Keflavik Intl

$242+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
Apr 29 — May 61
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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 April 24, 2025.

Round-trip from

$511
(Trip.com)

One-way from

$243
(Trip.com)

Good round-trip deal

$525 or less

Good one-way deal

$264 or less
From Washington to Reykjavik Keflavik Intl
One-way flight from Washington to Reykjavik Keflavik Intl
Price to beat on a round-trip flight from Washington to Reykjavik Keflavik Intl.
Price to beat on a one-way flight from Washington to Reykjavik Keflavik Intl.

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 April 24, 2025.

This Trip.com deal was found by Cheapflights users on 4/22. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/207:05 amSEA - KEF
1 stop18h 10mWestJet
Wed 7/309:35 amKEF - SEA
1 stop16h 03mWestJet
Deal found 4/22$511
This Gotogate deal was found by Cheapflights users on 4/23. 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.
Wed 10/13:45 pmSEA - KEF
Nonstop7h 30mIcelandair
Sun 10/127:45 pmKEF - SEA
Nonstop7h 55mIcelandair
Deal found 4/23$513
This AirNGo deal was found by Cheapflights users on 4/22. 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.
Tue 4/299:45 pmSEA - KEF
2 stops28h 45mVirgin Atlantic
Sun 5/411:25 amKEF - SEA
1 stop15h 38mVirgin Atlantic
Deal found 4/22$534
This Delta deal was found by Cheapflights users on 4/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1211:15 amSEA - KEF
1 stop15h 15mDelta
Sun 10/1911:25 amKEF - SEA
1 stop18h 23mDelta
Deal found 4/23$560
This KLM deal was found by Cheapflights users on 4/23. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/39:50 amSEA - KEF
1 stop13h 30mKLM
Tue 6/109:30 amKEF - SEA
1 stop13h 47mKLM
Deal found 4/23$566
This Air France deal was found by Cheapflights users on 4/23. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/148:25 amSEA - KEF
2 stops14h 55mAir France
Sun 10/1911:25 amKEF - SEA
1 stop18h 23mAir France
Deal found 4/23$567
This FlightHub deal was found by Cheapflights users on 4/23. 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.
Sun 9/214:20 pmSEA - KEF
1 stop17h 00mScandinavian Airlines
Tue 9/305:10 pmKEF - SEA
1 stop27h 50mScandinavian Airlines
Deal found 4/23$568
This Flighttix deal was found by Cheapflights users on 4/22. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/297:23 amSEA - KEF
1 stop19h 07mMultiple Airlines
Sun 5/411:25 amKEF - SEA
1 stop15h 38mMultiple Airlines
Deal found 4/22$578
This Mytrip deal was found by Cheapflights users on 4/23. 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.
Sun 6/17:40 pmPDX - KEF
2 stops29h 35mMultiple Airlines
Sat 6/79:35 amKEF - PDX
3 stops16h 10mMultiple Airlines
Deal found 4/23$588
This FlightHub deal was found by Cheapflights users on 4/24. 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.
Wed 9/173:20 pmPDX - KEF
Nonstop7h 35mIcelandair
Thu 9/254:50 pmKEF - PDX
Nonstop8h 05mIcelandair
Deal found 4/24$594
This Justfly.com deal was found by Cheapflights users on 4/23. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/167:15 pmSEA - KEF
2 stops30h 00mAir Canada
Sun 8/249:30 amKEF - SEA
1 stop18h 11mAir Canada
Deal found 4/23$613
This United Airlines deal was found by Cheapflights users on 4/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:00 amSEA - KEF
2 stops18h 15mUnited Airlines
Tue 8/2611:00 amKEF - SEA
2 stops16h 42mUnited Airlines
Deal found 4/23$632

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 April 24, 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

Sun 7/20

7:05 am-8:15 am

1 stop18h 10m

Reykjavik Keflavik Intl

Wed 7/30

9:35 am-6:38 pm

1 stop16h 03m

$511

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Wed 10/1

3:45 pm-6:15 am

Nonstop7h 30m

Reykjavik Keflavik Intl

Sun 10/12

7:45 pm-8:40 pm

Nonstop7h 55m

$513

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 10/12

11:15 am-9:30 am

1 stop15h 15m

Reykjavik Keflavik Intl

Sun 10/19

11:25 am-10:48 pm

1 stop18h 23m

$560

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 6/3

9:50 am-6:20 am

1 stop13h 30m

Reykjavik Keflavik Intl

Tue 6/10

9:30 am-4:17 pm

1 stop13h 47m

$566

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Tue 10/14

8:25 am-6:20 am

2 stops14h 55m

Reykjavik Keflavik Intl

Sun 10/19

11:25 am-10:48 pm

1 stop18h 23m

$567

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 9/21

4:20 pm-4:20 pm

1 stop17h 00m

Reykjavik Keflavik Intl

Tue 9/30

5:10 pm-2:00 pm

1 stop27h 50m

$568

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 6/21

2:55 pm-8:15 am

2 stops34h 20m

Reykjavik Keflavik Intl

Sat 6/28

9:35 am-2:09 pm

2 stops35h 34m

$578

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

Sun 6/1

7:40 pm-8:15 am

2 stops29h 35m

Reykjavik Keflavik Intl

Sat 6/7

9:35 am-6:45 pm

3 stops16h 10m

$588

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

Wed 9/17

3:20 pm-5:55 am

Nonstop7h 35m

Reykjavik Keflavik Intl

Thu 9/25

4:50 pm-5:55 pm

Nonstop8h 05m

$594

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 8/16

7:15 pm-8:15 am

2 stops30h 00m

Reykjavik Keflavik Intl

Sun 8/24

9:30 am-8:41 pm

1 stop18h 11m

$613

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 54 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 July is currently the most expensive (average of $651). 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 April 24, 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 April 24, 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).

Rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Reykjavik Keflavik Intl Airport ranges from 1.6 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. May is typically the driest time to visit Reykjavik Keflavik Intl Airport when rainfall is around 1.6 in.

Temperature in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Reykjavik Keflavik Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 51.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Keflavik Intl. Reviews last updated April 24, 2025.
Read through reviews of airlines operating flights from Washington to Reykjavik, such as Delta, Alaska Airlines and KLM. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.
  • What are the cheapest airlines to fly from State of Washington to Reykjavik Keflavik Intl Airport one-way?

    $243 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on United Airlines and Icelandair, with prices starting from $461 and $482, respectively.

  • What are the most popular routes 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 airBaltic (100%), Alaska Airlines (85%) or Icelandair (85%) 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 $1,491 for a flight from State of Washington to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $184 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at $501.

  • 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 July is currently the most expensive (average of $651). 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.

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Keflavik

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Alternative routes for Washington to Keflavik Intl

See prices for flight routes from nearby airports that may be better suited for you.

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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$417Average$612FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$454Average$497FlexibilityNo cancel feeOn-time67%
IcelandairCheapest$528Average$884FlexibilityNo cancel feeOn-time76%

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