CA $362 Cheap Flights from Great Falls (GTF) to St. Louis (STL)

View CA $362 flight on Sat, Jul. 12, 2025Opens in a new window

Featured airlines

Air Canada
Air Transat
WestJet
American Airlines
Flair Airlines
Philippine Airlines
Air India
Lufthansa
Caribbean Airlines

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at CA $362 for one-way flights and CA $787 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat., Jul. 12 - Sat., Jul. 19
GTF
Great Falls
STL
St. Louis
CA $787 Roundtrip, found 4 days ago
CA $787
Roundtrip
found 4 days ago
Select Delta flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Sat., Jul. 19, priced at CA $787 found 4 days ago
United
Wed., Jul. 9 - Wed., Jul. 16
GTF
Great Falls
STL
St. Louis
CA $807 Roundtrip, found 4 days ago
CA $807
Roundtrip
found 4 days ago
Select United flight, departing Wed., Jul. 9 from Great Falls to St. Louis, returning Wed., Jul. 16, priced at CA $807 found 4 days ago
United
Wed., Jul. 9 - Thu., Jul. 17
GTF
Great Falls
STL
St. Louis
CA $815 Roundtrip, found 4 days ago
CA $815
Roundtrip
found 4 days ago
Select United flight, departing Wed., Jul. 9 from Great Falls to St. Louis, returning Thu., Jul. 17, priced at CA $815 found 4 days ago
Delta
Sat., Jul. 12 - Tue., Jul. 22
GTF
Great Falls
STL
St. Louis
CA $817 Roundtrip, found 4 days ago
CA $817
Roundtrip
found 4 days ago
Select Delta flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Tue., Jul. 22, priced at CA $817 found 4 days ago
United
Wed., Jul. 9 - Sat., Jul. 19
GTF
Great Falls
STL
St. Louis
CA $822 Roundtrip, found 4 days ago
CA $822
Roundtrip
found 4 days ago
Select United flight, departing Wed., Jul. 9 from Great Falls to St. Louis, returning Sat., Jul. 19, priced at CA $822 found 4 days ago
United
Sat., Jul. 12 - Fri., Jul. 18
GTF
Great Falls
STL
St. Louis
CA $830 Roundtrip, found 4 days ago
CA $830
Roundtrip
found 4 days ago
Select United flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Fri., Jul. 18, priced at CA $830 found 4 days ago
United
Sat., Jul. 12 - Sat., Jul. 19
GTF
Great Falls
STL
St. Louis
CA $838 Roundtrip, found 4 days ago
CA $838
Roundtrip
found 4 days ago
Select United flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Sat., Jul. 19, priced at CA $838 found 4 days ago
Delta
Sat., Jul. 12 - Sat., Jul. 19
GTF
Great Falls
STL
St. Louis
CA $845 Roundtrip, found 4 days ago
CA $845
Roundtrip
found 4 days ago
Select Delta flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Sat., Jul. 19, priced at CA $845 found 4 days ago
Alaska Airlines
Sat., Jul. 12 - Sat., Jul. 19
GTF
Great Falls
STL
St. Louis
CA $2,041 Roundtrip, found 4 days ago
CA $2,041
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat., Jul. 12 from Great Falls to St. Louis, returning Sat., Jul. 19, priced at CA $2,041 found 4 days ago
Flight from Great Falls to St. Louis (GTF - STL) route information
Origin airport
Great Falls Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
CA $787
Distance
1940 km

Great Falls to St. Louis Flights

Ready for an adventure? Thought so! Prepare to see the sights when you book your trip from Great Falls to St. Louis with Expedia.ca. Whether you’re visiting for business or pleasure, we know how important it is to bring home travel stories. Maybe your tales will include the best dinner of your life, or the weirdest street art you saw in the city, or the concert that turned you into a fan of a new band. Whatever it is, your new favourite anecdote is right around the corner. Book your trip from GTF to STL and begin your journey!

Getting a cheap deal on your trip sets the tone for the perfect holiday. And with Expedia.ca, you know you can travel from Great Falls to St. Louis on the cheap, with enough money left over for a stellar time in the city. That could mean more tours with the kids, more concerts with the spouse, more dessert amongst co-workers, or even front row seats to a sports game if you’re travelling solo. It’s your holiday! Make it great.

Travelling shouldn’t cost an arm and a leg before you even get to relax on the plane’s armrests. Count on Expedia.ca to get you the best discounts on flights from GTF to STL. And remember this: You can also save big when you bundle. Add a hotel or car rental deal to your flight and witness those savings add up. Hey, more money for more souvenirs, right? Right! Pack your bags and we’ll see you on the route.

Combine your St. Louis flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from with Expedia Canada. Use us as your top travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from GTF to Lambert Field?
Round-trip journeys between GTF and St. Louis Lambert International Airport start from CA $787. This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book ASAP so you don’t miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from GTF to STL?
Most flights can be canceled online, but whether you are charged a fee varies between airlines. If you do have to cancel your getaway, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from GTF to Lambert Field that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for GTF to St. Louis Lambert International Airport flights, you’ll see a “no change fees” filter for you to select.
How many hours is the flight from Great Falls Intl. Airport to STL?
Consider bringing your own entertainment (like some downloaded podcasts), as it takes an average of 4 hours and 37 minutes to fly to St. Louis Lambert International Airport from Great Falls Intl. Airport. A good pair of noise-canceling headphones will be handy too.
How far is the flight from Great Falls Intl. Airport to Lambert-St. Louis Intl. Airport (STL)?
It’s around 1,950 kilometers from Great Falls Intl. Airport to Lambert-St. Louis Intl. Airport (STL), so you’ll be up in the air for a while. Keep yourself entertained with things like playing cards (if you’re traveling with friends) or the latest bestseller.
Which airlines fly direct from Great Falls Intl. Airport (GTF) to Lambert-St. Louis Intl. Airport (STL)?
There are no direct flights, so you’ll have to make at least one stop between Great Falls Intl. Airport and St. Louis Lambert International Airport. Take advantage of the layover time to stretch your legs and freshen up.
Are Great Falls Intl. Airport (GTF) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Airline tickets from GTF to STL are available up to 12 months before departure on Expedia. And although you may occasionally pick up a fantastic last-minute deal, it’s never something you can count on. Also, booking your flights ahead of time means you’ll have more options — and you can avoid landing the dreaded middle seat! We frequently update our fares to bring you the biggest bargains, so keep checking in for all the latest specials.
*Available to Expedia members.