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$174+ Cheap flights from St. Louis to Great Falls (STL - GTF)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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Find 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 October 23, 2025.

This Delta deal was found by Cheapflights users on 10/21. 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 12/36:15 amSTL - GTF
1 stop7h 16mDelta
Fri 12/56:10 pmGTF - STL
1 stop5h 38mDelta
Deal found 10/21$338
This Alaska Airlines deal was found by Cheapflights users on 10/23. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/167:00 amSTL - GTF
1 stop12h 55mAlaska Airlines
Fri 1/27:21 pmGTF - STL
1 stop27h 29mAlaska Airlines
Deal found 10/23$453
This Alaska Airlines deal was found by Cheapflights users on 10/21. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:55 amSTL - GTF
2 stops13h 00mAlaska Airlines
Fri 12/57:35 pmGTF - STL
2 stops26h 12mAlaska Airlines
Deal found 10/21$507
This United Airlines deal was found by Cheapflights users on 10/23. 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.
Sun 11/234:43 pmSTL - GTF
1 stop21h 50mUnited Airlines
Sat 11/296:20 amGTF - STL
1 stop5h 19mUnited Airlines
Deal found 10/23$616
This Delta deal was found by Cheapflights users on 10/23. 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.
Fri 11/216:34 amSTL - GTF
1 stop6h 58mDelta
Fri 11/281:12 pmGTF - STL
1 stop7h 06mDelta
Deal found 10/23$628

Cheap 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$338
(Hawaiian Airlines)

One-way from

$174
(Delta)
Provider with most accurate pricing for Lambert-St Louis-Great Falls flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Great Falls flights.
Search Deals
From Lambert-St Louis to Great Falls
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One-way flight from Lambert-St Louis to Great Falls
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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 October 23, 2025.
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 12/3

6:15 am-12:31 pm

1 stop7h 16m

Great Falls

Fri 12/5

6:10 pm-12:48 am

1 stop5h 38m

$338

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Fri 3/6

7:00 am-3:20 pm

1 stop9h 20m

Great Falls

Tue 3/10

4:00 pm-11:56 pm

1 stop6h 56m

$338

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Fri 3/6

5:00 pm-10:53 pm

1 stop6h 53m

Great Falls

Tue 3/10

1:10 pm-11:10 pm

2 stops9h 00m

$418

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 12/16

7:00 am-6:55 pm

1 stop12h 55m

Great Falls

Fri 1/2

7:21 pm-4:26 pm

1 stop20h 05m

$453

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 1/1

7:20 am-12:31 pm

1 stop6h 11m

$174

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Fri 1/2

7:20 am-12:31 pm

1 stop6h 11m

$263

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Tue 12/30

7:20 am-12:31 pm

1 stop6h 11m

$263

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 12/31

7:20 am-12:31 pm

1 stop6h 11m

$263

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 1/1

6:35 pm-10:46 pm

2 stops29h 11m

$313

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 1/3

9:00 am-1:39 pm

1 stop5h 39m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 12 results
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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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub the most. FlightHub 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 October 23, 2025.
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
8,995 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,995 reviews
United Airlines
7.4
Good
8,995 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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 Hawaiian Airlines fly from St. Louis to Great Falls in about 7h 16m. The time it takes to get you to your destination can typically vary by up to 2h 04m. 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 $298.

  • 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.

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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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$298Average$637FlexibilityNo cancel feeOn-time69%

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