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Keflavik Intl

$522+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — KEF
nov. 29 — dic. 61
sáb. 11/29
sáb. 12/6
1 adult, Economy
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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 octubre 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/30. 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. 12/85:45 amBOI - KEF
1 stop17h 30mMultiple Airlines
lun. 12/154:50 pmKEF - BOI
1 stop14h 05mMultiple Airlines
Deal found 10/30$672
This Trip.com deal was found by Cheapflights users on 10/30. 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.
lun. 12/89:00 amGEG - KEF
1 stop13h 15mMultiple Airlines
lun. 12/155:00 pmKEF - GEG
1 stop15h 24mMultiple Airlines
Deal found 10/30$725
This Finnair deal was found by Cheapflights users on 10/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/245:25 amGEG - KEF
2 stops43h 50mMultiple Airlines
lun. 12/110:00 amKEF - GEG
2 stops40h 45mMultiple Airlines
Deal found 10/28$893
This Expedia deal was found by Cheapflights users on 10/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:05 pmBOI - KEF
2 stops37h 10mMultiple Airlines
dom. 11/163:20 pmKEF - BOI
2 stops38h 00mMultiple Airlines
Deal found 10/30$946
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/81:04 pmJAC - KEF
2 stops38h 46mAmerican Airlines
lun. 12/1511:50 amKEF - JAC
2 stops31h 24mAmerican Airlines
Deal found 10/30$962
This Ovago deal was found by Cheapflights users on 10/30. 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.
vie. 11/712:45 pmBOI - KEF
2 stops27h 50mLufthansa
vie. 11/143:25 pmKEF - BOI
2 stops37h 11mLufthansa
Deal found 10/30$1,063
This Travelocity deal was found by Cheapflights users on 10/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/712:45 pmBOI - KEF
2 stops27h 50mMultiple Airlines
vie. 11/143:25 pmKEF - BOI
2 stops31h 52mMultiple Airlines
Deal found 10/29$1,114
This Alaska Airlines deal was found by Cheapflights users on 10/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/74:06 pmBOI - KEF
1 stop31h 09mAlaska Airlines
vie. 11/144:50 pmKEF - BOI
1 stop14h 09mAlaska Airlines
Deal found 10/29$1,155
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/249:09 pmGEG - KEF
1 stop25h 06mAlaska Airlines
lun. 12/14:50 pmKEF - GEG
1 stop14h 11mAlaska Airlines
Deal found 10/28$1,189
This United Airlines deal was found by Cheapflights users on 10/29. 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.
sáb. 12/135:00 amGEG - KEF
3 stops25h 20mMultiple Airlines
sáb. 12/202:20 pmKEF - GEG
2 stops40h 10mMultiple Airlines
Deal found 10/29$1,417

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 octubre 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$672
(Kiwi.com)

One-way from

$522
(KAYAK)

Popular in

December

Cheapest in

November
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Reykjavik (REK) flights.
Search Deals
From Idaho to Reykjavik Keflavik Intl
Search Deals
One-way flight from Idaho to Reykjavik Keflavik Intl
Search Deals
High demand for flights, 9% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($29 potential savings vs. average RT price).
Search Deals

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 octubre 30, 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

lun. 12/8

5:45 am-6:15 am

1 stop17h 30m

Reykjavik Keflavik Intl

lun. 12/15

4:50 pm-11:55 pm

1 stop14h 05m

$672

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

mar. 3/31

6:01 am-4:25 pm

2 stops27h 24m

Reykjavik Keflavik Intl

vie. 4/10

8:35 am-8:34 pm

2 stops42h 59m

$692

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

lun. 12/8

9:00 am-6:15 am

1 stop13h 15m

Reykjavik Keflavik Intl

lun. 12/15

5:00 pm-12:24 am

1 stop15h 24m

$725

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

lun. 4/20

1:00 pm-9:40 am

2 stops38h 40m

Reykjavik Keflavik Intl

vie. 4/24

7:40 am-11:04 pm

2 stops21h 24m

$772

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

lun. 11/24

5:25 am-9:15 am

2 stops43h 50m

Reykjavik Keflavik Intl

lun. 12/1

10:00 am-6:45 pm

2 stops40h 45m

$893

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

lun. 4/20

6:30 am-9:25 am

1 stop20h 55m

Reykjavik Keflavik Intl

vie. 4/24

4:50 pm-11:52 pm

1 stop13h 02m

$946

SpokaneReykjavik

GEG - KEF

GEGKEF

Spokane

mié. 1/14

12:10 pm-6:15 am

1 stop10h 05m

Reykjavik Keflavik Intl

sáb. 1/17

5:00 pm-11:04 pm

1 stop14h 04m

$958

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

jue. 4/9

1:25 pm-7:50 am

2 stops36h 25m

Reykjavik Keflavik Intl

dom. 4/12

5:10 pm-9:07 pm

2 stops33h 57m

$960

JacksonReykjavik

JAC - KEF

JACKEF

Jackson Hole

lun. 12/8

1:04 pm-10:50 am

2 stops38h 46m

Reykjavik Keflavik Intl

lun. 12/15

11:50 am-12:14 pm

2 stops31h 24m

$962

BoiseReykjavik

BOI - KEF

BOIKEF

Boise Air Term. Gowen Fld

jue. 4/9

2:11 pm-11:30 pm

3 stops27h 19m

Reykjavik Keflavik Intl

sáb. 4/11

1:15 am-9:08 pm

2 stops25h 53m

$991

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 16 results
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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 octubre 30, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 16% on flights from Idaho to Reykjavik Keflavik Intl Airport by exploring options for tickets in the afternoon.

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

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.

  • How long is the flight from Idaho to Reykjavik Keflavik Intl Airport?

    Airlines like Scandinavian Airlines and American Airlines fly from Idaho to Reykjavik Keflavik Intl Airport in about 38h 40m. The time it takes to get you to your destination can typically vary by up to 06m. There are 3672 mi between Idaho and Reykjavik Keflavik Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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.

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 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 octubre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$676Average$1,071FlexibilityNo cancel feeOn-time76%

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