STL - GTF

$334 Find Cheap Flights from St. Louis to Great Falls - Compare and Save

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Great Falls departing on 8/26. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$334
Typical prices: $396-$672
United Airlines
Wed 8/26Sun 8/30
STL - GTF • 2 stops
Cheapest one-way
$423
United Airlines
Thu 8/13
STL - GTF • 1 stop
Top airlines
Cheapest • from $334 (round-trip)
Best reviews • 7.8 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Great Falls. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $327 (round-trip)
Shortest trip • 5h 53m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Great Falls!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Great Falls (STL-GTF)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Great Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Great Falls

Wed, Aug 26 - Sun, Aug 30
United Airlines Logo
9:30 am - 9:12 pm
STL
-
GTF
12h 42m
2 stops
United Airlines Logo
2:25 pm - 8:46 pm
GTF
-
STL
5h 21m
1 stop
$334United Airlines
Sat, Aug 15 - Wed, Aug 19
Delta Logo
5:00 pm - 10:38 pm
STL
-
GTF
6h 38m
1 stop
Delta Logo
6:18 pm - 12:41 am
GTF
-
STL
5h 23m
1 stop
$398Delta
Thu, Aug 13 - Sat, Aug 22
United Airlines Logo
4:40 pm - 9:12 pm
STL
-
GTF
5h 32m
1 stop
United Airlines Logo
6:15 am - 12:40 pm
GTF
-
STL
5h 25m
1 stop
$399United Airlines
Wed, Aug 26 - Sun, Aug 30
United Airlines Logo
8:50 am - 9:12 pm
STL
-
GTF
13h 22m
2 stops
United Airlines Logo
6:15 am - 3:38 pm
GTF
-
STL
8h 23m
2 stops
$402United Airlines
Wed, Nov 4 - Sat, Nov 7
United Airlines Logo
8:50 am - 1:49 pm
STL
-
GTF
5h 59m
1 stop
United Airlines Logo
6:30 am - 12:38 pm
GTF
-
STL
5h 08m
1 stop
$418United Airlines
Wed, Aug 26 - Sun, Aug 30
Alaska Airlines Logo
3:04 pm - 4:38 pm
STL
-
GTF
26h 34m
1 stop
Alaska Airlines Logo
5:18 pm - 2:06 pm
GTF
-
STL
19h 48m
1 stop
$469Alaska Airlines
Thu, Aug 13 - Sat, Aug 22
Delta Logo
2:10 pm - 10:38 pm
STL
-
GTF
9h 28m
2 stops
Delta Logo
5:40 am - 2:47 pm
GTF
-
STL
8h 07m
2 stops
$509Delta
Fri, Oct 30 - Thu, Nov 5
Alaska Airlines Logo
4:42 pm - 4:35 pm
STL
-
GTF
24h 53m
1 stop
Alaska Airlines Logo
4:57 pm - 2:15 pm
GTF
-
STL
20h 18m
1 stop
$524Alaska Airlines
Sat, Aug 15 - Wed, Aug 19
Delta Logo
3:29 pm - 10:38 pm
STL
-
GTF
8h 09m
2 stops
Delta Logo
6:18 pm - 8:08 am
GTF
-
STL
12h 50m
2 stops
$589Delta
Thu, Aug 13 - Mon, Aug 17
Multiple Airlines Logo
7:10 pm - 9:29 am
STL
-
GTF
15h 19m
1 stop
Multiple Airlines Logo
10:19 am - 5:50 pm
GTF
-
STL
30h 31m
1 stop
$603Multiple Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Great Falls flights

Get data-powered insights and trends into flights from St. Louis to Great Falls to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Great Falls?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Great Falls departing in August.

Flight prices are below average for this route right now.

Flights to Great Falls from St. Louis usually cost between $396 and $672 in August.
The lowest price found in the past 5 days was $334 on United Airlines (Aug 26-Aug 30).

What is the cheapest month to fly from St. Louis to Great Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Great Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Great Falls is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $761 and $663 respectively.

Good to know

Low season

November

Cheapest flight

$334
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from St. Louis to Great Falls

When to book flights from St. Louis to Great Falls

Are your dates flexible? Find out the best times to travel from St. Louis to Great Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Great Falls

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

    In the last 5 days, the lowest price for a flight from St. Louis to Great Falls was $423 for a one-way ticket and $334 for a round-trip.

  • Do I need a passport to fly between St. Louis and Great Falls?

    No, a passport isn't needed to fly from St. Louis to Great Falls. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from St. Louis to Great Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Great Falls?

    SkyTeam, and Star Alliance are the airline alliances operating flights between St. Louis and Great Falls, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Great Falls, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Great Falls are Delta and United Airlines. With an average price for the route of $493 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $469 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Great Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Great Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Great Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Great Falls from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Great Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Great Falls with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and GTF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Great Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Great Falls from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Great Falls

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Great Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Great Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
DeltaOverall score based on 8494 reviews
7.2Food
7.8Entertainment
8.5Crew
8.1Boarding
7.8Comfort
Airline reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

10.0 ExcellentJon, Jul 2026
MCI - SLC
Read more Delta reviews

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

One of the best crews and best flights I’ve ever had! Really great experience

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

The bus ride from the terminal to board the plane is uncomfortable and stressful when making a connection.

I almost missed my connection in Chicago due to having to wait on a gate to be open I am assuming. Having to run from E terminal to C terminal and I barely made it there before they closed the door. This may not be the actual airline's fault it's crazy how there is so little time between flight especially when they are placed so far apart in the airport.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

Fine not above and beyond as I had a connection that was delayed due to maintenance

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Sitting on the runway after we land for almost two hours! Not sure if we should blame United or Just Dumpy Vance.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Please please take consideration when setting cabin temperature. The vents were not functional and it was over 70 degrees in the cabin during the winter months when most people are used to much cooler indoor temperatures. I was down to my white t-shirt and the sweat pants I wore from Auckland to San Francisco and was sweating profusely and there was NO VENT!

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

Everything you need to know for your flight from St. Louis to Great Falls

Information on your arrival and departure airports