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Keflavik Intl

$500+ Cheap flights from Idaho 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — KEF
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
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Cheap flight deals from Idaho to Keflavik Intl

Keep the following information in mind while searching for Idaho to Keflavik Intl flight deals. Data was last updated June 26, 2025.

Round-trip from

$628
(Air Canada)

One-way from

$500
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$1,004
From Idaho to Reykjavik Keflavik Intl
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One-way flight from Idaho to Reykjavik Keflavik Intl
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Highest demand for flights based on searches. 11% potential increase in price ($132 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Idaho to Keflavik Intl

Cheapest flights from Idaho to Keflavik Intl
Explore the most affordable flight options available from Idaho to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 6/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/268:46 pmBOI - KEF
1 stop11h 14mMultiple Airlines
Wed 9/34:50 pmKEF - BOI
1 stop11h 50mMultiple Airlines
Deal found 6/23$557
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/412:39 pmBOI - KEF
1 stop13h 51mUnited Airlines
Tue 8/199:50 amKEF - BOI
2 stops33h 45mUnited Airlines
Deal found 6/24$584
This Air Canada deal was found by Cheapflights users on 6/26. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/1512:39 pmBOI - KEF
2 stops13h 41mAir Canada
Fri 8/229:30 amKEF - BOI
2 stops42h 51mAir Canada
Deal found 6/26$628
This KLM deal was found by Cheapflights users on 6/26. 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.
Fri 8/153:06 pmBOI - KEF
1 stop9h 54mKLM
Fri 8/229:30 amKEF - BOI
1 stop20h 26mKLM
Deal found 6/26$651
This United Airlines deal was found by Cheapflights users on 6/25. 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.
Sat 9/64:00 pmGEG - KEF
2 stops33h 30mUnited Airlines
Wed 9/179:30 amKEF - GEG
2 stops32h 57mUnited Airlines
Deal found 6/25$662
This Delta deal was found by Cheapflights users on 6/25. 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 7/275:40 amBOI - KEF
2 stops18h 40mDelta
Thu 10/2311:25 amKEF - BOI
2 stops55h 13mDelta
Deal found 6/25$686
This Delta deal was found by Cheapflights users on 6/25. 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.
Wed 9/36:50 amGEG - KEF
1 stop17h 10mDelta
Sun 9/79:30 amKEF - GEG
1 stop21h 03mDelta
Deal found 6/25$740
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Fri 9/53:05 pmJAC - KEF
2 stops35h 05mUnited Airlines
Sat 9/139:50 amKEF - JAC
2 stops32h 54mUnited Airlines
Deal found 6/26$774
This Ovago deal was found by Cheapflights users on 6/23. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2612:27 pmBOI - KEF
1 stop14h 03mLufthansa
Tue 9/21:15 amKEF - BOI
2 stops25h 59mLufthansa
Deal found 6/23$776
This Gurufare deal was found by Cheapflights users on 6/24. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/77:21 amBOI - KEF
2 stops26h 54mFinnair
Sat 11/156:00 pmKEF - BOI
2 stops34h 18mFinnair
Deal found 6/24$782
This Air France deal was found by Cheapflights users on 6/24. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:50 amGEG - KEF
1 stop17h 10mAir France
Sun 9/79:30 amKEF - GEG
1 stop21h 03mAir France
Deal found 6/24$792
This Kiwi.com deal was found by Cheapflights users on 6/25. 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.
Thu 7/241:23 pmGEG - KEF
1 stop13h 02mMultiple Airlines
Thu 7/3110:30 amKEF - GEG
1 stop12h 36mMultiple Airlines
Deal found 6/25$828

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho 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 June 26, 2025.
Use the filters below to find and compare flights from Idaho to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Idaho

Fly to

Keflavik Intl

Route

Depart

Return

Price

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Tue 8/26

8:46 pm-2:00 pm

1 stop11h 14m

Reykjavik Keflavik Intl

Wed 9/3

4:50 pm-10:40 pm

1 stop11h 50m

$557

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Mon 8/4

12:39 pm-8:30 am

1 stop13h 51m

Reykjavik Keflavik Intl

Tue 8/19

9:50 am-1:35 pm

2 stops33h 45m

$584

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Fri 8/15

12:39 pm-8:20 am

2 stops13h 41m

Reykjavik Keflavik Intl

Fri 8/22

9:30 am-10:21 pm

2 stops42h 51m

$628

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Fri 8/15

3:06 pm-7:00 am

1 stop9h 54m

Reykjavik Keflavik Intl

Fri 8/22

9:30 am-11:56 pm

1 stop20h 26m

$651

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

Sat 9/6

4:00 pm-8:30 am

2 stops33h 30m

Reykjavik Keflavik Intl

Wed 9/17

9:30 am-11:27 am

2 stops32h 57m

$662

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Sun 7/27

5:40 am-6:20 am

2 stops18h 40m

Reykjavik Keflavik Intl

Thu 10/23

11:25 am-12:38 pm

2 stops55h 13m

$686

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

Wed 9/3

6:50 am-7:00 am

1 stop17h 10m

Reykjavik Keflavik Intl

Sun 9/7

9:30 am-11:33 pm

1 stop21h 03m

$740

JacksonReykjavik

JAC - KEF

JACKEF

Jackson Hole

Fri 9/5

3:05 pm-8:10 am

2 stops35h 05m

Reykjavik Keflavik Intl

Sat 9/13

9:50 am-12:44 pm

2 stops32h 54m

$774

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

Tue 8/26

12:27 pm-8:30 am

1 stop14h 03m

Reykjavik Keflavik Intl

Tue 9/2

1:15 am-9:14 pm

2 stops25h 59m

$776

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

Wed 9/3

6:50 am-7:00 am

1 stop17h 10m

Reykjavik Keflavik Intl

Sun 9/7

9:30 am-11:33 pm

1 stop21h 03m

$792

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/26

Showing 1-10 of 23 results
1
2
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Best time to book a flight from Idaho to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Idaho 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 Idaho to Reykjavik Keflavik Intl Airport

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

Find hourly flight availability from Idaho 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 June 26, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to Reykjavik Keflavik Intl Airport as you normally would.

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 June 26, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and KLM from Idaho to Reykjavik Keflavik Intl Airport by reading reviews from past customers. 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
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
KLM
7.8
Good
1,365 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Finnair
7.6
Good
1,298 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Air France
7.5
Good
1,470 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

Find useful and relevant information for your journey from Idaho 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 most popular routes from Idaho to Reykjavik Keflavik Intl Airport?

    Most travelers choose Boise Air Term. Gowen Fld - Reykjavik Keflavik Intl, Spokane - Reykjavik Keflavik Intl or Jackson Hole - Reykjavik Keflavik Intl when deciding on the best route from Idaho to Reykjavik Keflavik Intl Airport.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho 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 Idaho to Reykjavik Keflavik Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Idaho to Reykjavik Keflavik Intl Airport (average of $328). Flying from Idaho to Reykjavik Keflavik Intl Airport in June is currently the most expensive (average of $653). 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 Idaho?

Book flights to Idaho if you plan to visit one of these locations
Keflavik
Hveragerdi

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Top airline flying from Idaho to Keflavik Intl

Discover the top airline that operate flights from Idaho 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$731Average$1,049FlexibilityNo cancel feeOn-time76%

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