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$244+ 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 6/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
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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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$347
(Alaska Airlines)

One-way from

$244
(Alaska Airlines)
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.
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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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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 January 8, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/7. 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 4/287:00 amSTL - GTF
1 stop11h 35mAlaska Airlines
Sat 5/26:15 pmGTF - STL
1 stop20h 35mAlaska Airlines
Deal found 1/7$347
This United Airlines deal was found by Cheapflights users on 1/7. 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 pmSTL - GTF
1 stop5h 47mUnited Airlines
Sat 5/26:15 amGTF - STL
2 stops12h 10mUnited Airlines
Deal found 1/7$414
This Alaska Airlines deal was found by Cheapflights users on 1/6. 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.
Mon 5/254:46 pmSTL - GTF
1 stop26h 26mAlaska Airlines
Thu 6/46:52 pmGTF - STL
1 stop19h 58mAlaska Airlines
Deal found 1/6$444
This Delta deal was found by Cheapflights users on 1/6. 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 6/47:30 amSTL - GTF
1 stop5h 53mDelta
Thu 6/116:20 pmGTF - STL
1 stop5h 16mDelta
Deal found 1/6$485

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 8, 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

Tue 4/28

4:46 pm-5:35 pm

1 stop25h 49m

Great Falls

Sat 5/2

6:15 pm-3:50 pm

1 stop20h 35m

$347

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-7:25 pm

2 stops12h 10m

$414

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Mon 5/25

4:46 pm-6:12 pm

1 stop26h 26m

Great Falls

Thu 6/4

6:52 pm-3:50 pm

1 stop19h 58m

$444

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 6/4

7:30 am-12:23 pm

1 stop5h 53m

Great Falls

Thu 6/11

6:20 pm-12:36 am

1 stop5h 16m

$485

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Wed 6/24

7:30 pm-6:15 pm

1 stop23h 45m

Great Falls

Wed 7/1

6:55 pm-6:34 pm

1 stop22h 39m

$536

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Fri 6/26

7:30 pm-6:15 pm

1 stop23h 45m

$244

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Mon 6/29

6:20 pm-6:15 pm

2 stops24h 55m

$293

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 6/27

2:58 pm-6:15 pm

1 stop28h 17m

$309

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 6/25

7:30 am-12:23 pm

1 stop5h 53m

$314

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 6/27

6:00 pm-9:15 pm

3 stops28h 15m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/6

Showing 1-10 of 11 results
1
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Great Falls flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 8, 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
9,139 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,139 reviews
United Airlines
7.4
Good
9,139 reviews

Overall

7.4

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 Alaska Airlines and United Airlines fly from St. Louis to Great Falls in about 5h 47m. The time it takes to get you to your destination can typically vary by up to 20h 02m. 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

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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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$298Average$631FlexibilityNo cancel feeOn-time69%

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