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Keflavik Intl

$646+ Cheap flights from Montana to Keflavik Intl (KEF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/3. Fares are subject to change and may not be available on all flights or dates of travel.
BZN — KEF
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Montana to Keflavik Intl

Best flights from Montana to Keflavik Intl
Discover carefully curated flight deals from Montana to Keflavik Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 16, 2025.

This flugladen.de deal was found by Cheapflights users on 12/14. 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 flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/37:00 amBIL - KEF
1 stop16h 15mMultiple Airlines
Tue 2/105:00 pmKEF - BIL
1 stop28h 55mMultiple Airlines
Deal found 12/14$646
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/127:00 amBZN - KEF
2 stops19h 30mUnited Airlines
Tue 5/1912:00 pmKEF - BZN
1 stop15h 58mUnited Airlines
Deal found 12/14$810
This Ovago deal was found by Cheapflights users on 12/14. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/72:37 pmBZN - KEF
2 stops26h 53mLufthansa
Wed 5/1312:00 pmKEF - BZN
1 stop15h 58mLufthansa
Deal found 12/14$842
This Virgin Atlantic deal was found by Cheapflights users on 12/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/71:45 pmBZN - KEF
1 stop11h 15mVirgin Atlantic
Wed 5/139:30 amKEF - BZN
1 stop20h 23mVirgin Atlantic
Deal found 12/14$896
This Alaska Airlines deal was found by Cheapflights users on 12/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:17 pmMSO - KEF
1 stop12h 33mAlaska Airlines
Fri 6/1212:45 pmKEF - MSO
1 stop17h 34mAlaska Airlines
Deal found 12/14$976
This Delta deal was found by Cheapflights users on 12/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:15 amBIL - KEF
1 stop18h 45mDelta
Mon 6/19:30 amKEF - BIL
1 stop19h 07mDelta
Deal found 12/15$1,053
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/192:40 pmBIL - KEF
2 stops35h 50mUnited Airlines
Mon 6/112:00 pmKEF - BIL
3 stops31h 13mUnited Airlines
Deal found 12/14$892
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/297:20 amBZN - KEF
1 stop15h 55mAlaska Airlines
Thu 2/55:00 pmKEF - BZN
2 stops29h 23mAlaska Airlines
Deal found 12/15$1,008
This Ovago deal was found by Cheapflights users on 12/15. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2910:50 amBZN - KEF
2 stops20h 30mLufthansa
Thu 2/53:10 pmKEF - BZN
2 stops34h 50mLufthansa
Deal found 12/15$1,035
This United Airlines deal was found by Cheapflights users on 12/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/56:15 amMSO - KEF
2 stops20h 30mUnited Airlines
Fri 6/1212:00 pmKEF - MSO
2 stops15h 26mUnited Airlines
Deal found 12/14$1,005
This British Airways deal was found by Cheapflights users on 12/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/211:54 pmFCA - KEF
2 stops38h 01mBritish Airways
Sun 1/255:55 pmKEF - FCA
2 stops37h 03mBritish Airways
Deal found 12/13$2,276
This Alaska Airlines deal was found by Cheapflights users on 12/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:23 amMSO - KEF
1 stop16h 52mAlaska Airlines
Sat 2/285:00 pmKEF - MSO
1 stop13h 59mAlaska Airlines
Deal found 12/15$1,048
This Alaska Airlines deal was found by Cheapflights users on 12/13. 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.
Mon 1/196:23 amMSO - KEF
1 stop16h 52mAlaska Airlines
Fri 1/305:00 pmKEF - MSO
1 stop26h 23mAlaska Airlines
Deal found 12/13$1,056
This United Airlines deal was found by Cheapflights users on 12/13. 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.
Wed 5/2710:00 amBTM - KEF
2 stops16h 30mUnited Airlines
Sun 5/3112:00 pmKEF - BTM
2 stops16h 22mUnited Airlines
Deal found 12/13$1,109
This Trip.com deal was found by Cheapflights users on 12/14. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/226:42 pmFCA - KEF
1 stop29h 33mMultiple Airlines
Sat 3/285:00 pmKEF - FCA
1 stop12h 58mMultiple Airlines
Deal found 12/14$1,621
This Alaska Airlines deal was found by Cheapflights users on 12/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/112:03 pmMSO - KEF
1 stop33h 12mAlaska Airlines
Sun 1/185:00 pmKEF - MSO
2 stops27h 23mAlaska Airlines
Deal found 12/14$1,234
This Alaska Airlines deal was found by Cheapflights users on 12/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/226:42 pmFCA - KEF
2 stops29h 33mAlaska Airlines
Sat 3/287:50 pmKEF - FCA
1 stop28h 01mAlaska Airlines
Deal found 12/14$1,621
This British Airways deal was found by Cheapflights users on 12/13. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/233:03 pmBZN - KEF
2 stops43h 02mBritish Airways
Tue 1/2711:50 amKEF - BZN
2 stops43h 06mBritish Airways
Deal found 12/13$2,464

Find flight deals from Montana to Keflavik Intl

Keep the following information in mind while searching for Montana to Keflavik Intl flight deals. Data was last updated December 16, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$646
(flugladen.de)
Provider with most accurate pricing for Bozeman Gallatin Field-Reykjavik (REK) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bozeman Gallatin Field-Reykjavik (REK) flights.
Search Deals
From Montana to Reykjavik Keflavik Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Montana 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 December 16, 2025.
Use the filters below to find and compare flights from Montana to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Montana

Fly to

Keflavik Intl

Route

Depart

Return

Price

BillingsReykjavik

BIL - KEF

BILKEF

Billings Logan Intl

Tue 2/3

7:00 am-6:15 am

1 stop16h 15m

Reykjavik Keflavik Intl

Tue 2/10

5:00 pm-2:55 pm

1 stop28h 55m

$646

BozemanReykjavik

BZN - KEF

BZNKEF

Bozeman Gallatin Field

Tue 5/12

7:00 am-8:30 am

2 stops19h 30m

Reykjavik Keflavik Intl

Tue 5/19

12:00 pm-9:58 pm

1 stop15h 58m

$810

BozemanReykjavik

BZN - KEF

BZNKEF

Bozeman Gallatin Field

Thu 5/7

2:37 pm-11:30 pm

2 stops26h 53m

Reykjavik Keflavik Intl

Wed 5/13

12:00 pm-9:58 pm

1 stop15h 58m

$842

BillingsReykjavik

BIL - KEF

BILKEF

Billings Logan Intl

Tue 5/19

2:40 pm-8:30 am

2 stops35h 50m

Reykjavik Keflavik Intl

Mon 6/1

12:00 pm-1:13 pm

3 stops31h 13m

$892

BozemanReykjavik

BZN - KEF

BZNKEF

Bozeman Gallatin Field

Thu 5/7

1:45 pm-7:00 am

1 stop11h 15m

Reykjavik Keflavik Intl

Wed 5/13

9:30 am-11:53 pm

1 stop20h 23m

$896

MissoulaReykjavik

MSO - KEF

MSOKEF

Missoula Johnson-Bell Field

Fri 6/5

3:17 pm-9:50 am

1 stop12h 33m

Reykjavik Keflavik Intl

Fri 6/12

12:45 pm-12:19 am

1 stop17h 34m

$976

MissoulaReykjavik

MSO - KEF

MSOKEF

Missoula Johnson-Bell Field

Fri 6/5

6:15 am-8:45 am

2 stops20h 30m

Reykjavik Keflavik Intl

Fri 6/12

12:00 pm-9:26 pm

2 stops15h 26m

$1,005

BozemanReykjavik

BZN - KEF

BZNKEF

Bozeman Gallatin Field

Thu 1/29

7:20 am-6:15 am

1 stop15h 55m

Reykjavik Keflavik Intl

Thu 2/5

5:00 pm-3:23 pm

2 stops29h 23m

$1,008

BozemanReykjavik

BZN - KEF

BZNKEF

Bozeman Gallatin Field

Thu 1/29

10:50 am-2:20 pm

2 stops20h 30m

Reykjavik Keflavik Intl

Thu 2/5

3:10 pm-7:00 pm

2 stops34h 50m

$1,035

MissoulaReykjavik

MSO - KEF

MSOKEF

Missoula Johnson-Bell Field

Fri 2/20

6:23 am-6:15 am

1 stop16h 52m

Reykjavik Keflavik Intl

Sat 2/28

5:00 pm-11:59 pm

1 stop13h 59m

$1,048

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 18 results
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Best time to book a flight from Montana to Keflavik Intl

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

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

Find hourly flight availability from Montana 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 December 16, 2025.

A simple way to save on the total cost of your ticket is to fly from Montana to Reykjavik Keflavik Intl Airport in the evening. If you’re flexible enough to do this you can expect to save up to 29% on your trip compared to booking a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from Montana 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 Montana to Reykjavik Keflavik Intl Airport?

    There are many flights that can get you from Montana to Reykjavik Keflavik Intl Airport in 12h 33m. Fly via United Airlines or Alaska Airlines to get the fastest option. The distance between Montana and Reykjavik Keflavik Intl Airport is about 3422 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the most popular routes from Montana to Reykjavik Keflavik Intl Airport?

    The most popular route from Montana to Reykjavik Keflavik Intl Airport is Billings Logan Intl - Reykjavik Keflavik Intl. You may also consider Bozeman Gallatin Field - Reykjavik Keflavik Intl or Missoula Johnson-Bell Field - Reykjavik Keflavik Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Montana 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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Alternative routes for Montana to Keflavik Intl

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