STL - GTF

$275 Find Cheap Flights from St. Louis to Great Falls - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$368
Typical prices: $338-$591
Delta
Fri 1/12Mon 1/22
STL - GTF • 1 stop
Cheapest one-way
$275
Typical prices: $314-$515
Alaska Airlines
Tue 12/18
STL - GTF • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Great Falls. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
May
Cheapest • 28% price drop
June
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Seattle/Tacoma Intl (SEA)
Cheapest • Avg $327 (round-trip)
Denver Intl (DEN)
Shortest trip • 5h 38m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

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

 
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Tue, Jan 12 - Sun, Jan 17
Delta Logo
7:05 am - 12:42 pmSTL  Lambert-St Louis-GTF Great Falls
6h 37m1 stop Salt Lake City
Delta Logo
5:30 am - 1:26 pmGTF  Great Falls-STL Lambert-St Louis
6h 56m1 stop Salt Lake City
$368Delta
Sat, Jan 16 - Sun, Jan 17
Delta Logo
7:05 am - 12:42 pmSTL  Lambert-St Louis-GTF Great Falls
6h 37m1 stop Salt Lake City
Delta Logo
5:30 am - 1:26 pmGTF  Great Falls-STL Lambert-St Louis
6h 56m1 stop Salt Lake City
$368Delta
Thu, Dec 10 - Sun, Dec 13
United Airlines Logo
2:50 pm - 9:13 pmSTL  Lambert-St Louis-GTF Great Falls
7h 23m1 stop Denver Intl
United Airlines Logo
6:30 am - 12:53 pmGTF  Great Falls-STL Lambert-St Louis
5h 23m1 stop Denver Intl
$368United Airlines
Sun, Jan 31 - Sat, Feb 6
United Airlines Logo
8:52 am - 1:36 pmSTL  Lambert-St Louis-GTF Great Falls
5h 44m1 stop Denver Intl
United Airlines Logo
2:32 pm - 8:38 pmGTF  Great Falls-STL Lambert-St Louis
5h 06m1 stop Denver Intl
$368United Airlines
Fri, Jan 15 - Wed, Jan 20
United Airlines Logo
3:10 pm - 9:42 pmSTL  Lambert-St Louis-GTF Great Falls
7h 32m1 stop Denver Intl
United Airlines Logo
6:25 am - 1:21 pmGTF  Great Falls-STL Lambert-St Louis
5h 56m1 stop Denver Intl
$368United Airlines
Sat, Jan 16 - Wed, Jan 20
Delta Logo
7:05 am - 12:42 pmSTL  Lambert-St Louis-GTF Great Falls
6h 37m1 stop Salt Lake City
Delta Logo
1:22 pm - 9:42 pmGTF  Great Falls-STL Lambert-St Louis
7h 20m1 stop Salt Lake City
$368Delta
Tue, Jan 12 - Fri, Jan 22
Delta Logo
7:05 am - 12:42 pmSTL  Lambert-St Louis-GTF Great Falls
6h 37m1 stop Salt Lake City
Delta Logo
1:22 pm - 9:42 pmGTF  Great Falls-STL Lambert-St Louis
7h 20m1 stop Salt Lake City
$368Delta
Fri, Feb 19 - Mon, Feb 22
Alaska Airlines Logo
3:04 pm - 4:13 pmSTL  Lambert-St Louis-GTF Great Falls
26h 09m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:55 pm - 2:06 pmGTF  Great Falls-STL Lambert-St Louis
20h 11m1 stop Seattle/Tacoma Intl
$453Alaska Airlines
Fri, Dec 18 - Sun, Jan 3
Alaska Airlines Logo
6:00 am - 4:32 pmSTL  Lambert-St Louis-GTF Great Falls
11h 32m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
5:12 pm - 3:34 pmGTF  Great Falls-STL Lambert-St Louis
21h 22m1 stop Seattle/Tacoma Intl
$483Alaska Airlines
Tue, Jan 12 - Mon, Jan 18
Alaska Airlines Logo
3:54 pm - 3:28 pmSTL  Lambert-St Louis-GTF Great Falls
24h 34m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
4:08 pm - 2:56 pmGTF  Great Falls-STL Lambert-St Louis
21h 48m1 stop Seattle/Tacoma Intl
$677Alaska Airlines
Booking Insights

Price, demand and travel trends for St. Louis to Great Falls flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Round-trip flights from St. Louis to Great Falls typically range from $338 to $591. The lowest price found in the past 5 days was $368, on Delta.

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

Based on deals KAYAK users found in the last 12 months, Friday is the cheapest day of the week to fly from St. Louis to Great Falls. It’s 28% cheaper than the average day, while Thursday is the most expensive, with prices 29% higher.

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Key details for St. Louis to Great Falls flights

Low season

December

Cheapest flight

$275
Beat the crowds with an average 79% drop in travelers.
The most popular month to fly with an average 90% increase in travelers.
One-way 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

Your St. Louis to Great Falls flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Great Falls?

    Only Economy Class is available on flights from St. Louis to Great Falls.

  • How long is a flight from St. Louis to Great Falls?

    A nonstop flight from St. Louis to Great Falls takes 00m, covering 1,212 miles.

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

    No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

  • How much should I expect to pay for a St. Louis to Great Falls flight?

    Round-trip flights from St. Louis to Great Falls range from $338 to $591, with an average of $458 over the past 12 months. Anything below $338 counts as a good deal.

  • Have flight prices from St. Louis to Great Falls changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $368 to $1,082. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from St. Louis to Great Falls looking right now?

    One-way fares from St. Louis to Great Falls are currently higher than usual. Average one-way flight prices are about $462, which is 27% above the typical average for this route.

  • What car rental options are available at Great Falls Airport (GTF)?

    Great Falls Airport (GTF) hosts 5 major car rental companies, with daily rates averaging $92 for economy cars. Top options include:

    • Avis
    • Budget
    • Alamo
    • Hertz
    • Enterprise Rent-A-Car

  • Which airports can I use when flying from St. Louis to Great Falls?

    Flights from St. Louis to Great Falls usually depart from Lambert-St Louis (STL) and arrive at Great Falls (GTF).

  • Which airports do connecting flights from St. Louis to Great Falls pass through?

    One-stop flights from St. Louis to Great Falls most commonly connect through:

    • Denver Intl (DEN) - 62% of one-stop connections
    • Salt Lake City (SLC) - 30% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 8% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Great Falls?

    Yes. Flexible dates can save you up to 45% on flights from St. Louis to Great Falls. Friday is the cheapest departure day at $330 round-trip on average, while Thursday is the most expensive at $591, a difference of $261.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from St. Louis to Great Falls?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 5h 38m, compared with 6h 07m via Salt Lake City (SLC) and 21h 36m via Seattle/Tacoma Intl (SEA).

  • What is the time difference between St. Louis and Great Falls?

    Great Falls is 1 hour behind St. Louis (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

Your guide to booking St. Louis to Great Falls flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Friday departure and avoid flying on Thursday. On this route, Friday flights average $330, about $261 less than Thursday fares (44% savings) based on the last 12 months.
  • If you can choose when to travel, plan your St. Louis to Great Falls trip for May. Fares historically average $328 round-trip in that month - typically $514 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Great Falls Airport.

    • Crystal Inn Hotel & Suites - Great Falls
    • Holiday Inn Express & Suites Great Falls By IHG
    • Comfort Inn & Suites Market - Airport

More options for your flight from St. Louis to Great Falls

Complete your trip to Great Falls with a hotel stay or car rental

Car rentals in Great Falls
Hotels in Great Falls
Vacations in Great Falls