Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Great Falls to the United States from $100

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 the United States departing on 10/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Great Falls to the United States

Cheap round-trip flights

Allegiant Air Logo
10:22 pm - 11:34 pmGTF-LAS
2h 12mnonstop
Allegiant Air Logo
6:20 pm - 9:37 pmLAS-GTF
2h 17mnonstop
$100Allegiant Air
Find Deal
Mon, Oct 6 - Fri, Oct 17
Allegiant Air Logo
10:22 pm - 11:34 pmGTF-LAS
2h 12mnonstop
Allegiant Air Logo
6:20 pm - 9:37 pmLAS-GTF
2h 17mnonstop
$118Allegiant Air
Find Deal
Mon, Oct 13 - Fri, Oct 17
Logo
10:21 pm - 11:37 pmGTF-LAS
2h 16mnonstop
Logo
10:14 pm - 12:15 pmLAS-GTF
37h 01m2 stops
$184
Find Deal
Fri, Sep 26 - Tue, Sep 30
Logo
5:35 pm - 7:16 amGTF-LAS
14h 41m1 stop
Logo
8:06 pm - 4:45 pmLAS-GTF
19h 39m1 stop
$194
Find Deal
Sun, Nov 9 - Wed, Nov 12
United Airlines Logo
2:31 pm - 4:29 pmGTF-DEN
1h 58mnonstop
United Airlines Logo
7:15 pm - 9:11 pmDEN-GTF
1h 56mnonstop
$199United Airlines
Find Deal
Mon, Oct 6 - Mon, Oct 13
United Airlines Logo
7:00 am - 8:55 amGTF-DEN
1h 55mnonstop
United Airlines Logo
7:15 pm - 9:11 pmDEN-GTF
1h 56mnonstop
$219United Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
Delta Logo
6:09 pm - 10:25 pmGTF-DEN
4h 16m1 stop
Delta Logo
5:30 am - 12:28 pmDEN-GTF
6h 58m1 stop
$238Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
Delta Logo
1:08 pm - 10:30 pmGTF-LAS
10h 22m2 stops
Delta Logo
6:00 am - 5:29 pmLAS-GTF
10h 29m2 stops
$279Delta
Find Deal
Wed, Oct 22 - Tue, Oct 28
Alaska Airlines Logo
4:00 pm - 4:48 pmGTF-SEA
1h 48mnonstop
Alaska Airlines Logo
12:45 pm - 3:20 pmSEA-GTF
1h 35mnonstop
$298Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Alaska Airlines Logo
6:15 pm - 10:26 pmGTF-LAS
5h 11m1 stop
Alaska Airlines Logo
10:08 am - 6:10 pmLAS-GTF
7h 02m1 stop
$307Alaska Airlines
Find Deal
Wed, Oct 22 - Tue, Oct 28

Hawaiian Airlines flights from Great Falls to United States

Our best Hawaiian Airlines deals on Great Falls to United States flight tickets
Hawaiian Airlines
Oct 30
GTF6:50 pmGreat Falls
1h 52m
SEA7:42 pmSeattle/Tacoma Intl
Nov 6
SEA3:35 pmSeattle/Tacoma Intl
1h 35m
GTF6:10 pmGreat Falls
$205
Find similar
Hawaiian Airlines
Oct 30
GTF6:50 pmGreat Falls
1h 52m
SEA7:42 pmSeattle/Tacoma Intl
Nov 2
SEA3:35 pmSeattle/Tacoma Intl
1h 35m
GTF6:10 pmGreat Falls
$262
Find similar
Hawaiian Airlines
Oct 30
GTF6:50 pmGreat Falls
1h 52m
SEA7:42 pmSeattle/Tacoma Intl
Nov 2
SEA3:35 pmSeattle/Tacoma Intl
1h 35m
GTF6:10 pmGreat Falls
$292
Find similar

Allegiant Air flights from Great Falls to United States

Our best Allegiant Air deals on Great Falls to United States flight tickets
Allegiant Air
Oct 6
GTF10:22 pmGreat Falls
2h 12m
LAS11:34 pmLas Vegas Harry Reid Intl
Oct 17
LAS6:20 pmLas Vegas Harry Reid Intl
2h 17m
GTF9:37 pmGreat Falls
$100
Find similar
Allegiant Air
Oct 13
GTF10:22 pmGreat Falls
2h 12m
LAS11:34 pmLas Vegas Harry Reid Intl
Oct 17
LAS6:20 pmLas Vegas Harry Reid Intl
2h 17m
GTF9:37 pmGreat Falls
$118
Find similar
Allegiant Air
Oct 24
GTF10:27 pmGreat Falls
2h 11m
LAS11:38 pmLas Vegas Harry Reid Intl
Oct 27
LAS6:14 pmLas Vegas Harry Reid Intl
2h 18m
GTF9:32 pmGreat Falls
$122
Find similar

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 September 11, 2025.
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

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Mon 10/6

10:22 pm-11:34 pm

Nonstop2h 12m

Las Vegas Harry Reid Intl

Fri 10/17

6:20 pm-9:37 pm

Nonstop2h 17m

$100

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Mon 10/13

10:22 pm-11:34 pm

Nonstop2h 12m

Las Vegas Harry Reid Intl

Fri 10/17

6:20 pm-9:37 pm

Nonstop2h 17m

$118

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Fri 9/26

10:21 pm-11:37 pm

Nonstop2h 16m

Las Vegas Harry Reid Intl

Tue 9/30

10:14 pm-12:15 pm

2 stops37h 01m

$184

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Sun 11/9

5:35 pm-7:16 am

1 stop14h 41m

Las Vegas Harry Reid Intl

Wed 11/12

8:06 pm-4:45 pm

1 stop19h 39m

$194

Great FallsDenver

GTF - DEN

GTFDEN

Great Falls

Mon 10/6

2:31 pm-4:29 pm

Nonstop1h 58m

Denver Intl

Mon 10/13

7:15 pm-9:11 pm

Nonstop1h 56m

$199

Great FallsDenver

GTF - DEN

GTFDEN

Great Falls

Thu 9/25

7:00 am-8:55 am

Nonstop1h 55m

Denver Intl

Mon 9/29

7:15 pm-9:11 pm

Nonstop1h 56m

$219

Great FallsDenver

GTF - DEN

GTFDEN

Great Falls

Tue 10/14

6:09 pm-10:25 pm

1 stop4h 16m

Denver Intl

Tue 10/21

5:30 am-12:28 pm

1 stop6h 58m

$238

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Wed 10/22

1:08 pm-10:30 pm

2 stops10h 22m

Las Vegas Harry Reid Intl

Tue 10/28

6:00 am-5:29 pm

2 stops10h 29m

$279

Great FallsSeattle

GTF - SEA

GTFSEA

Great Falls

Tue 3/10

4:00 pm-4:48 pm

Nonstop1h 48m

Seattle/Tacoma Intl

Wed 3/11

12:45 pm-3:20 pm

Nonstop1h 35m

$298

Great FallsLas Vegas

GTF - LAS

GTFLAS

Great Falls

Wed 10/22

6:15 pm-10:26 pm

1 stop5h 11m

Las Vegas Harry Reid Intl

Tue 10/28

10:08 am-6:10 pm

1 stop7h 02m

$307

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 day to depart on your flight to United States?

According to our data, Wednesday is the cheapest day to fly to United States from Great Falls. The lowest ticket price found for a Wednesday departure recently was $545. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $808. These prices are subject to change though, so be sure to set up a Price Alert for flights to United States.

What is the cheapest time of day to depart on your flight to United States?

The cheapest time of day to fly to United States is in the morning when flights can be purchased for as low as $617. Try not to purchase tickets in the afternoon because they tend to be around $732. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 4 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

$64

Fastest flight time

1h 48m

Direct flights

Tue, Wed, Thu, Fri, Sat and Sun

Airports in United States

2 airports
The best one-way flight to United States from Great Falls in the past 72 hours is $64. The best round-trip flight deal from Great Falls to United States found on momondo in the last 72 hours is $133.
The fastest flight from Great Falls to United States takes 1h 48m
Direct flights go from Great Falls to United States on Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines, Allegiant Air and Hawaiian Airlines.
There are 2 airports near United States: Denver Intl (DEN), Seattle/Tacoma Intl (SEA)
Search flight deals

  • 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 $78Free CancellationRating
7.2
702 reviews
Search Allegiant Air flights
DeltaPriceFrom $132Free CancellationRating
7.9
7,960 reviews
Search Delta flights
United AirlinesPriceFrom $162Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $198Free CancellationRating
8.0
10,000 reviews
Search Alaska 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.

An easier way to manage your United States trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 10/11
Sat 10/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo
Flights to New Yorkfrom $49
Flights to Los Angelesfrom $49
Flights to Miamifrom $51
Flights to Chicagofrom $49
Flights to Orlandofrom $51
Flights to Las Vegasfrom $49
Flights to San Franciscofrom $51
Flights to Washington, D.C.from $51
Flights to Bostonfrom $60
Flights to Atlantafrom $51
Flights to Dallasfrom $63
Flights to Seattlefrom $78