CA $275 Cheap Flights from St. Louis (STL) to Great Falls (GTF)

View CA $275 flight on Sat, Aug. 23, 2025Opens in a new window

Popular airlines from Lambert-St. Louis International Airport (STL) to Great Falls, MT (GTF-Great Falls Intl.)

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

Prices were available within the past 7 days and start at CA $275 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flight from St. Louis to Great Falls (STL - GTF) route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Great Falls Intl.
Distance
1940 km

St. Louis to Great Falls Flights

The easy way to book your flights from St. Louis to Great Falls 

With Expedia, it’s simple to find and book flights to Great Falls from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Great Falls Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from St. Louis to Great Falls today, tomorrow, or this week.  

 

Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Great Falls Intl., GTF 

Sort your search results by price to find great deals on your flight from St. Louis to Great Falls—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Great Falls from St. Louis currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Great Falls  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Great Falls from St. Louis 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Great Falls with Expedia today.

Frequently asked questions

How much is a flight from Lambert Field to GTF?
The lowest price advertised for a round-trip flight between STL and Great Falls Intl. Airport (GTF) is . But you better act quick. This figure is based on fares offered within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from STL to Great Falls Intl. Airport?
The majority of flights can be cancelled online, but whether you incur a fee depends on your airline. If you do need to cancel your escape, follow the instructions in the Customer Service Portal.
How do I find cheap flights from STL to GTF that have flexible change policies?
Plenty of airlines will allow you to move your flight without a change fee. All you pay is any additional cost for the new flight. When searching for Lambert Field to Great Falls Intl. Airport (GTF) flights, you'll find a "No change fees" filter for you to tick.
How many hours is the flight from STL to Great Falls Intl. Airport (GTF)?
There are lots of ways to make the 5 hours and 10 minutes between Lambert Field and GTF go by faster. Be productive and organize your camera roll or clear out all those backed-up emails. A snooze also helps pass the time!
How far is the flight from Lambert Field to Great Falls Intl. Airport (GTF)?
Expect to be in the air for a while, as the flight distance between St. Louis and Great Falls is 1,950 kilometres. Set up a playlist of your favourite tunes before you leave home to stay entertained during the journey.
Which airlines fly direct from Lambert-St. Louis Intl. Airport (STL) to Great Falls Intl. Airport (GTF)?
You won't find any airlines flying directly between Lambert Field and Great Falls Intl. Airport, so be ready to make at least one stop on your journey. A layover can be a nice way to break up a trip!
Are Lambert Field to GTF flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Lambert-St. Louis Intl. Airport (STL) to Great Falls Intl. Airport (GTF) at the last minute could be your ticket to a fantastic deal. However, it might cost you a whole lot more! If you'd rather not take any chances, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated all the time on Expedia.

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