$378+ 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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — GTF
Dec 11 — Dec 181
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 November 11, 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 November 11, 2026.
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/88:40 am -
1 stop6h 09m
Tue 12/152:47 pm -
1 stop5h 10m
Deal found 11/8![United Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 11/8. 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 12/86:00 am -
2 stops12h 39m
Tue 12/155:35 am -
1 stop6h 46m
Deal found 11/8![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/108:40 am -
1 stop6h 09m
Thu 12/176:20 am -
2 stops10h 58m
Deal found 11/9![United Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 11/10. 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 12/107:08 am -
1 stop6h 31m
Sun 12/135:35 am -
1 stop6h 46m
Deal found 11/10![Delta logo]()
$403
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:08 am -
1 stop6h 33m
Thu 11/265:30 am -
1 stop8h 06m
Deal found 11/7![Delta logo]()
$448
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 November 11, 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 November 11, 2026.
This Delta deal was found by Cheapflights users on 11/10. 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 2/1910:15 am -
2 stops13h 17m
Mon 2/225:30 am -
1 stop6h 52m
Deal found 11/10![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/9. 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 11/248:50 am -
1 stop5h 59m
Sat 11/282:45 pm -
1 stop7h 54m
Deal found 11/9![United Airlines logo]()
$448
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Fri 2/193:04 pm -
1 stop26h 09m
Mon 2/224:55 pm -
1 stop20h 11m
Deal found 11/6![Alaska Airlines logo]()
$453
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/26:45 am -
2 stops11h 58m
Mon 4/56:20 pm -
2 stops12h 52m
Deal found 11/7![Delta logo]()
$389
This Delta deal was found by Cheapflights users on 11/10. 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 12/107:08 am -
1 stop6h 31m
Sun 12/135:35 am -
1 stop6h 46m
Deal found 11/10![Delta logo]()
$403
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/178:41 am -
1 stop6h 00m
Sun 12/206:20 am -
2 stops10h 58m
Deal found 11/9![United Airlines logo]()
$485
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/18:40 am -
1 stop6h 09m
Sat 12/56:30 am -
1 stop5h 23m
Deal found 11/9![United Airlines logo]()
$487
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:08 am -
1 stop6h 33m
Thu 11/265:30 am -
1 stop8h 06m
Deal found 11/7![Delta logo]()
$448
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/18:40 am -
1 stop6h 09m
Sun 12/66:30 am -
1 stop5h 23m
Deal found 11/9![United Airlines logo]()
$487
Last-minute flights from St. Louis to Great FallsDiscover last-minute flight deals from St. Louis to Great Falls. Data last updated November 11, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Great Falls. Data last updated November 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 11/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:08 am -
1 stop6h 33m
Thu 11/265:30 am -
1 stop8h 06m
Deal found 11/7![Delta logo]()
$448
This United Airlines deal was found by Cheapflights users on 11/8. 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 12/88:40 am -
1 stop6h 09m
Tue 12/152:47 pm -
1 stop5h 10m
Deal found 11/8![United Airlines logo]()
$378
This Delta deal was found by Cheapflights users on 11/8. 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 12/86:00 am -
2 stops12h 39m
Tue 12/155:35 am -
1 stop6h 46m
Deal found 11/8![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/9. 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 12/108:40 am -
1 stop6h 09m
Thu 12/176:20 am -
2 stops10h 58m
Deal found 11/9![United Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 11/10. 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 12/107:08 am -
1 stop6h 31m
Sun 12/135:35 am -
1 stop6h 46m
Deal found 11/10![Delta logo]()
$403
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 November 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $378 (United Airlines) |
Popular in | December |
Cheapest in | May |
Average price | $348 |
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 November 11, 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
Fri 2/19
10:15 am-10:32 pm
2 stops13h 17m
Great Falls
Mon 2/22
5:30 am-1:22 pm
1 stop6h 52m
$384
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Fri 4/2
6:45 am-5:43 pm
2 stops11h 58m
Great Falls
Mon 4/5
6:20 pm-8:12 am
2 stops12h 52m
$389
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Thu 12/10
7:08 am-12:39 pm
1 stop6h 31m
Great Falls
Sun 12/13
5:35 am-1:21 pm
1 stop6h 46m
$403
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Tue 11/24
8:50 am-1:49 pm
1 stop5h 59m
Great Falls
Sat 11/28
2:45 pm-11:39 pm
1 stop7h 54m
$448
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Sun 11/22
7:08 am-12:41 pm
1 stop6h 33m
Great Falls
Thu 11/26
5:30 am-2:36 pm
1 stop8h 06m
$448
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Fri 2/19
3:04 pm-4:13 pm
1 stop26h 09m
Great Falls
Mon 2/22
4:55 pm-2:06 pm
1 stop20h 11m
$453
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Thu 12/17
8:41 am-1:41 pm
1 stop6h 00m
Great Falls
Sun 12/20
6:20 am-6:18 pm
2 stops10h 58m
$485
Quickest round-trip
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Tue 12/1
8:40 am-1:49 pm
1 stop6h 09m
Great Falls
Sat 12/5
6:30 am-12:53 pm
1 stop5h 23m
$487
St. LouisGreat Falls
STL Lambert-St Louis - GTF Great Falls
STLGTF
Lambert-St Louis
Tue 12/1
8:40 am-1:49 pm
1 stop6h 09m
Great Falls
Sun 12/6
6:30 am-12:53 pm
1 stop5h 23m
$487
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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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 November 11, 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.
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Comfort
7.8
Crew
8.5
Food
7.2
Boarding
8.1
Overall
7.8
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 November 11, 2026.
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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 7,457,451 searches. Data last updated November 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$261 | Average$493 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$303 | Average$433 | FlexibilityNo cancel fee | On-time69% |