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Cheap flights from Butte to St. Louis from $539

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Butte to St. Louis departing on 7/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Butte to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:15 am - 11:57 pm
BTM
-
STL
12h 42m
1 stop
United Airlines Logo
5:10 am - 10:30 pm
STL
-
BTM
18h 20m
1 stop
$829United Airlines
Sun, Jul 19 - Sat, Aug 1
United Airlines Logo
10:15 am - 12:11 pm
BTM
-
STL
24h 56m
2 stops
United Airlines Logo
5:10 am - 10:30 pm
STL
-
BTM
18h 20m
1 stop
$864United Airlines
Sun, Jul 19 - Sat, Aug 1
United Airlines Logo
10:15 am - 4:33 pm
BTM
-
STL
5h 18m
1 stop
United Airlines Logo
4:45 pm - 10:30 pm
STL
-
BTM
6h 45m
1 stop
$901United Airlines
Sun, Jul 19 - Sat, Aug 1
United Airlines Logo
10:15 am - 12:11 pm
BTM
-
STL
24h 56m
2 stops
United Airlines Logo
1:13 pm - 10:30 pm
STL
-
BTM
10h 17m
2 stops
$910United Airlines
Sun, Jul 19 - Sat, Aug 1
United Airlines Logo
10:15 am - 12:11 pm
BTM
-
STL
24h 56m
2 stops
United Airlines Logo
5:33 pm - 10:30 pm
STL
-
BTM
29h 57m
2 stops
$914United Airlines
Sun, Jul 19 - Sat, Aug 1

United Airlines flights from Butte to St. Louis

Our best United Airlines deals on Butte to St. Louis flight tickets
United Airlines
Jul 19
BTM10:15 amButte Silver Bow Co
12h 42m
1 stop
STL11:57 pmLambert-St Louis
Aug 1
STL5:10 amLambert-St Louis
18h 20m
1 stop
BTM10:30 pmButte Silver Bow Co
$829
United Airlines
Jul 19
BTM10:15 amButte Silver Bow Co
24h 56m
2 stops
STL12:11 pmLambert-St Louis
Aug 1
STL5:10 amLambert-St Louis
18h 20m
1 stop
BTM10:30 pmButte Silver Bow Co
$864
United Airlines
Jul 19
BTM10:15 amButte Silver Bow Co
5h 18m
1 stop
STL4:33 pmLambert-St Louis
Aug 1
STL4:45 pmLambert-St Louis
6h 45m
1 stop
BTM10:30 pmButte Silver Bow Co
$901

momondo Fare Finder

 
Customize your flight search to find flights from Butte to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated April 28, 2026.
Use the filters below to find and compare flights from Butte to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-11:57 pm

1 stop12h 42m

Lambert-St Louis

Sat 8/1

5:10 am-10:30 pm

1 stop18h 20m

$829

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-12:11 pm

2 stops24h 56m

Lambert-St Louis

Sat 8/1

5:10 am-10:30 pm

1 stop18h 20m

$864
Quickest round-trip

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-4:33 pm

1 stop5h 18m

Lambert-St Louis

Sat 8/1

4:45 pm-10:30 pm

1 stop6h 45m

$901

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-12:11 pm

2 stops24h 56m

Lambert-St Louis

Sat 8/1

1:13 pm-10:30 pm

2 stops10h 17m

$910

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-12:11 pm

2 stops24h 56m

Lambert-St Louis

Sat 8/1

5:33 pm-10:30 pm

2 stops29h 57m

$914
Cheapest one-way

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sat 7/25

9:48 am-4:33 pm

1 stop5h 45m

$539

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sat 7/25

9:48 am-9:26 pm

2 stops10h 38m

$544
Quickest one-way

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Sun 7/19

10:15 am-4:33 pm

1 stop5h 18m

$557

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from Butte to St. Louis

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 airline that flies from Butte Silver Bow Co to Lambert-St Louis?

United Airlines is the most popular carrier operating from Butte Silver Bow Co to Lambert-St Louis

What airlines fly to St. Louis?

Delta, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Butte according to our data. Delta is the first choice among our users, with 45% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 3 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Butte to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from Butte to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Butte to St. Louis (BTM to STL) flight deals and tips

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

Fastest flight time

9h 28m

Direct flights

None
The fastest flight from Butte to St. Louis takes 9h 28m
There are no direct flights from Butte to St. Louis. There are no popular flight routes from Butte to St. Louis.
Search flight deals

Frequently asked questions about flying from Butte to St. Louis

  • How far is Butte Silver Bow Co to Lambert-St Louis by plane?

    The distance between Butte Silver Bow Co and Lambert-St Louis is about 1243.5 mi. A reasonable flight in good conditions will take 9h 28m.

  • When did momondo last update prices for flights from Butte Silver Bow Co Airport to Lambert-St Louis Airport?

    Prices for flights from Butte Silver Bow Co Airport to Lambert-St Louis Airport are updated daily.

  • How old do you have to be to fly from Butte Silver Bow Co Airport to Lambert-St Louis 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 Butte Silver Bow Co Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Wentzville
Alton
Fenton
Farmington
Festus
Clayton
Eureka
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

Finding the right flight to St. Louis from Butte is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

momondo does allow users to show only those flights to St. Louis from Butte which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Butte and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to St. Louis from Butte. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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