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Great Falls

$338+ 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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Jul 2 — Jul 91
Wed 7/2
Wed 7/9
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 June 27, 2025.

Round-trip from

$338
(Delta)

Popular in

December

Cheapest in

November

Average price

$674
From Lambert-St Louis to Great Falls
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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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 June 27, 2025.

This Delta deal was found by Cheapflights users on 6/25. 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.
Sat 10/256:15 pmSTL - GTF
1 stop5h 36mDelta
Wed 10/2911:30 amGTF - STL
1 stop5h 27mDelta
Deal found 6/25$338
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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 9/13:35 pmSTL - GTF
1 stop25h 14mAlaska Airlines
Tue 9/94:29 pmGTF - STL
1 stop21h 10mAlaska Airlines
Deal found 6/25$374
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Fri 8/2911:30 amSTL - GTF
2 stops10h 58mUnited Airlines
Mon 9/17:00 amGTF - STL
1 stop4h 43mUnited Airlines
Deal found 6/27$574

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 June 27, 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

Sat 10/25

6:15 pm-10:51 pm

1 stop5h 36m

Great Falls

Wed 10/29

11:30 am-5:57 pm

1 stop5h 27m

$338

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Mon 9/1

3:35 pm-3:49 pm

1 stop25h 14m

Great Falls

Tue 9/9

4:29 pm-2:39 pm

1 stop21h 10m

$374

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Fri 8/29

11:30 am-9:28 pm

2 stops10h 58m

Great Falls

Mon 9/1

7:00 am-12:43 pm

1 stop4h 43m

$574

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

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 June 27, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

  • What are the cheapest airlines flying from St. Louis to Great Falls round-trip?

    Flying on Delta is currently your cheapest option to Great Falls, with prices starting at $338. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at $374 and $574, respectively. Delta is 36% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Great Falls?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Great Falls (average of $367). Flying from St. Louis to Great Falls in July is currently the most expensive (average of $574). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 2 airlines flying from St. Louis to Great Falls

Discover the top 2 airlines 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 June 27, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$302Average$637FlexibilityNo cancel feeOn-time69%
DeltaCheapest$304Average$506FlexibilityNo cancel feeOn-timeN/A

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