STL - GTF

$328 Find Cheap Flights from St. Louis to Great Falls

This is the cheapest one-way 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 1/1. 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

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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Everything you should know

Cheapest round-trip
$412
Alaska Airlines
Sat 1/31Wed 2/4
STL - GTF • 1 stop
Cheapest one-way
$328
United Airlines
Thu 1/1
STL - GTF • 1 stop
Top airlines
Alaska Airlines
Cheapest • from $412 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+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

Sat, Jan 31 - Wed, Feb 4
Alaska Airlines Logo
6:19 pm - 5:19 pm
STL
-
GTF
24h 00m1 stop
Alaska Airlines Logo
5:59 pm - 1:54 pm
GTF
-
STL
18h 55m1 stop
$412Alaska Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
6:30 am - 9:53 pm
STL
-
GTF
16h 23m2 stops
United Airlines Logo
6:10 am - 8:58 pm
GTF
-
STL
13h 48m1 stop
$508United Airlines
Wed, Jan 28 - Sat, Jan 31
United Airlines Logo
8:05 am - 9:53 pm
STL
-
GTF
14h 48m2 stops
United Airlines Logo
6:10 am - 9:13 pm
GTF
-
STL
14h 03m2 stops
$528United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
4:15 pm - 9:43 pm
STL
-
GTF
6h 28m1 stop
United Airlines Logo
2:29 pm - 2:30 pm
GTF
-
STL
23h 01m2 stops
$551United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
8:30 am - 9:43 pm
STL
-
GTF
14h 13m2 stops
United Airlines Logo
2:29 pm - 8:58 pm
GTF
-
STL
5h 29m1 stop
$552United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
7:00 am - 9:43 pm
STL
-
GTF
15h 43m2 stops
United Airlines Logo
2:29 pm - 2:30 pm
GTF
-
STL
23h 01m2 stops
$556United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
9:57 am - 9:43 pm
STL
-
GTF
12h 46m2 stops
United Airlines Logo
2:29 pm - 2:30 pm
GTF
-
STL
23h 01m2 stops
$586United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
6:00 am - 9:43 pm
STL
-
GTF
16h 43m3 stops
United Airlines Logo
2:29 pm - 2:30 pm
GTF
-
STL
23h 01m2 stops
$658United Airlines
Sat, Jan 31 - Wed, Feb 4
United Airlines Logo
6:00 am - 9:43 pm
STL
-
GTF
16h 43m3 stops
United Airlines Logo
2:29 pm - 2:30 pm
GTF
-
STL
23h 01m2 stops
$678United Airlines
Mon, Dec 29 - Fri, Jan 2
United Airlines Logo
6:35 pm - 10:46 pm
STL
-
GTF
29h 11m2 stops
United Airlines Logo
2:35 pm - 10:22 pm
GTF
-
STL
6h 47m1 stop
$1,028United 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.

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

Cheapest flight$328
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 $328 for a one-way ticket and $412 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?

    Star Alliance is the only airline alliance operating flights between St. Louis and Great Falls.

  • 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 9094 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

10.0 ExcellentMichele, Dec 2025
RSW - ORD
Read more United Airlines reviews

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

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

Information on your arrival and departure airports