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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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — KEF
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Round-trip from

$520
(Mytrip)

One-way from

$247
(Justfly.com)

Good round-trip deal

$560 or less

Good one-way deal

$271 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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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 April 2, 2025.

This Mytrip deal was found by Cheapflights users on 4/1. 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.
Thu 6/267:05 amSEA - KEF
1 stop18h 10mWestJet
Fri 7/49:35 amKEF - SEA
1 stop16h 03mWestJet
Deal found 4/1$520
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Fri 5/97:00 pmSEA - KEF
Nonstop7h 25mIcelandair
Fri 5/164:50 pmKEF - SEA
Nonstop8h 00mIcelandair
Deal found 4/1$521
This Scandinavian Airlines deal was found by Cheapflights users on 4/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/74:00 pmSEA - KEF
1 stop17h 45mScandinavian Airlines
Sat 6/145:10 pmKEF - SEA
1 stop27h 40mScandinavian Airlines
Deal found 4/1$524
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Thu 6/265:35 amSEA - KEF
3 stops19h 40mMultiple Airlines
Fri 7/49:35 amKEF - SEA
1 stop16h 03mMultiple Airlines
Deal found 4/1$546
This Delta deal was found by Cheapflights users on 4/1. 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.
Sat 10/47:20 amSEA - KEF
1 stop19h 10mDelta
Sun 10/128:50 amKEF - SEA
1 stop16h 51mDelta
Deal found 4/1$561
This KLM deal was found by Cheapflights users on 4/1. 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 9/309:50 amSEA - KEF
1 stop13h 30mKLM
Sun 10/58:50 amKEF - SEA
2 stops20h 33mKLM
Deal found 4/1$566
This Mytrip deal was found by Cheapflights users on 4/1. 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.
Mon 5/125:40 pmPDX - KEF
2 stops28h 10mMultiple Airlines
Sat 5/179:35 amKEF - PDX
2 stops20h 20mMultiple Airlines
Deal found 4/1$577
This Aeromexico deal was found by Cheapflights users on 4/1. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/17:23 amSEA - KEF
1 stop19h 07mAir France
Thu 5/811:25 amKEF - SEA
2 stops19h 22mAir France
Deal found 4/1$629
This FlightHub deal was found by Cheapflights users on 4/1. 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.
Tue 11/182:45 pmPDX - KEF
Nonstop7h 30mIcelandair
Sun 11/234:50 pmKEF - PDX
Nonstop8h 10mIcelandair
Deal found 4/1$647
This Delta deal was found by Cheapflights users on 4/1. 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.
Mon 10/67:00 amPDX - KEF
1 stop19h 30mDelta
Fri 10/1711:25 amKEF - PDX
1 stop19h 04mDelta
Deal found 4/1$664
This Air France deal was found by Cheapflights users on 4/1. 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.
Mon 4/217:00 amPDX - KEF
1 stop19h 30mAir France
Mon 4/2811:25 amKEF - PDX
2 stops17h 44mAir France
Deal found 4/1$667
This KLM deal was found by Cheapflights users on 4/1. 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.
Mon 10/67:00 amPDX - KEF
1 stop19h 30mKLM
Fri 10/178:50 amKEF - PDX
2 stops21h 58mKLM
Deal found 4/1$669

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 2, 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

Thu 6/26

7:05 am-8:15 am

1 stop18h 10m

Reykjavik Keflavik Intl

Fri 7/4

9:35 am-6:38 pm

1 stop16h 03m

$520

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Fri 5/9

7:00 pm-9:25 am

Nonstop7h 25m

Reykjavik Keflavik Intl

Fri 5/16

4:50 pm-5:50 pm

Nonstop8h 00m

$521

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sat 6/7

4:00 pm-4:45 pm

1 stop17h 45m

Reykjavik Keflavik Intl

Sat 6/14

5:10 pm-1:50 pm

1 stop27h 40m

$524

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 6/26

5:35 am-8:15 am

3 stops19h 40m

Reykjavik Keflavik Intl

Fri 7/4

9:35 am-6:38 pm

1 stop16h 03m

$546

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 9/14

7:20 am-9:30 am

1 stop19h 10m

Reykjavik Keflavik Intl

Wed 10/1

8:50 am-6:41 pm

1 stop16h 51m

$561

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Sun 9/14

9:50 am-6:20 am

1 stop13h 30m

Reykjavik Keflavik Intl

Wed 10/1

8:50 am-10:23 pm

2 stops20h 33m

$566

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

Mon 5/12

5:40 pm-4:50 am

2 stops28h 10m

Reykjavik Keflavik Intl

Sat 5/17

9:35 am-10:55 pm

2 stops20h 20m

$577

SeattleReykjavik

SEA - KEF

SEAKEF

Seattle/Tacoma Intl

Thu 5/1

7:23 am-9:30 am

1 stop19h 07m

Reykjavik Keflavik Intl

Thu 5/8

11:25 am-11:47 pm

2 stops19h 22m

$629

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

Mon 4/21

7:00 am-9:30 am

1 stop19h 30m

Reykjavik Keflavik Intl

Mon 4/28

11:25 am-10:09 pm

2 stops17h 44m

$667

PortlandReykjavik

PDX - KEF

PDXKEF

Portland

Fri 9/19

3:20 pm-5:55 am

Nonstop7h 35m

Reykjavik Keflavik Intl

Sun 9/28

4:50 pm-5:55 pm

Nonstop8h 05m

$675

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

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 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 2, 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 2, 2025.

The most flights from USWA to KEF are scheduled on a Monday (4 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (1 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 2, 2025.
Read through reviews of airlines operating flights from Washington to Reykjavik, such as Alaska Airlines, Delta and KLM. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,820 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,898 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
KLM
7.8
Good
1,323 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Air France
7.4
Good
1,425 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,615 reviews
Alaska Airlines
8.0
Very good
9,820 reviews

Overall

8.0

Food

7.1

Boarding

8.2

Comfort

7.9

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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?

    $247 is the cheapest one-way deal found within the past few days, from WestJet. You may also be able to find cheap deals on Icelandair and KLM, with prices starting from $390 and $549, respectively.

  • 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 (82%), Icelandair (82%) or airBaltic (78%) 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 $1,739 for a flight from State of Washington to Reykjavik Keflavik Intl Airport. The cheapest flight overall is $195 while the most popular route, (Seattle/Tacoma Intl - Reykjavik Keflavik Intl) is currently priced at $512.

  • 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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Alternative routes for Washington to Keflavik Intl

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Top 4 airlines flying from Washington to Keflavik Intl

Discover the top 4 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 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$417Average$564FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$454Average$497FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$485Average$613FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$550Average$886FlexibilityNo cancel feeOn-time76%

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