HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Great Falls

$278+ Cheap flights from St. Louis to Great Falls (STL - GTF)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Feb 20 — Feb 271
Fri 2/20
Fri 2/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to Great Falls with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from St. Louis to Great Falls

Cheapest flights from St. Louis to Great Falls
Explore the most affordable flight options available from St. Louis to Great Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2026.

This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:12 pm
STL
-
GTF
1 stop5h 18m
Delta
Wed 3/186:22 pm
GTF
-
STL
1 stop4h 59m
Delta
Deal found 1/21$278
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/1110:00 am
STL
-
GTF
2 stops12h 11m
United Airlines
Wed 3/182:30 pm
GTF
-
STL
1 stop5h 11m
United Airlines
Deal found 1/21$284
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:30 pm
STL
-
GTF
1 stop5h 47m
United Airlines
Sat 5/26:15 am
GTF
-
STL
1 stop7h 13m
United Airlines
Deal found 1/20$303
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/42:45 pm
STL
-
GTF
1 stop8h 08m
United Airlines
Sun 2/82:29 pm
GTF
-
STL
1 stop5h 29m
United Airlines
Deal found 1/20$328
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:55 am
STL
-
GTF
2 stops11h 34m
Delta
Tue 3/36:20 pm
GTF
-
STL
1 stop5h 05m
Delta
Deal found 1/19$359
This Delta deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/316:29 am
STL
-
GTF
2 stops12h 13m
Delta
Sat 5/26:20 pm
GTF
-
STL
2 stops13h 10m
Delta
Deal found 1/20$364
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:10 am
STL
-
GTF
2 stops12h 20m
Delta
Mon 2/96:15 pm
GTF
-
STL
2 stops13h 38m
Delta
Deal found 1/21$369
This United Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/318:30 am
STL
-
GTF
2 stops13h 47m
United Airlines
Sat 5/22:35 pm
GTF
-
STL
1 stop5h 08m
United Airlines
Deal found 1/20$402
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/257:00 am
STL
-
GTF
1 stop6h 30m
Delta
Wed 3/45:20 am
GTF
-
STL
2 stops8h 34m
Delta
Deal found 1/19$408

Find flight deals from St. Louis to Great Falls

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Great Falls (GTF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$278
(Delta)
Provider with most accurate pricing for Lambert-St Louis-Great Falls flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Great Falls flights.
Search Deals
From Lambert-St Louis to Great Falls
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Great Falls 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, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
Use the filters below to find and compare flights from St. Louis to Great Falls that are best for you.

Fly from

St. Louis

Fly to

Great Falls

Route

Depart

Return

Price

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 3/11

7:15 am-12:24 pm

1 stop6h 09m

Great Falls

Wed 3/18

6:22 pm-12:21 am

1 stop4h 59m

$278

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 3/31

7:00 am-4:26 pm

1 stop10h 26m

Great Falls

Tue 5/5

6:15 pm-3:50 pm

1 stop20h 35m

$278

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 2/24

7:00 am-12:30 pm

1 stop6h 30m

Great Falls

Tue 3/3

6:20 pm-12:25 am

1 stop5h 05m

$278

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 2/25

7:00 am-12:30 pm

1 stop6h 30m

Great Falls

Wed 3/4

6:20 pm-12:25 am

1 stop5h 05m

$278

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 3/31

9:10 am-9:17 pm

2 stops13h 07m

Great Falls

Tue 5/5

2:35 pm-8:43 pm

1 stop5h 08m

$284

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 3/11

10:00 am-9:11 pm

2 stops12h 11m

Great Falls

Wed 3/18

2:30 pm-8:41 pm

1 stop5h 11m

$284

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 4/28

4:30 pm-9:17 pm

1 stop5h 47m

Great Falls

Sat 5/2

6:15 am-2:28 pm

1 stop7h 13m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Compare providers for flights from St. Louis to Great Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Great Falls in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Great Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Great Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Great Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Great Falls flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Great Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Great Falls

Have a flexible travel schedule? Discover the best time to fly to Great Falls from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Great Falls

Get insights into the airlines that provide service to Great Falls. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Great Falls. Reviews last updated January 21, 2026.
Get a feel of what it's like to fly with United Airlines from St. Louis to Great Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,191 reviews

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,191 reviews
United Airlines
7.4
Good
9,191 reviews

Food

6.6

Crew

8.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Great Falls. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Great Falls?

    Airlines like Delta and Alaska Airlines fly from St. Louis to Great Falls in about 6h 09m. The time it takes to get you to your destination can typically vary by up to 4h 17m. Airlines will cover a distance of 1212 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from St. Louis to Great Falls round-trip?

    Flying on United Airlines is currently your cheapest option to Great Falls, with prices starting at $293.

  • Can I find deals for flights from St. Louis to Great Falls that include hotel bookings?

    Yes. In addition to deals on St. Louis to Great Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Great Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Great Falls.

  • Can I find deals for business class flights from St. Louis to Great Falls?

    Yes. Cheapflights offers flight deals from St. Louis to Great Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Great Falls?

Book flights to Great Falls if you plan to visit one of these locations
Shelby

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Great Falls

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Bozeman flights
Kansas City to Kalispell flights
Kansas City to Bozeman flights
St. Louis to Kalispell flights
St. Louis to Billings flights
St. Louis to Missoula flights
Kansas City to Missoula flights
St. Louis to Helena flights
Kansas City to Great Falls flights
Kansas City to Billings flights
Springfield to Bozeman flights
Columbia to Bozeman flights
Columbia to Missoula flights
Springfield to Butte flights
Springfield to Kalispell flights
Springfield to Helena flights
Springfield to Missoula flights
Kansas City to Cody flights
Springfield to Great Falls flights
St. Louis to Butte flights
Springfield to Billings flights
Kansas City to Helena flights
St. Louis to Cody flights
Joplin to Missoula flights
Joplin to Bozeman flights
Kansas City to West Yellowstone flights
Columbia to West Yellowstone flights
St. Louis to West Yellowstone flights
Springfield to West Yellowstone flights

Top airline flying from St. Louis to Great Falls

Discover the top airline that operate flights from St. Louis to Great Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$293Average$631FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.