$348+ 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 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Nov 13 — Nov 201
Round-trip
1 adult, Economy
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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
Best
Last-minute
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 October 14, 2026.
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 14, 2026.
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Thu 11/268:50 am -
1 stop5h 59m
Sun 12/62:47 pm -
1 stop5h 10m
Deal found 10/11![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 10/11. 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 11/267:08 am -
1 stop6h 33m
Mon 12/71:19 pm -
2 stops9h 07m
Deal found 10/11![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 10/13. 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 11/127:08 am -
1 stop6h 33m
Sat 11/141:21 pm -
1 stop6h 57m
Deal found 10/13![Delta logo]()
$358
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops20h 19m
Mon 12/76:19 pm -
1 stop5h 27m
Deal found 10/11![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops27h 18m
Sat 12/56:19 pm -
2 stops13h 42m
Deal found 10/11![Delta logo]()
$392
This Delta deal was found by Cheapflights users on 10/12. 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 10/279:47 am -
2 stops9h 00m
Sat 10/315:40 am -
1 stop6h 52m
Deal found 10/12![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 10/11. 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 11/267:08 am -
1 stop6h 33m
Sat 12/51:19 pm -
1 stop7h 09m
Deal found 10/11![Delta logo]()
$447
Best flights from St. Louis to Great FallsDiscover carefully curated flight deals from St. Louis to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
Discover carefully curated flight deals from St. Louis to Great Falls that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 14, 2026.
This United Airlines deal was found by Cheapflights users on 10/13. 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.
Thu 11/129:40 am -
2 stops12h 58m
Sat 11/146:30 am -
1 stop5h 08m
Deal found 10/13![United Airlines logo]()
$354
This Delta deal was found by Cheapflights users on 10/13. 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 11/127:08 am -
1 stop6h 33m
Sat 11/141:21 pm -
1 stop6h 57m
Deal found 10/13![Delta logo]()
$358
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops20h 19m
Sun 12/66:19 pm -
1 stop5h 27m
Deal found 10/11![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops20h 19m
Mon 12/76:19 pm -
1 stop5h 27m
Deal found 10/11![Delta logo]()
$387
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Thu 11/265:00 am -
2 stops9h 49m
Sun 12/66:30 am -
2 stops10h 46m
Deal found 10/11![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 10/12. 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 10/279:47 am -
2 stops9h 00m
Sat 10/315:40 am -
1 stop6h 52m
Deal found 10/12![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 10/13. 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 10/304:39 pm -
1 stop5h 59m
Thu 11/56:30 am -
1 stop5h 08m
Deal found 10/13![United Airlines logo]()
$503
This Delta deal was found by Cheapflights users on 10/12. 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 10/212:38 pm -
2 stops8h 51m
Mon 10/266:27 pm -
1 stop5h 17m
Deal found 10/12![Delta logo]()
$489
Last-minute flights from St. Louis to Great FallsDiscover last-minute flight deals from St. Louis to Great Falls. Data last updated October 14, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Great Falls. Data last updated October 14, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 10/12. 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 10/279:47 am -
2 stops9h 00m
Sat 10/315:40 am -
1 stop6h 52m
Deal found 10/12![Delta logo]()
$424
This Delta deal was found by Cheapflights users on 10/13. 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 11/127:08 am -
1 stop6h 33m
Sat 11/141:21 pm -
1 stop6h 57m
Deal found 10/13![Delta logo]()
$358
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops20h 19m
Mon 12/76:19 pm -
1 stop5h 27m
Deal found 10/11![Delta logo]()
$387
This Delta deal was found by Cheapflights users on 10/11. 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 11/255:22 pm -
2 stops27h 18m
Sat 12/56:19 pm -
2 stops13h 42m
Deal found 10/11![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Thu 11/268:50 am -
1 stop5h 59m
Sun 12/62:47 pm -
1 stop5h 10m
Deal found 10/11![United Airlines logo]()
$348
This Delta deal was found by Cheapflights users on 10/11. 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 11/267:08 am -
1 stop6h 33m
Mon 12/71:19 pm -
2 stops9h 07m
Deal found 10/11![Delta logo]()
$354
This Delta deal was found by Cheapflights users on 10/11. 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 11/267:08 am -
1 stop6h 33m
Sat 12/51:19 pm -
1 stop7h 09m
Deal found 10/11![Delta logo]()
$447
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 October 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $348 (United Airlines) |
Popular in | November |
Cheapest in | May |
Average price | $433 |
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 7,457,451 searches. Data last updated October 14, 2026.
Use the filters below to find and compare flights from St. Louis to Great Falls that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Thu 11/12
9:40 am-9:38 pm
2 stops12h 58m
Great Falls
Sat 11/14
6:30 am-12:38 pm
1 stop5h 08m
$354
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Thu 11/12
7:08 am-12:41 pm
1 stop6h 33m
Great Falls
Sat 11/14
1:21 pm-9:18 pm
1 stop6h 57m
$358
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Wed 11/25
5:22 pm-12:41 pm
2 stops20h 19m
Great Falls
Sun 12/6
6:19 pm-12:46 am
1 stop5h 27m
$387
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Wed 11/25
5:22 pm-12:41 pm
2 stops20h 19m
Great Falls
Mon 12/7
6:19 pm-12:46 am
1 stop5h 27m
$387
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Tue 10/27
9:47 am-5:47 pm
2 stops9h 00m
Great Falls
Sat 10/31
5:40 am-1:32 pm
1 stop6h 52m
$424
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Thu 11/26
5:00 am-1:49 pm
2 stops9h 49m
Great Falls
Sun 12/6
6:30 am-6:16 pm
2 stops10h 46m
$467
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Wed 10/21
2:38 pm-10:29 pm
2 stops8h 51m
Great Falls
Mon 10/26
6:27 pm-12:44 am
1 stop5h 17m
$489
Quickest round-trip
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Fri 10/30
4:39 pm-9:38 pm
1 stop5h 59m
Great Falls
Thu 11/5
6:30 am-12:38 pm
1 stop5h 08m
$503
Sorted by cheapest first
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.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| 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 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.
STL-GTF
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 14, 2026.
Get a feel of what it's like to fly with 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.
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Food
7.2
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Crew
8.5
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
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.
Traveling to a place near Great Falls?
Book flights to Great Falls if you plan to visit one of these locationsShelby
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Other flights to Great Falls
Explore flights to Great Falls departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.
St. Louis and Great Falls flights
Browse other St. Louis and Great Falls flight options. Last updated on October 14, 2026.
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Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on October 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated October 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$261 | Average$493 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$303 | Average$458 | FlexibilityNo cancel fee | On-time69% |