What airlines fly to United States?

United Airlines, Delta and Allegiant Air are the top three most popular airlines that fly to United States from Great Falls according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to United States. Keep in mind that there are 4 different airlines that fly to United States on a routine basis, so you have a few additional options to choose from.

How many flights depart from Great Falls to United States on average per week?

As of October 2026, there are 57 flights per week flying from Great Falls to United States. The most common day of the week flights depart is Wed, with 19% of flights taking off on this day.

What is the cheapest airline that flies from Great Falls to United States?

Allegiant Air, Alaska Airlines, and Delta are the most popular carriers operating from Great Falls to 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?

The number of operators available for flights from Great Falls Airport to United States is 4 as of October 2026.

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.

$56 Cheap Flights from Great Falls to the United States in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Great Falls to the United States

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:22 am - 11:56 amGTF Great Falls-AZA Phoenix-Mesa Gateway

2h 34mnonstop

6:00 am - 8:32 amAZA Phoenix-Mesa Gateway-GTF Great Falls

2h 32mnonstop

$86Allegiant Air

Sun, Nov 1 - Thu, Nov 5

9:22 am - 11:56 amGTF Great Falls-AZA Phoenix-Mesa Gateway

2h 34mnonstop

6:00 am - 8:32 amAZA Phoenix-Mesa Gateway-GTF Great Falls

2h 32mnonstop

$91Allegiant Air

Sun, Nov 1 - Thu, Nov 5

5:10 pm - 6:06 pmGTF Great Falls-SEA Seattle/Tacoma Intl

1h 56mnonstop

1:50 pm - 4:30 pmSEA Seattle/Tacoma Intl-GTF Great Falls

1h 40mnonstop

$207Alaska Airlines

Sat, Nov 7 - Wed, Nov 11

5:10 pm - 6:06 pmGTF Great Falls-SEA Seattle/Tacoma Intl

1h 56mnonstop

1:50 pm - 4:30 pmSEA Seattle/Tacoma Intl-GTF Great Falls

1h 40mnonstop

$207Alaska Airlines

Sat, Nov 7 - Sat, Nov 14

1:18 pm - 7:02 pmGTF Great Falls-SEA Seattle/Tacoma Intl

6h 44m1 stop Salt Lake City

5:35 am - 12:41 pmSEA Seattle/Tacoma Intl-GTF Great Falls

6h 06m1 stop Salt Lake City

$226Delta

Sat, Nov 7 - Wed, Nov 11

6:27 pm - 10:05 pmGTF Great Falls-SEA Seattle/Tacoma Intl

4h 38m1 stop Salt Lake City

11:30 am - 5:39 pmSEA Seattle/Tacoma Intl-GTF Great Falls

5h 09m1 stop Salt Lake City

$246Delta

Sat, Nov 7 - Wed, Nov 11

2:47 pm - 7:43 pmGTF Great Falls-SLC Salt Lake City

4h 56m1 stop Denver Intl

2:40 pm - 9:13 pmSLC Salt Lake City-GTF Great Falls

6h 33m1 stop Denver Intl

$288United Airlines

Sat, Dec 5 - Wed, Dec 9

11:39 am - 12:53 pmGTF Great Falls-LAS Las Vegas Harry Reid Intl

2h 14mnonstop

7:00 am - 4:11 pmLAS Las Vegas Harry Reid Intl-GTF Great Falls

8h 11m1 stop Seattle/Tacoma Intl

$301Multiple Airlines

Mon, Dec 7 - Fri, Dec 11

11:39 am - 12:53 pmGTF Great Falls-LAS Las Vegas Harry Reid Intl

2h 14mnonstop

7:00 am - 4:11 pmLAS Las Vegas Harry Reid Intl-GTF Great Falls

8h 11m1 stop Seattle/Tacoma Intl

$301Multiple Airlines

Mon, Dec 7 - Fri, Dec 11

2:45 pm - 4:39 pmGTF Great Falls-DEN Denver Intl

1h 54mnonstop

7:30 pm - 9:38 pmDEN Denver Intl-GTF Great Falls

2h 08mnonstop

$309United Airlines

Thu, Oct 29 - Sun, Nov 1

Cheap last minute flights

Enter your travel dates to find the best prices.

9:51 am - 11:24 amGTF Great Falls-AZA Phoenix-Mesa Gateway

2h 33mnonstop

5:30 am - 9:01 amAZA Phoenix-Mesa Gateway-GTF Great Falls

2h 31mnonstop

$255Allegiant Air

Sun, Oct 4 - Thu, Oct 8

1:18 pm - 2:57 pmGTF Great Falls-SLC Salt Lake City

1h 39mnonstop

10:50 am - 12:38 pmSLC Salt Lake City-GTF Great Falls

1h 48mnonstop

$379Delta

Tue, Oct 6 - Tue, Oct 13

6:15 am - 8:16 amGTF Great Falls-DEN Denver Intl

2h 01mnonstop

7:25 pm - 9:22 pmDEN Denver Intl-GTF Great Falls

1h 57mnonstop

$384United Airlines

Mon, Oct 5 - Mon, Oct 12

6:15 am - 1:22 pmGTF Great Falls-SLC Salt Lake City

7h 07m1 stop Denver Intl

2:34 pm - 9:22 pmSLC Salt Lake City-GTF Great Falls

6h 48m1 stop Denver Intl

$398United Airlines

Tue, Oct 6 - Tue, Oct 13

1:18 pm - 11:12 pmGTF Great Falls-BNA Nashville Intl

8h 54m1 stop Salt Lake City

5:00 pm - 10:29 pmBNA Nashville Intl-GTF Great Falls

6h 29m1 stop Salt Lake City

$418Delta

Wed, Oct 7 - Wed, Oct 21

1:18 pm - 11:12 pmGTF Great Falls-BNA Nashville Intl

8h 54m1 stop Salt Lake City

7:25 am - 12:38 pmBNA Nashville Intl-GTF Great Falls

6h 13m1 stop Salt Lake City

$418Delta

Tue, Oct 6 - Tue, Oct 20

5:15 pm - 11:59 pmGTF Great Falls-LAS Las Vegas Harry Reid Intl

7h 44m1 stop Seattle/Tacoma Intl

9:45 am - 4:35 pmLAS Las Vegas Harry Reid Intl-GTF Great Falls

5h 50m1 stop Seattle/Tacoma Intl

$564Alaska Airlines

Sat, Oct 3 - Tue, Oct 6

5:15 pm - 11:51 pmGTF Great Falls-SLC Salt Lake City

6h 36m1 stop Seattle/Tacoma Intl

9:42 am - 4:35 pmSLC Salt Lake City-GTF Great Falls

6h 53m1 stop Seattle/Tacoma Intl

$593Alaska Airlines

Tue, Oct 6 - Thu, Oct 8

5:15 pm - 10:28 pmGTF Great Falls-AZA Phoenix-Mesa Gateway

30h 13m3 stops Seattle/Tacoma Intl Calgary Santa Ana J. Wayne/Orange Cnty

5:30 am - 9:01 amAZA Phoenix-Mesa Gateway-GTF Great Falls

2h 31mnonstop

$1,262Multiple Airlines

Wed, Oct 7 - Sun, Oct 11

5:15 pm - 10:28 pmGTF Great Falls-AZA Phoenix-Mesa Gateway

30h 13m3 stops Seattle/Tacoma Intl Calgary Santa Ana J. Wayne/Orange Cnty

5:30 am - 9:01 amAZA Phoenix-Mesa Gateway-GTF Great Falls

2h 31mnonstop

$1,690Multiple Airlines

Sat, Oct 3 - Thu, Oct 8

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Allegiant Air flights from Great Falls to United States

Our best Allegiant Air deals on Great Falls to United States flight tickets

Allegiant Air

Nov 1

GTF9:22 amGreat Falls

2h 34m

AZA11:56 amPhoenix-Mesa Gateway

Nov 5

AZA6:00 amPhoenix-Mesa Gateway

2h 32m

GTF8:32 amGreat Falls

$86

Allegiant Air

Nov 1

GTF9:22 amGreat Falls

2h 34m

AZA11:56 amPhoenix-Mesa Gateway

Nov 5

AZA6:00 amPhoenix-Mesa Gateway

2h 32m

GTF8:32 amGreat Falls

$91

Allegiant Air

Nov 1

GTF9:22 amGreat Falls

2h 34m

AZA11:56 amPhoenix-Mesa Gateway

Nov 5

AZA6:00 amPhoenix-Mesa Gateway

2h 32m

GTF8:32 amGreat Falls

$96

United Airlines flights from Great Falls to United States

Our best United Airlines deals on Great Falls to United States flight tickets

United Airlines

Dec 5

GTF2:47 pmGreat Falls

4h 56m

1 stop

SLC7:43 pmSalt Lake City

Dec 9

SLC2:40 pmSalt Lake City

6h 33m

1 stop

GTF9:13 pmGreat Falls

$288

United Airlines

Oct 27

GTF2:45 pmGreat Falls

1h 54m

DEN4:39 pmDenver Intl

Nov 3

DEN11:45 amDenver Intl

2h 04m

GTF1:49 pmGreat Falls

$309

United Airlines

Jan 1

GTF6:20 amGreat Falls

2h 03m

DEN8:23 amDenver Intl

Jan 8

DEN7:20 pmDenver Intl

2h 00m

GTF9:20 pmGreat Falls

$319

momondo Fare Finder

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 FallsPhoenix

GTF Great Falls - AZA Phoenix-Mesa Gateway

GTFAZA

Great Falls

Sun 11/1

9:22 am-11:56 am

Nonstop2h 34m

Phoenix-Mesa Gateway

Thu 11/5

6:00 am-8:32 am

Nonstop2h 32m

$86

Great FallsPhoenix

GTF Great Falls - AZA Phoenix-Mesa Gateway

GTFAZA

Great Falls

Sun 11/1

9:22 am-11:56 am

Nonstop2h 34m

Phoenix-Mesa Gateway

Thu 11/5

6:00 am-8:32 am

Nonstop2h 32m

$91

Quickest round-trip

Great FallsSeattle

GTF Great Falls - SEA Seattle/Tacoma Intl

GTFSEA

Great Falls

Sat 11/7

5:10 pm-6:06 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Wed 11/11

1:50 pm-4:30 pm

Nonstop1h 40m

$207

Great FallsSeattle

GTF Great Falls - SEA Seattle/Tacoma Intl

GTFSEA

Great Falls

Sat 11/7

5:10 pm-6:06 pm

Nonstop1h 56m

Seattle/Tacoma Intl

Sat 11/14

1:50 pm-4:30 pm

Nonstop1h 40m

$207

Great FallsSeattle

GTF Great Falls - SEA Seattle/Tacoma Intl

GTFSEA

Great Falls

Sat 11/7

1:18 pm-7:02 pm

1 stop6h 44m

Seattle/Tacoma Intl

Wed 11/11

5:35 am-12:41 pm

1 stop6h 06m

$226

Great FallsSeattle

GTF Great Falls - SEA Seattle/Tacoma Intl

GTFSEA

Great Falls

Sat 11/7

6:27 pm-10:05 pm

1 stop4h 38m

Seattle/Tacoma Intl

Wed 11/11

11:30 am-5:39 pm

1 stop5h 09m

$246

Great FallsSalt Lake City

GTF Great Falls - SLC Salt Lake City

GTFSLC

Great Falls

Sat 12/5

2:47 pm-7:43 pm

1 stop4h 56m

Salt Lake City

Wed 12/9

2:40 pm-9:13 pm

1 stop6h 33m

$288

Great FallsLas Vegas

GTF Great Falls - LAS Las Vegas Harry Reid Intl

GTFLAS

Great Falls

Mon 12/7

11:39 am-12:53 pm

Nonstop2h 14m

Las Vegas Harry Reid Intl

Fri 12/11

7:00 am-4:11 pm

1 stop8h 11m

$301

Great FallsLas Vegas

GTF Great Falls - LAS Las Vegas Harry Reid Intl

GTFLAS

Great Falls

Mon 12/7

11:39 am-12:53 pm

Nonstop2h 14m

Las Vegas Harry Reid Intl

Fri 12/11

7:00 am-4:11 pm

1 stop8h 11m

$301

Great FallsDenver

GTF Great Falls - DEN Denver Intl

GTFDEN

Great Falls

Thu 10/29

2:45 pm-4:39 pm

Nonstop1h 54m

Denver Intl

Sun 11/1

7:30 pm-9:38 pm

Nonstop2h 08m

$309

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

What is the cheapest month to fly to United States?

In general, March 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 $339. If you aren’t able to travel during the month of March, then book flights to United States from Great Falls during July instead. Flights to United States in July, while not as cheap as those in March, still average around $372.

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 is only 1 cabin class 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	$56
Fastest flight time	1h 35m
Direct flights	Every day
Airports in United States	4,301 airports

The best one-way flight to United States from Great Falls in the past 72 hours is $56. The best round-trip flight deal from Great Falls to United States found on momondo in the last 72 hours is $86.

The fastest flight from Great Falls to United States takes 1h 35m

Direct flights go from Great Falls to United States every day.

There are 4,301 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?
The number of operators available for flights from Great Falls Airport to United States is 4 as of October 2026.
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?
Based on momondo bookings for flights between Great Falls and United States, the leading plane model is Airbus A319, making up 40.32% of the total bookings. Other popular models include Airbus A320-100/200 with 34.78%, Embraer 175 (Enhanced Winglets) with 16.21%, and Embraer 175 with 2.77%.

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 Air	PriceFrom $87	Free Cancellation	Rating 7.3 679 reviews	Search Allegiant Air flights
Alaska Airlines	PriceFrom $120	Free Cancellation	Rating 7.9 13,004 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $194	Free Cancellation	Rating 7.4 10,276 reviews	Search United Airlines flights
Delta	PriceFrom $200	Free Cancellation	Rating 7.8 8,621 reviews	Search Delta 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

Sun 11/1

Sun 11/8

Email me momondo's favorite deals

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

Other flights from Great Falls

Other flights to the United States

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in the United States

Flights to New Yorkfrom $73

Flights to Los Angelesfrom $47

Flights to Orlandofrom $43

Flights to Miamifrom $38

Flights to San Franciscofrom $40

Flights to Chicagofrom $60

Flights to Las Vegasfrom $38

Flights to Washington, D.C.from $46

Flights to Fort Lauderdalefrom $38

Flights to Bostonfrom $104

Flights to Atlantafrom $38

Flights to Dallasfrom $50

Cheap flights from Great Falls to the United States from $56

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 12/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Great Falls to the United States

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Allegiant Air flights from Great Falls to United States

Our best Allegiant Air deals on Great Falls to United States flight tickets

United Airlines flights from Great Falls to United States

Our best United Airlines deals on Great Falls to United States flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Great Falls to the United States that are best for you.

See travel insights to the United States from

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

What is the cheapest month to fly to United States?

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

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

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

What is the cheapest airline that flies from Great Falls to United States?

What airlines fly to United States?

How many flights depart from Great Falls to United States on average per week?

Cheap Great Falls to United States flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in United States

Frequently asked questions about flying from Great Falls to the 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

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Great Falls flight routes

According to popular flight searches on momondo this year

United States flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to the United States

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to the United States

List of cabin classes available on flights landing in the United States. Availability may vary depending on flight origin and airline.

Complete your trip to the United States

Explore popular destinations other users love

According to popular flight searches on momondo this year