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 is 1 operator available for flights from Lambert-St Louis Airport to Great Falls Airport as of August 2025.

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.

$210 Cheap Flights from St. Louis to Great Falls (STL-GTF) in 2025

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Great Falls (STL-GTF)

Round-trip

One-way

Cheap round-trip flights

6:50 am - 12:28 pmSTL-GTF

6h 38m1 stop

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$396Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

6:50 am - 12:28 pmSTL-GTF

6h 38m1 stop

5:30 am - 3:31 pmGTF-STL

9h 01m2 stops

$406Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

3:57 pm - 5:35 pmSTL-GTF

26h 38m1 stop

6:15 pm - 12:03 amGTF-STL

28h 48m1 stop

$430Alaska Airlines

Find Deal

Thu, Oct 16 - Sun, Oct 19

6:00 am - 5:29 pmSTL-GTF

12h 29m2 stops

1:08 pm - 11:06 pmGTF-STL

8h 58m2 stops

$439Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

6:50 am - 12:28 pmSTL-GTF

6h 38m1 stop

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$444Delta

Find Deal

Thu, Oct 16 - Sun, Oct 19

6:00 am - 5:29 pmSTL-GTF

12h 29m2 stops

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$454Delta

Find Deal

Thu, Oct 16 - Sun, Oct 19

6:00 am - 5:29 pmSTL-GTF

12h 29m2 stops

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$462Delta

Find Deal

Thu, Oct 16 - Sun, Oct 19

8:53 am - 11:06 pmSTL-GTF

15h 13m2 stops

5:30 am - 3:31 pmGTF-STL

9h 01m2 stops

$466Delta

Find Deal

Sat, Oct 25 - Wed, Oct 29

6:00 am - 5:29 pmSTL-GTF

12h 29m2 stops

6:09 pm - 12:24 amGTF-STL

5h 15m1 stop

$524Delta

Find Deal

Thu, Oct 16 - Sun, Oct 19

10:10 am - 5:35 pmSTL-GTF

32h 25m2 stops

6:15 pm - 11:05 pmGTF-STL

27h 50m2 stops

$586Alaska Airlines

Find Deal

Thu, Oct 16 - Sun, Oct 19

Delta flights from St. Louis to Great Falls

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

Delta

Oct 25

STL6:50 amLambert-St Louis

6h 38m

1 stop

GTF12:28 pmGreat Falls

Oct 29

GTF6:09 pmGreat Falls

5h 15m

1 stop

STL12:24 amLambert-St Louis

$396

Find similar

Delta

Oct 25

STL6:50 amLambert-St Louis

6h 38m

1 stop

GTF12:28 pmGreat Falls

Oct 29

GTF5:30 amGreat Falls

9h 01m

2 stops

STL3:31 pmLambert-St Louis

$406

Find similar

Delta

Oct 25

STL6:00 amLambert-St Louis

12h 29m

2 stops

GTF5:29 pmGreat Falls

Oct 29

GTF1:08 pmGreat Falls

8h 58m

2 stops

STL11:06 pmLambert-St Louis

$439

Find similar

Alaska Airlines flights from St. Louis to Great Falls

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

Alaska Airlines

Oct 16

STL3:57 pmLambert-St Louis

26h 38m

1 stop

GTF5:35 pmGreat Falls

Oct 19

GTF6:15 pmGreat Falls

28h 48m

1 stop

STL12:03 amLambert-St Louis

$430

Find similar

Alaska Airlines

Oct 16

STL10:10 amLambert-St Louis

32h 25m

2 stops

GTF5:35 pmGreat Falls

Oct 19

GTF6:15 pmGreat Falls

27h 50m

2 stops

STL11:05 pmLambert-St Louis

$586

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 10/25

6:50 am-12:28 pm

1 stop6h 38m

Great Falls

Wed 10/29

6:09 pm-12:24 am

1 stop5h 15m

$396

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 10/25

6:50 am-12:28 pm

1 stop6h 38m

Great Falls

Wed 10/29

5:30 am-3:31 pm

2 stops9h 01m

$406

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

3:57 pm-5:35 pm

1 stop26h 38m

Great Falls

Sun 10/19

6:15 pm-12:03 am

1 stop28h 48m

$430

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 10/25

6:00 am-5:29 pm

2 stops12h 29m

Great Falls

Wed 10/29

1:08 pm-11:06 pm

2 stops8h 58m

$439

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

6:50 am-12:28 pm

1 stop6h 38m

Great Falls

Sun 10/19

6:09 pm-12:24 am

1 stop5h 15m

$444

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

6:00 am-5:29 pm

2 stops12h 29m

Great Falls

Sun 10/19

6:09 pm-12:24 am

1 stop5h 15m

$454

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

6:00 am-5:29 pm

2 stops12h 29m

Great Falls

Sun 10/19

6:09 pm-12:24 am

1 stop5h 15m

$462

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Sat 10/25

8:53 am-11:06 pm

2 stops15h 13m

Great Falls

Wed 10/29

5:30 am-3:31 pm

2 stops9h 01m

$466

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

6:00 am-5:29 pm

2 stops12h 29m

Great Falls

Sun 10/19

6:09 pm-12:24 am

1 stop5h 15m

$524

St. LouisGreat Falls

STL - GTF

STLGTF

Lambert-St Louis

Thu 10/16

10:10 am-5:35 pm

2 stops32h 25m

Great Falls

Sun 10/19

6:15 pm-11:05 pm

2 stops27h 50m

$586

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 day to depart on your flight to Great Falls?

The cheapest day to depart on your flight to Great Falls is on a Wednesday when prices can be found for as low as $405. This is often the case because there is less demand to fly during this day of the week. On the other hand, Friday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $714.

What is the cheapest time of day to depart on your flight to Great Falls?

According to our data, the cheapest time of day to fly to Great Falls is in the morning. momondo users have found flights departing from St. Louis to Great Falls in the morning for as low as $538. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $644 on average. Flights to Great Falls from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Direct flights	None

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

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 6h 38m.
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 is 1 operator available for flights from Lambert-St Louis Airport to Great Falls Airport as of August 2025.
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 100% of the total bookings.

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 $298	Free Cancellation	Rating 7.4 8,940 reviews		Search United Airlines flights

Shelby

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.