STL - GTF

$320 Find Cheap Flights from St. Louis to Great Falls

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 10/25. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Great Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Great Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Great Falls, as well as popular online travel agencies
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Flights 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

Sat, Oct 25 - Wed, Oct 29
Delta Logo
5:30 pm - 11:06 pmSTL-GTF
6h 36m1 stop
Delta Logo
6:09 pm - 12:24 amGTF-STL
5h 15m1 stop
$320Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
Delta Logo
7:00 am - 12:28 pmSTL-GTF
6h 28m1 stop
Delta Logo
1:08 pm - 11:01 pmGTF-STL
8h 53m2 stops
$330Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
Delta Logo
6:00 am - 12:28 pmSTL-GTF
7h 28m2 stops
Delta Logo
1:08 pm - 11:01 pmGTF-STL
8h 53m2 stops
$335Delta
Find Deal
Wed, Sep 3 - Mon, Sep 8
Alaska Airlines Logo
3:35 pm - 3:49 pmSTL-GTF
25h 14m1 stop
Alaska Airlines Logo
4:29 pm - 2:39 pmGTF-STL
21h 10m1 stop
$396Alaska Airlines
Find Deal
Tue, Aug 19 - Sat, Aug 23
Delta Logo
9:17 am - 8:34 pmSTL-GTF
12h 17m2 stops
Delta Logo
6:06 pm - 12:38 amGTF-STL
5h 32m1 stop
$406Delta
Find Deal
Sat, Oct 25 - Wed, Oct 29
Alaska Airlines Logo
6:33 am - 5:35 pmSTL-GTF
12h 02m1 stop
Alaska Airlines Logo
6:50 pm - 3:18 pmGTF-STL
19h 28m1 stop
$419Alaska Airlines
Find Deal
Wed, Sep 3 - Mon, Sep 8
United Airlines Logo
9:17 am - 9:28 pmSTL-GTF
13h 11m2 stops
United Airlines Logo
2:35 pm - 8:46 pmGTF-STL
5h 11m1 stop
$456United Airlines
Find Deal
Wed, Sep 3 - Mon, Sep 8
United Airlines Logo
6:35 am - 9:28 pmSTL-GTF
15h 53m2 stops
United Airlines Logo
2:35 pm - 6:23 pmGTF-STL
26h 48m2 stops
$485United Airlines
Find Deal
Thu, Aug 14 - Mon, Aug 18
 Logo
2:30 pm - 9:36 amSTL-GTF
20h 06m2 stops
 Logo
11:11 am - 8:50 amGTF-STL
44h 39m3 stops
Thu, Aug 14 - Mon, Aug 18
 Logo
1:00 pm - 9:36 amSTL-GTF
21h 36m3 stops
 Logo
11:11 am - 8:50 amGTF-STL
44h 39m3 stops
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?

What’s the cheapest day of the week to fly from St. Louis to Great Falls?

The average price of all round-trip flights from St. Louis to Great Falls clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from St. Louis to Great Falls, look for departures on Wednesdays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from Great Falls, Wednesday is the cheapest day to fly and Thursday is the most expensive.

Good to know

Low seasonNovember
Cheapest flight$320
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly and prices are also 48% lower on average.
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 3 days, the lowest price for a flight from St. Louis to Great Falls was $320 for a round-trip ticket.

  • 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, oneworld, 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.

  • 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 airline 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.
7.4
United AirlinesOverall score based on 8896 reviews
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
7.3Comfort
Airline reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

8.0 ExcellentHal, Jul 2025IAD - MSY
Read more United Airlines reviews

Was on time until within 1 hour of flight-how does that happen? Staff very friendly.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

Our flight was understandably diverted to a small regional airport in Laramie, Wyoming due to weather conditions, which I fully recognize and appreciate. However, the low rating stems from the experience that followed: passengers remained on board for over an hour without the option to deplane and stretch, despite the aircraft being stationary. Although the pilot opened the cabin door, only he was permitted to exit. Meanwhile, passengers grew increasingly uncomfortable as warm summer air entered the cabin through the open door, and being in the second row meant we were impacted immediately. While the flight attendants made efforts to keep everyone at ease, I believe allowing passengers to deplane briefly, given the extended delay, would have significantly improved the overall experience.

I never flew. Flight was canceled. DIA worst airport in the country. Avoid at all costs.

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

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

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