$254+ 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
Dec 20 — Dec 271
1 adult, Economy
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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.Find flight deals from St. Louis to Great Falls
Cheapest flights from St. Louis to Great FallsExplore 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 November 20, 2025.
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 November 20, 2025.
This Alaska Airlines deal was found by Cheapflights users on 11/19. 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 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 stop20h 05mAlaska Airlines
Deal found 11/19![Alaska Airlines logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 11/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:57 pmSTL - GTF
2 stops15h 09mMultiple Airlines
Sun 11/239:04 pmGTF - STL
1 stop17h 04mMultiple Airlines
Deal found 11/18![Multiple Airlines logo]()
$532
This Delta deal was found by Cheapflights users on 11/20. 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.
Fri 12/56:30 amSTL - GTF
1 stop7h 01mDelta
Tue 12/91:12 pmGTF - STL
1 stop4h 58mDelta
Deal found 11/20![Delta logo]()
$558
This Delta deal was found by Cheapflights users on 11/18. 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 11/207:05 amSTL - GTF
2 stops11h 25mDelta
Sun 11/235:30 amGTF - STL
2 stops10h 39mDelta
Deal found 11/18![Delta logo]()
$767
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 November 20, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $398 (Delta) |
One-way from | $254 (Delta) |
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 November 20, 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
Thu 1/8
7:00 am-12:33 pm
1 stop6h 33m
Great Falls
Mon 1/12
1:15 pm-9:35 pm
1 stop7h 20m
$398
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
$468
St. LouisGreat Falls
STL - GTF
STLGTF
Lambert-St Louis
Fri 12/5
6:30 am-12:31 pm
1 stop7h 01m
Great Falls
Tue 12/9
1:12 pm-7:10 pm
1 stop4h 58m
$558
St. LouisGreat Falls
STL - GTF
STLGTF
Lambert-St Louis
Thu 1/1
7:20 am-12:31 pm
1 stop6h 11m
$254
St. LouisGreat Falls
STL - GTF
STLGTF
Lambert-St Louis
Thu 1/1
8:05 am-10:46 pm
2 stops15h 41m
$436
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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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 November 20, 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.
Food
6.6
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Food
6.6
Boarding
7.7
Comfort
7.3
Entertainment
7.1
Overall
7.4
Crew
8.1
Reviews
1 / 20
2.0
MediocreSebrena,Oct 2025
IAH - RSW
Related info for your journey
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Alternative routes for St. Louis to Great Falls
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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 November 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$298 | Average$637 | FlexibilityNo cancel fee | On-time69% |