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Cheap flights from Great Falls to Reykjavik from $851

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to Reykjavik departing on 10/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Great Falls to Reykjavik

Cheap round-trip flights

Logo
7:00 am - 1:05 pmGTF-KEF
24h 05m3 stops
Logo
12:25 am - 9:11 pmKEF-GTF
26h 46m2 stops
$851
Find Deal
Fri, Oct 10 - Wed, Oct 15
Logo
6:15 pm - 6:15 amGTF-KEF
30h 00m1 stop
Logo
4:50 pm - 5:35 pmKEF-GTF
30h 45m1 stop
$906
Find Deal
Fri, Oct 10 - Thu, Oct 16
Logo
6:15 pm - 6:15 amGTF-KEF
30h 00m1 stop
Logo
5:00 pm - 5:35 pmKEF-GTF
30h 35m2 stops
$1,067
Find Deal
Fri, Oct 10 - Thu, Oct 16
United Airlines Logo
2:31 pm - 8:10 amGTF-KEF
35h 39m2 stops
United Airlines Logo
9:50 am - 1:26 pmKEF-GTF
33h 36m2 stops
$1,160United Airlines
Find Deal
Fri, Sep 26 - Thu, Oct 2
United Airlines Logo
7:00 am - 8:15 amGTF-KEF
19h 15m3 stops
United Airlines Logo
9:50 am - 1:26 pmKEF-GTF
33h 36m2 stops
$1,174United Airlines
Find Deal
Fri, Sep 26 - Thu, Oct 2
Logo
10:21 pm - 6:15 amGTF-KEF
25h 54m3 stops
Logo
5:00 pm - 9:37 pmKEF-GTF
34h 37m3 stops
$1,248
Find Deal
Fri, Sep 26 - Thu, Oct 2
Logo
6:15 pm - 9:30 amGTF-KEF
33h 15m2 stops
Logo
10:30 am - 5:35 pmKEF-GTF
37h 05m2 stops
$1,344
Find Deal
Fri, Oct 10 - Thu, Oct 16
Logo
7:00 am - 8:15 amGTF-KEF
19h 15m2 stops
Logo
12:25 am - 9:11 pmKEF-GTF
26h 46m2 stops
$1,353
Find Deal
Fri, Sep 26 - Wed, Oct 1
Logo
7:00 am - 8:15 amGTF-KEF
19h 15m3 stops
Logo
12:25 am - 9:11 pmKEF-GTF
26h 46m2 stops
$1,357
Find Deal
Fri, Sep 26 - Wed, Oct 1
Icelandair Logo
4:29 pm - 9:25 amGTF-KEF
10h 56m1 stop
Icelandair Logo
7:45 pm - 3:49 pmKEF-GTF
26h 04m1 stop
$1,498Icelandair
Find Deal
Fri, Sep 26 - Thu, Oct 2

United Airlines flights from Great Falls to Reykjavik Keflavik Intl Airport

Our best United Airlines deals on Great Falls to Reykjavik Keflavik Intl Airport flight tickets
United Airlines
Sep 26
GTF2:31 pmGreat Falls
35h 39m
2 stops
KEF8:10 amReykjavik Keflavik Intl
Oct 2
KEF9:50 amReykjavik Keflavik Intl
33h 36m
2 stops
GTF1:26 pmGreat Falls
$1,160
Find similar
United Airlines
Sep 26
GTF7:00 amGreat Falls
19h 15m
3 stops
KEF8:15 amReykjavik Keflavik Intl
Oct 2
KEF9:50 amReykjavik Keflavik Intl
33h 36m
2 stops
GTF1:26 pmGreat Falls
$1,174
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to Reykjavik Keflavik Intl Airport 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, momondo users made 832,500 searches. Data last updated August 25, 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

Fly to

Route

Depart

Return

Price

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 10/10

7:00 am-1:05 pm

3 stops24h 05m

Reykjavik Keflavik Intl

Wed 10/15

12:25 am-9:11 pm

2 stops26h 46m

$851

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 10/10

6:15 pm-6:15 am

1 stop30h 00m

Reykjavik Keflavik Intl

Thu 10/16

4:50 pm-5:35 pm

1 stop30h 45m

$906

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 10/10

6:15 pm-6:15 am

1 stop30h 00m

Reykjavik Keflavik Intl

Thu 10/16

5:00 pm-5:35 pm

2 stops30h 35m

$1,067

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

2:31 pm-8:10 am

2 stops35h 39m

Reykjavik Keflavik Intl

Thu 10/2

9:50 am-1:26 pm

2 stops33h 36m

$1,160

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

7:00 am-8:15 am

3 stops19h 15m

Reykjavik Keflavik Intl

Thu 10/2

9:50 am-1:26 pm

2 stops33h 36m

$1,174

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

10:21 pm-6:15 am

3 stops25h 54m

Reykjavik Keflavik Intl

Thu 10/2

5:00 pm-9:37 pm

3 stops34h 37m

$1,248

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 10/10

6:15 pm-9:30 am

2 stops33h 15m

Reykjavik Keflavik Intl

Thu 10/16

10:30 am-5:35 pm

2 stops37h 05m

$1,344

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

7:00 am-8:15 am

2 stops19h 15m

Reykjavik Keflavik Intl

Wed 10/1

12:25 am-9:11 pm

2 stops26h 46m

$1,353

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

7:00 am-8:15 am

3 stops19h 15m

Reykjavik Keflavik Intl

Wed 10/1

12:25 am-9:11 pm

2 stops26h 46m

$1,357

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/26

4:29 pm-9:25 am

1 stop10h 56m

Reykjavik Keflavik Intl

Thu 10/2

7:45 pm-3:49 pm

1 stop26h 04m

$1,498

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Great Falls to Reykjavik Keflavik Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Great Falls to Reykjavik Keflavik Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Great Falls to Reykjavik Keflavik Intl Airport (GTF to KEF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to Reykjavik Keflavik Intl Airport

Direct flights

None
There are no direct flights from Great Falls to Reykjavik Keflavik Intl Airport. There are no popular flight routes from Great Falls to Reykjavik Keflavik Intl Airport.
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  • How far is Great Falls to Reykjavik Keflavik Intl by plane?

    Great Falls and Reykjavik Keflavik Intl are 3313.1 mi apart from one another. By plane, this route typically takes 10h 56m.

  • When did momondo last update prices for flights from Great Falls Airport to Reykjavik Keflavik Intl Airport?

    Prices for flights from Great Falls Airport to Reykjavik Keflavik Intl Airport are updated daily.

  • How old do you have to be to fly from Great Falls Airport to Reykjavik Keflavik Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Great Falls Airport to Reykjavik Keflavik Intl Airport.

  • What documentation or ID do you need to fly to Reykjavik Keflavik Intl Airport?

    The necessary travel and health documents for your Reykjavik Keflavik Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • How do I get Price Alerts for flights from Great Falls to Reykjavik Keflavik Intl Airport?

    Confirm your travel details to search for the latest offers for flights from Great Falls to Reykjavik Keflavik Intl Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Great Falls to Reykjavik Keflavik Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Traveling to a place near Reykjavik?

Book flights to Reykjavik if you plan to visit one of these locations
Keflavik
Hveragerdi
Selfoss
Hella
Borgarnes
Kopavogur
Grindavik

Why use momondo?

Why should I use momondo to find a flight deal from Great Falls to Reykjavik?

Finding the right flight to Reykjavik from Great Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Reykjavik quick and easy, saving you time and money.

Can I find flights from Great Falls to Reykjavik with flexible booking policies on momondo?

Yes. All flights to Reykjavik from Great Falls on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Great Falls to Reykjavik?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Great Falls to Reykjavik.

I’m not ready to book a flight from Great Falls to Reykjavik right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Great Falls to Reykjavik flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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