When did momondo last update prices for flights from Lambert-St Louis Airport to Great Falls Airport?

Prices for flights from Lambert-St Louis Airport to Great Falls Airport refresh daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Great Falls Airport?

There are 2 operators available for flights from Lambert-St Louis Airport to Great Falls Airport as of October 2026.

How old do you have to be to fly from Lambert-St Louis Airport to Great Falls Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Great Falls Airport.

What documentation or ID do you need to fly to Great Falls Airport?

The necessary travel and health documents for your Great Falls Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$348 Cheap Flights from St. Louis to Great Falls in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Great Falls

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:39 pm - 9:38 pmSTL Lambert-St Louis-GTF Great Falls

5h 59m1 stop Denver Intl

2:45 pm - 8:59 pmGTF Great Falls-STL Lambert-St Louis

5h 14m1 stop Denver Intl

$348United Airlines

Tue, Nov 17 - Sat, Nov 21

8:50 am - 1:49 pmSTL Lambert-St Louis-GTF Great Falls

5h 59m1 stop Denver Intl

6:30 am - 12:38 pmGTF Great Falls-STL Lambert-St Louis

5h 08m1 stop Denver Intl

$348United Airlines

Thu, Nov 5 - Mon, Nov 9

7:45 am - 12:38 pmSTL Lambert-St Louis-GTF Great Falls

5h 53m1 stop Salt Lake City

6:27 pm - 9:17 amGTF Great Falls-STL Lambert-St Louis

13h 50m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$354Delta

Fri, Oct 30 - Thu, Nov 5

5:00 am - 1:49 pmSTL Lambert-St Louis-GTF Great Falls

9h 49m2 stops Chicago O'Hare Intl Denver Intl

6:30 am - 12:38 pmGTF Great Falls-STL Lambert-St Louis

5h 08m1 stop Denver Intl

$354United Airlines

Thu, Nov 5 - Mon, Nov 9

10:53 am - 9:38 pmSTL Lambert-St Louis-GTF Great Falls

11h 45m2 stops Chicago O'Hare Intl Denver Intl

2:45 pm - 8:59 pmGTF Great Falls-STL Lambert-St Louis

5h 14m1 stop Denver Intl

$354United Airlines

Tue, Nov 17 - Sat, Nov 21

12:00 pm - 10:29 pmSTL Lambert-St Louis-GTF Great Falls

11h 29m2 stops Atlanta Hartsfield-Jackson Salt Lake City

6:27 pm - 9:17 amGTF Great Falls-STL Lambert-St Louis

13h 50m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$359Delta

Fri, Oct 30 - Thu, Nov 5

2:38 pm - 10:29 pmSTL Lambert-St Louis-GTF Great Falls

8h 51m2 stops Detroit Metropolitan Wayne County Salt Lake City

6:27 pm - 9:17 amGTF Great Falls-STL Lambert-St Louis

13h 50m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$359Delta

Fri, Oct 30 - Thu, Nov 5

9:00 am - 1:41 pmSTL Lambert-St Louis-GTF Great Falls

5h 41m1 stop Denver Intl

2:45 pm - 8:59 pmGTF Great Falls-STL Lambert-St Louis

5h 14m1 stop Denver Intl

$383United Airlines

Wed, Oct 21 - Wed, Oct 28

2:21 pm - 10:30 pmSTL Lambert-St Louis-GTF Great Falls

9h 09m2 stops Detroit Metropolitan Wayne County Salt Lake City

6:19 pm - 9:00 amGTF Great Falls-STL Lambert-St Louis

13h 41m2 stops Salt Lake City Atlanta Hartsfield-Jackson

$389Delta

Tue, Nov 17 - Sat, Nov 21

3:54 pm - 3:28 pmSTL Lambert-St Louis-GTF Great Falls

24h 34m1 stop Seattle/Tacoma Intl

4:08 pm - 2:56 pmGTF Great Falls-STL Lambert-St Louis

21h 48m1 stop Seattle/Tacoma Intl

$482Alaska Airlines

Sat, Feb 6 - Tue, Feb 9

Cheap last minute flights

Enter your travel dates to find the best prices.

4:49 pm - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

5h 33m1 stop Denver Intl

2:37 pm - 11:44 pmGTF Great Falls-STL Lambert-St Louis

8h 07m1 stop Denver Intl

$548United Airlines

Sat, Oct 3 - Tue, Oct 6

11:35 am - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

10h 47m2 stops Chicago O'Hare Intl Denver Intl

2:37 pm - 11:44 pmGTF Great Falls-STL Lambert-St Louis

8h 07m1 stop Denver Intl

$554United Airlines

Sat, Oct 3 - Tue, Oct 6

6:47 am - 5:47 pmSTL Lambert-St Louis-GTF Great Falls

12h 00m2 stops Detroit Metropolitan Wayne County Salt Lake City

6:27 pm - 12:44 amGTF Great Falls-STL Lambert-St Louis

5h 17m1 stop Salt Lake City

$604Delta

Thu, Oct 8 - Mon, Oct 12

6:47 am - 5:47 pmSTL Lambert-St Louis-GTF Great Falls

12h 00m2 stops Detroit Metropolitan Wayne County Salt Lake City

1:18 pm - 11:21 pmGTF Great Falls-STL Lambert-St Louis

9h 03m2 stops Salt Lake City Minneapolis St Paul

$609Delta

Thu, Oct 8 - Mon, Oct 12

4:39 pm - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

5h 43m1 stop Denver Intl

2:37 pm - 11:44 pmGTF Great Falls-STL Lambert-St Louis

8h 07m1 stop Denver Intl

$729United Airlines

Thu, Oct 8 - Mon, Oct 12

9:04 am - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

13h 18m2 stops Chicago O'Hare Intl Denver Intl

6:15 am - 3:43 pmGTF Great Falls-STL Lambert-St Louis

8h 28m2 stops Denver Intl Chicago O'Hare Intl

$737United Airlines

Sat, Oct 3 - Tue, Oct 6

4:39 pm - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

5h 43m1 stop Denver Intl

2:37 pm - 8:36 pmGTF Great Falls-STL Lambert-St Louis

4h 59m1 stop Denver Intl

$1,046United Airlines

Sun, Oct 4 - Fri, Oct 9

4:39 pm - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

5h 43m1 stop Denver Intl

2:37 pm - 11:44 pmGTF Great Falls-STL Lambert-St Louis

8h 07m1 stop Denver Intl

$1,046United Airlines

Sun, Oct 4 - Thu, Oct 8

11:35 am - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

10h 47m2 stops Chicago O'Hare Intl Denver Intl

6:15 am - 12:40 pmGTF Great Falls-STL Lambert-St Louis

5h 25m1 stop Denver Intl

$1,052United Airlines

Sun, Oct 4 - Thu, Oct 8

7:30 am - 9:22 pmSTL Lambert-St Louis-GTF Great Falls

14h 52m2 stops Newark Denver Intl

2:37 pm - 8:36 pmGTF Great Falls-STL Lambert-St Louis

4h 59m1 stop Denver Intl

$1,052United Airlines

Sun, Oct 4 - Fri, Oct 9

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United Airlines flights from St. Louis to Great Falls

Our best United Airlines deals on St. Louis to Great Falls flight tickets

United Airlines

Nov 5

STL8:50 amLambert-St Louis

5h 59m

1 stop

GTF1:49 pmGreat Falls

Nov 9

GTF6:30 amGreat Falls

5h 08m

1 stop

STL12:38 pmLambert-St Louis

$348

United Airlines

Oct 21

STL9:00 amLambert-St Louis

5h 41m

1 stop

GTF1:41 pmGreat Falls

Oct 28

GTF2:45 pmGreat Falls

5h 14m

1 stop

STL8:59 pmLambert-St Louis

$383

United Airlines

Nov 5

STL5:00 amLambert-St Louis

9h 49m

2 stops

GTF1:49 pmGreat Falls

Nov 9

GTF6:30 amGreat Falls

8h 13m

2 stops

STL3:43 pmLambert-St Louis

$385

Delta flights from St. Louis to Great Falls

Our best Delta deals on St. Louis to Great Falls flight tickets

Delta

Oct 30

STL7:45 amLambert-St Louis

5h 53m

1 stop

GTF12:38 pmGreat Falls

Nov 5

GTF6:27 pmGreat Falls

13h 50m

2 stops

STL9:17 amLambert-St Louis

$354

Delta

Oct 30

STL2:38 pmLambert-St Louis

8h 51m

2 stops

GTF10:29 pmGreat Falls

Nov 5

GTF6:27 pmGreat Falls

13h 50m

2 stops

STL9:17 amLambert-St Louis

$359

Delta

Nov 17

STL2:21 pmLambert-St Louis

9h 09m

2 stops

GTF10:30 pmGreat Falls

Nov 21

GTF6:19 pmGreat Falls

13h 41m

2 stops

STL9:00 amLambert-St Louis

$389

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Tue 11/17

4:39 pm-9:38 pm

1 stop5h 59m

Great Falls

Sat 11/21

2:45 pm-8:59 pm

1 stop5h 14m

$348

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Thu 11/5

8:50 am-1:49 pm

1 stop5h 59m

Great Falls

Mon 11/9

6:30 am-12:38 pm

1 stop5h 08m

$348

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Fri 10/30

7:45 am-12:38 pm

1 stop5h 53m

Great Falls

Thu 11/5

6:27 pm-9:17 am

2 stops13h 50m

$354

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Thu 11/5

5:00 am-1:49 pm

2 stops9h 49m

Great Falls

Mon 11/9

6:30 am-12:38 pm

1 stop5h 08m

$354

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Tue 11/17

10:53 am-9:38 pm

2 stops11h 45m

Great Falls

Sat 11/21

2:45 pm-8:59 pm

1 stop5h 14m

$354

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Fri 10/30

12:00 pm-10:29 pm

2 stops11h 29m

Great Falls

Thu 11/5

6:27 pm-9:17 am

2 stops13h 50m

$359

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Fri 10/30

2:38 pm-10:29 pm

2 stops8h 51m

Great Falls

Thu 11/5

6:27 pm-9:17 am

2 stops13h 50m

$359

Quickest round-trip

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Wed 10/21

9:00 am-1:41 pm

1 stop5h 41m

Great Falls

Wed 10/28

2:45 pm-8:59 pm

1 stop5h 14m

$383

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Tue 11/17

2:21 pm-10:30 pm

2 stops9h 09m

Great Falls

Sat 11/21

6:19 pm-9:00 am

2 stops13h 41m

$389

St. LouisGreat Falls

STL Lambert-St Louis - GTF Great Falls

STLGTF

Lambert-St Louis

Sat 2/6

3:54 pm-3:28 pm

1 stop24h 34m

Great Falls

Tue 2/9

4:08 pm-2:56 pm

1 stop21h 48m

$482

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Great Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Great Falls?

The month of May is another great option to travel to Great Falls, with average flight prices from St. Louis averaging around $328.

When to book flights from St. Louis to Great Falls

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Great Falls according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Great Falls (STL to GTF) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Great Falls

Best Price Found	$348
Fastest flight time	5h 41m
Direct flights	None

The best flight deal from St. Louis to Great Falls found on momondo in the last 72 hours is $348

The fastest flight from St. Louis to Great Falls takes 5h 41m

There are no direct flights from St. Louis to Great Falls. There are no popular flight routes from St. Louis to Great Falls.

Search flight deals

Frequently asked questions about flying from St. Louis to Great Falls

How far is Lambert-St Louis to Great Falls by plane?
The distance between Lambert-St Louis and Great Falls is about 1222.4 mi. A reasonable flight in good conditions will take 5h 41m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Great Falls Airport?
Prices for flights from Lambert-St Louis Airport to Great Falls Airport refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Great Falls Airport?
There are 2 operators available for flights from Lambert-St Louis Airport to Great Falls Airport as of October 2026.
How old do you have to be to fly from Lambert-St Louis Airport to Great Falls Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Great Falls Airport.
What documentation or ID do you need to fly to Great Falls Airport?
The necessary travel and health documents for your Great Falls Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from St. Louis to Great Falls?
Based on momondo bookings for flights between St. Louis and Great Falls, the leading airline is United Airlines, making up 63% of the total bookings. Other popular airlines include Delta with 37%.

Best airlines flying from St. Louis to Great Falls

Compare and see reviews for airlines that fly from St. Louis to Great Falls with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $246	Free Cancellation	Rating 7.4 10,275 reviews		Search United Airlines flights
Delta	PriceFrom $261	Free Cancellation	Rating 7.8 8,623 reviews		Search Delta flights

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Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Great Falls?

It is quick and easy to find St. Louis to Great Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Great Falls that suits you.

Can I find flights from St. Louis to Great Falls with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Great Falls flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Great Falls?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Great Falls from St. Louis.

I’m not ready to book a flight from St. Louis to Great Falls right now. Can momondo alert me if prices change?

If you are not ready to book a flight from St. Louis to Great Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Great Falls and let you know when they change.