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Keflavik Intl

$631+ Cheap flights from Great Falls (GTF) 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
GTF — KEF
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Great Falls to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from Great Falls (GTF) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.

Round-trip from

$631
(United Airlines)
From Great Falls to Reykjavik Keflavik Intl
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Find flight deals from Great Falls to Keflavik Intl

Cheapest flights from Great Falls to Keflavik Intl
Explore the most affordable flight options available from Great Falls to Keflavik Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This United Airlines deal was found by Cheapflights users on 7/2. 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 8/227:00 amGTF - KEF
2 stops19h 20mUnited Airlines
Tue 8/269:50 amKEF - GTF
2 stops33h 47mUnited Airlines
Deal found 7/2$631
This Delta deal was found by Cheapflights users on 7/3. 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.
Thu 9/46:00 amGTF - KEF
1 stop19h 00mDelta
Tue 9/168:45 amKEF - GTF
2 stops19h 43mDelta
Deal found 7/3$732
This United deal was found by Cheapflights users on 7/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:00 amGTF - KEF
2 stops19h 10mMultiple Airlines
Mon 9/1512:25 amKEF - GTF
2 stops27h 03mMultiple Airlines
Deal found 7/3$1,110
This KLM deal was found by Cheapflights users on 7/2. 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 8/226:06 pmGTF - KEF
2 stops30h 54mKLM
Tue 8/269:30 amKEF - GTF
1 stop17h 04mKLM
Deal found 7/2$1,574

Cheapflights Fare Finder

Customize your flight search to find flights from Great Falls 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 July 3, 2025.
Use the filters below to find and compare flights from Great Falls to Reykjavik Keflavik Intl Airport that are best for you.

Fly from

Great Falls

Fly to

Keflavik Intl

Route

Depart

Return

Price

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 8/22

7:00 am-8:20 am

2 stops19h 20m

Reykjavik Keflavik Intl

Tue 8/26

9:50 am-1:37 pm

2 stops33h 47m

$631

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Thu 9/4

6:00 am-7:00 am

1 stop19h 00m

Reykjavik Keflavik Intl

Tue 9/16

8:45 am-10:28 pm

2 stops19h 43m

$732

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Thu 9/4

7:00 am-8:10 am

2 stops19h 10m

Reykjavik Keflavik Intl

Mon 9/15

12:25 am-9:28 pm

2 stops27h 03m

$1,110

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 8/22

6:06 pm-7:00 am

2 stops30h 54m

Reykjavik Keflavik Intl

Tue 8/26

9:30 am-8:34 pm

1 stop17h 04m

$1,574

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Best time to book a flight from Great Falls to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from Great Falls 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.

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 July 3, 2025.
Peruse reviews from past customers who have flown with Delta, KLM, and United Airlines from Great Falls to Reykjavik Keflavik Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews

Comfort

7.9

Food

7.3

Overall

8.0

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Great Falls 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 airport do you fly from for flights from Great Falls to Reykjavik Keflavik Intl?

    For a flight from Great Falls to Reykjavik Keflavik Intl, you will be flying from Great Falls. Great Falls (GTF) is just 3.5 mi from the center of the city. Great Falls is the only Great Falls airport and it handles 0 outbound flights to Reykjavik Keflavik Intl per day. 0 airlines have flights to Reykjavik Keflavik Intl from Great Falls on a regular basis.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Great Falls to Reykjavik Keflavik Intl Airport (average of $328). Flying from Great Falls 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 Great Falls?

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

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