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Cheap flights from Great Falls to the United States from $49

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Great Falls to the United States departing on 7/27. 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 the United States

Cheap round-trip flights

Enter your travel dates to find the best prices.
Allegiant Air Logo
10:19 am - 11:34 am
GTF
-
LAS
2h 15mnonstop
Allegiant Air Logo
6:15 am - 9:34 am
LAS
-
GTF
2h 19mnonstop
$83Allegiant Air
Mon, Jul 20 - Fri, Jul 24
Allegiant Air Logo
10:19 am - 11:34 am
GTF
-
LAS
2h 15mnonstop
Allegiant Air Logo
6:10 am - 9:29 am
LAS
-
GTF
2h 19mnonstop
$89Allegiant Air
Mon, Jul 27 - Fri, Aug 7
Alaska Airlines Logo
4:57 pm - 5:47 pm
GTF
-
SEA
1h 50mnonstop
Alaska Airlines Logo
1:42 pm - 4:17 pm
SEA
-
GTF
1h 35mnonstop
$172Alaska Airlines
Sat, Nov 7 - Sat, Nov 14
Alaska Airlines Logo
4:57 pm - 5:47 pm
GTF
-
SEA
1h 50mnonstop
Alaska Airlines Logo
1:42 pm - 4:17 pm
SEA
-
GTF
1h 35mnonstop
$197Alaska Airlines
Sat, Nov 7 - Sat, Nov 14
Delta Logo
5:30 am - 12:24 pm
GTF
-
SEA
7h 54m
1 stop
Delta Logo
5:45 am - 12:27 pm
SEA
-
GTF
5h 42m
1 stop
$216Delta
Sat, Nov 7 - Sat, Nov 14
Delta Logo
1:08 pm - 4:59 pm
GTF
-
SEA
4h 51m
1 stop
Delta Logo
5:45 am - 12:28 pm
SEA
-
GTF
5h 43m
1 stop
$226Delta
Wed, Sep 2 - Sun, Sep 6
Multiple Airlines Logo
10:18 am - 9:35 am
GTF
-
SLC
23h 17m
1 stop
Multiple Airlines Logo
1:50 pm - 9:28 am
SLC
-
GTF
19h 38m
1 stop
$258Multiple Airlines
Fri, Jun 19 - Sun, Jun 21
United Airlines Logo
6:15 am - 8:16 am
GTF
-
DEN
2h 01mnonstop
United Airlines Logo
7:15 pm - 9:12 pm
DEN
-
GTF
1h 57mnonstop
$259United Airlines
Sat, Sep 19 - Mon, Sep 21
Multiple Airlines Logo
10:18 am - 9:35 am
GTF
-
SLC
23h 17m
1 stop
Multiple Airlines Logo
1:50 pm - 9:28 am
SLC
-
GTF
19h 38m
1 stop
$260Multiple Airlines
Fri, Jun 19 - Sun, Jun 21
United Airlines Logo
6:15 am - 8:15 am
GTF
-
DEN
2h 00mnonstop
United Airlines Logo
7:38 pm - 9:34 pm
DEN
-
GTF
1h 56mnonstop
$275United Airlines
Fri, Jul 31 - Mon, Aug 3

Allegiant Air flights from Great Falls to United States

Our best Allegiant Air deals on Great Falls to United States flight tickets
Allegiant Air
Jul 20
GTF10:19 amGreat Falls
2h 15m
LAS11:34 amLas Vegas Harry Reid Intl
Jul 24
LAS6:15 amLas Vegas Harry Reid Intl
2h 19m
GTF9:34 amGreat Falls
$83
Allegiant Air
Jul 27
GTF10:19 amGreat Falls
2h 15m
LAS11:34 amLas Vegas Harry Reid Intl
Aug 7
LAS6:10 amLas Vegas Harry Reid Intl
2h 19m
GTF9:29 amGreat Falls
$89
Allegiant Air
Jul 13
GTF10:19 amGreat Falls
2h 15m
LAS11:34 amLas Vegas Harry Reid Intl
Jul 17
LAS6:15 amLas Vegas Harry Reid Intl
2h 19m
GTF9:34 amGreat Falls
$94

Alaska Airlines flights from Great Falls to United States

Our best Alaska Airlines deals on Great Falls to United States flight tickets
Alaska Airlines
Nov 7
GTF4:57 pmGreat Falls
1h 50m
SEA5:47 pmSeattle/Tacoma Intl
Nov 14
SEA1:42 pmSeattle/Tacoma Intl
1h 35m
GTF4:17 pmGreat Falls
$172
Alaska Airlines
Nov 7
GTF4:57 pmGreat Falls
1h 50m
SEA5:47 pmSeattle/Tacoma Intl
Nov 14
SEA1:42 pmSeattle/Tacoma Intl
1h 35m
GTF4:17 pmGreat Falls
$197
Alaska Airlines
Sep 3
GTF5:18 pmGreat Falls
1h 49m
SEA6:07 pmSeattle/Tacoma Intl
Sep 7
SEA2:08 pmSeattle/Tacoma Intl
1h 37m
GTF4:45 pmGreat Falls
$217

momondo Fare Finder

 
Customize your flight search to find flights from Great Falls to United States 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 24, 2026.
Use the filters below to find and compare flights from Great Falls to the United States that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Mon 7/20

10:19 am-11:34 am

Nonstop2h 15m

Las Vegas Harry Reid Intl

Fri 7/24

6:15 am-9:34 am

Nonstop2h 19m

$83

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Mon 7/27

10:19 am-11:34 am

Nonstop2h 15m

Las Vegas Harry Reid Intl

Fri 8/7

6:10 am-9:29 am

Nonstop2h 19m

$89
Quickest round-trip

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sat 11/7

4:57 pm-5:47 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Sat 11/14

1:42 pm-4:17 pm

Nonstop1h 35m

$172

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sat 11/7

4:57 pm-5:47 pm

Nonstop1h 50m

Seattle/Tacoma Intl

Sat 11/14

1:42 pm-4:17 pm

Nonstop1h 35m

$197

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Sat 11/7

5:30 am-12:24 pm

1 stop7h 54m

Seattle/Tacoma Intl

Sat 11/14

5:45 am-12:27 pm

1 stop5h 42m

$216

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Wed 9/2

1:08 pm-4:59 pm

1 stop4h 51m

Seattle/Tacoma Intl

Sun 9/6

5:45 am-12:28 pm

1 stop5h 43m

$226

Great FallsSalt Lake City

GTF - SLC

GTFSLC

Great Falls

Fri 6/19

10:18 am-9:35 am

1 stop23h 17m

Salt Lake City

Sun 6/21

1:50 pm-9:28 am

1 stop19h 38m

$258

Great FallsDenver

GTF - DEN

GTFDEN

Great Falls

Sat 9/19

6:15 am-8:16 am

Nonstop2h 01m

Denver Intl

Mon 9/21

7:15 pm-9:12 pm

Nonstop1h 57m

$259

Great FallsSalt Lake City

GTF - SLC

GTFSLC

Great Falls

Fri 6/19

10:18 am-9:35 am

1 stop23h 17m

Salt Lake City

Sun 6/21

1:50 pm-9:28 am

1 stop19h 38m

$260

Great FallsDenver

GTF - DEN

GTFDEN

Great Falls

Fri 7/31

6:15 am-8:15 am

Nonstop2h 00m

Denver Intl

Mon 8/3

7:38 pm-9:34 pm

Nonstop1h 56m

$275

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to the United States from

How to get the cheapest flight ticket from Great Falls to United States

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to United States?

In general, September is the cheapest month to fly from Great Falls to United States. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $43. If you aren’t able to travel during the month of September, then book flights to United States from Great Falls during November instead. Flights to United States in November, while not as cheap as those in September, still average around $52.

What is the cheapest Great Falls to United States flight route?

Fly from Great Falls to Las Vegas Harry Reid Intl for the best Great Falls - United States flight prices

What cabin class options are available on Great Falls to United States flights?

There are 3 cabin classes available to choose from on Great Falls to United States flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Great Falls to United States flights?

No. A direct flight is the cheapest option for a flight between Great Falls to United States.

Cheap Great Falls to United States flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Great Falls to United States

Best Price Found

$72

Fastest flight time

1h 30m

Direct flights

Every day

Airports in United States

4,297 airports
The best one-way flight to United States from Great Falls in the past 72 hours is $72. The best round-trip flight deal from Great Falls to United States found on momondo in the last 72 hours is $97.
The fastest flight from Great Falls to United States takes 1h 30m
Direct flights go from Great Falls to United States every day.
There are 4,297 airports in United States. From Great Falls there are direct flights to Salt Lake City (SLC), Denver Intl (DEN), Seattle/Tacoma Intl (SEA).
Search flight deals

Frequently asked questions about flying from Great Falls to the United States

  • When did momondo last update prices for flights from Great Falls Airport to United States?

    Prices for flights from Great Falls Airport to United States are updated daily.

  • How many operators does momondo search for flights from Great Falls Airport to United States?

  • How old do you have to be to fly from Great Falls Airport to United States?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Great Falls Airport to United States.

  • What documentation or ID do you need to fly to United States?

    The required travel and health documents for your United States trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United States. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Great Falls to United States?

Best airlines flying from Great Falls to United States

Compare and see reviews for airlines that fly from Great Falls to United States with momondo
Airline
Rating
Free Cancellation
Price
Allegiant AirPriceFrom $72Free CancellationRating
7.3
710 reviews
Search Allegiant Air flights
DeltaPriceFrom $103Free CancellationRating
7.9
8,434 reviews
Search Delta flights
Alaska AirlinesPriceFrom $120Free CancellationRating
7.9
12,410 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $194Free CancellationRating
7.4
9,749 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Great Falls to United States flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United States that suits you.

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

All flight searches from Great Falls to United States on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Great Falls to United States flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to United States from Great Falls are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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