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Cheap flights from Great Falls to Reykjavik from $895

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 9/11. 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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0 bags

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Find the cheapest flights from Great Falls to Reykjavik

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
5:19 pm - 2:00 pm
GTF
-
KEF
14h 41m
1 stop
Icelandair Logo
7:45 pm - 4:39 pm
KEF
-
GTF
26h 54m
1 stop
$895Icelandair
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
6:15 am - 8:30 am
GTF
-
KEF
20h 15m
2 stops
United Airlines Logo
9:15 am - 1:29 pm
KEF
-
GTF
34h 14m
2 stops
$1,038United Airlines
Fri, Sep 11 - Fri, Sep 18
United Airlines Logo
6:15 am - 8:50 am
GTF
-
KEF
20h 35m
2 stops
United Airlines Logo
10:00 am - 9:21 pm
KEF
-
GTF
41h 21m
2 stops
$1,043United Airlines
Fri, Sep 25 - Tue, Sep 29
United Airlines Logo
6:15 am - 7:00 am
GTF
-
KEF
18h 45m
2 stops
United Airlines Logo
9:15 am - 9:12 pm
KEF
-
GTF
17h 57m
3 stops
$1,062United Airlines
Fri, Sep 11 - Fri, Sep 18
Alaska Airlines Logo
5:19 pm - 2:00 pm
GTF
-
KEF
14h 41m
1 stop
Alaska Airlines Logo
4:50 pm - 4:39 pm
KEF
-
GTF
29h 49m
2 stops
$1,131Alaska Airlines
Fri, Sep 11 - Fri, Sep 18

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 11
GTF6:15 amGreat Falls
20h 15m
2 stops
KEF8:30 amReykjavik Keflavik Intl
Sep 18
KEF9:15 amReykjavik Keflavik Intl
34h 14m
2 stops
GTF1:29 pmGreat Falls
$1,038
United Airlines
Sep 25
GTF6:15 amGreat Falls
20h 35m
2 stops
KEF8:50 amReykjavik Keflavik Intl
Sep 29
KEF10:00 amReykjavik Keflavik Intl
41h 21m
2 stops
GTF9:21 pmGreat Falls
$1,043
United Airlines
Sep 11
GTF6:15 amGreat Falls
18h 45m
2 stops
KEF7:00 amReykjavik Keflavik Intl
Sep 18
KEF9:15 amReykjavik Keflavik Intl
17h 57m
3 stops
GTF9:12 pmGreat Falls
$1,062

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 May 27, 2026.
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

Cheapest round-trip

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/11

5:19 pm-2:00 pm

1 stop14h 41m

Reykjavik Keflavik Intl

Fri 9/18

7:45 pm-4:39 pm

1 stop26h 54m

$895

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/11

6:15 am-8:30 am

2 stops20h 15m

Reykjavik Keflavik Intl

Fri 9/18

9:15 am-1:29 pm

2 stops34h 14m

$1,038

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/25

6:15 am-8:50 am

2 stops20h 35m

Reykjavik Keflavik Intl

Tue 9/29

10:00 am-9:21 pm

2 stops41h 21m

$1,043
Quickest round-trip

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/11

6:15 am-7:00 am

2 stops18h 45m

Reykjavik Keflavik Intl

Fri 9/18

9:15 am-9:12 pm

3 stops17h 57m

$1,062

Great FallsReykjavik

GTF - KEF

GTFKEF

Great Falls

Fri 9/11

5:19 pm-2:00 pm

1 stop14h 41m

Reykjavik Keflavik Intl

Fri 9/18

4:50 pm-4:39 pm

2 stops29h 49m

$1,131

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

Fastest flight time

20h 35m

Direct flights

None
The fastest flight from Great Falls to Reykjavik Keflavik Intl Airport takes 20h 35m
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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Frequently asked questions about flying from Great Falls to Reykjavik Keflavik Intl Airport

  • 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 20h 35m.

  • 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.

Frequently asked questions about flying from Great Falls to Reykjavik Keflavik Intl Airport

  • 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
Selfoss
Hella
Hveragerdi
Borgarnes
Grindavik
Kopavogur

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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