:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/14$427
This Mytrip deal was found by Cheapflights users on 9/15. 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. 10/153:45 pmSEA - KEF
Nonstop7h 30mIcelandair
lun. 10/207:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/15$430
This AirNGo deal was found by Cheapflights users on 9/16. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/289:58 pmSEA - KEF
1 stop28h 32mVirgin Atlantic
mar. 10/711:25 amKEF - SEA
2 stops34h 20mVirgin Atlantic
Deal found 9/16$431
This Mytrip deal was found by Cheapflights users on 9/15. 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.
lun. 10/133:45 pmSEA - KEF
Nonstop7h 30mIcelandair
lun. 10/207:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/15$435
This FlightHub deal was found by Cheapflights users on 9/15. 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. 10/63:45 pmSEA - KEF
Nonstop7h 30mIcelandair
mié. 10/157:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/15$437
This FlightHub deal was found by Cheapflights users on 9/14. 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.
jue. 10/233:20 pmPDX - KEF
Nonstop7h 35mIcelandair
mié. 10/294:50 pmKEF - PDX
Nonstop8h 10mIcelandair
Deal found 9/14$437
This Icelandair deal was found by Cheapflights users on 9/15. 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.
dom. 10/53:45 pmSEA - KEF
Nonstop7h 30mIcelandair
mié. 10/157:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 9/15$449
This Icelandair deal was found by Cheapflights users on 9/14. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/32:45 pmPDX - KEF
Nonstop7h 30mIcelandair
lun. 11/174:50 pmKEF - PDX
Nonstop8h 10mIcelandair
Deal found 9/14$449

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 septiembre 16, 2025.
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

vie. 10/31

3:35 pm-6:15 am

Nonstop7h 40m

Reykjavik Keflavik Intl

mié. 11/19

5:00 pm-5:00 pm

Nonstop8h 00m

$449

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

jue. 10/9

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

mié. 10/15

7:45 pm-8:40 pm

Nonstop7h 55m

$449

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

lun. 10/6

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

jue. 10/16

7:45 pm-8:40 pm

Nonstop7h 55m

$449

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

mar. 11/4

2:35 pm-6:15 am

Nonstop7h 40m

Reykjavik Keflavik Intl

vie. 11/14

5:00 pm-5:00 pm

Nonstop8h 00m

$449

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

dom. 10/5

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

jue. 10/16

7:45 pm-8:40 pm

Nonstop7h 55m

$449

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

mar. 11/4

2:45 pm-6:15 am

Nonstop7h 30m

Reykjavik Keflavik Intl

lun. 11/17

4:50 pm-5:00 pm

Nonstop8h 10m

$449

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

mar. 11/4

2:45 pm-6:15 am

Nonstop7h 30m

Reykjavik Keflavik Intl

mié. 11/12

4:50 pm-5:00 pm

Nonstop8h 10m

$477

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

sáb. 10/4

11:40 pm-6:20 am

2 stops23h 40m

Reykjavik Keflavik Intl

mar. 10/14

11:25 am-10:33 am

2 stops30h 08m

$478

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

dom. 10/5

11:40 pm-6:20 am

2 stops23h 40m

Reykjavik Keflavik Intl

lun. 10/13

8:45 am-10:03 pm

1 stop20h 18m

$478

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

dom. 10/5

7:05 pm-6:20 am

2 stops28h 15m

Reykjavik Keflavik Intl

mar. 10/14

11:25 am-8:16 pm

1 stop15h 51m

$478

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 40 results
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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, November is the cheapest month in which you can book a flight from State of Washington to Reykjavik Keflavik Intl Airport (average of $328). Flying from State of Washington to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $656). 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 septiembre 16, 2025.

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 septiembre 16, 2025.

The most flights from USWA to KEF are scheduled on a Monday (4 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 cheapest flights from State of Washington to Reykjavik Keflavik Intl Airport?

    On average you can expect to pay $1,250 for a flight from State of Washington to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $355 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at $405.

  • 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, November is the cheapest month in which you can book a flight from State of Washington to Reykjavik Keflavik Intl Airport (average of $328). Flying from State of Washington to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $656). 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

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Top airline flying from Washington to Keflavik Intl

Discover the top airline 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 septiembre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$396Average$846FlexibilityNo cancel feeOn-time76%

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