Cheap flights from Butte to St. Louis from $450

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Butte to St. Louis departing on 2/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
9:14 am - 4:55 pm
BTM
-
STL
6h 41m
1 stop
United Airlines Logo
4:15 pm - 10:45 pm
STL
-
BTM
7h 30m
1 stop
$450United Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
9:14 am - 10:58 pm
BTM
-
STL
12h 44m
2 stops
United Airlines Logo
4:15 pm - 10:45 pm
STL
-
BTM
7h 30m
1 stop
$459United Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
9:14 am - 10:58 pm
BTM
-
STL
12h 44m
2 stops
United Airlines Logo
8:30 am - 10:45 pm
STL
-
BTM
15h 15m
2 stops
$465United Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
10:00 am - 11:43 pm
BTM
-
STL
12h 43m
1 stop
United Airlines Logo
1:30 pm - 10:22 pm
STL
-
BTM
9h 52m
1 stop
$629United Airlines
Thu, Jun 18 - Mon, Jun 22
United Airlines Logo
9:14 am - 10:58 pm
BTM
-
STL
12h 44m
2 stops
United Airlines Logo
6:00 am - 10:45 pm
STL
-
BTM
17h 45m
3 stops
$691United Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
10:00 am - 9:42 am
BTM
-
STL
22h 42m
2 stops
United Airlines Logo
1:30 pm - 10:22 pm
STL
-
BTM
9h 52m
1 stop
$722United Airlines
Thu, Jun 18 - Mon, Jun 22
United Airlines Logo
9:14 am - 10:58 pm
BTM
-
STL
12h 44m
2 stops
United Airlines Logo
6:00 am - 10:45 pm
STL
-
BTM
17h 45m
3 stops
$726United Airlines
Wed, Feb 4 - Sat, Feb 7
United Airlines Logo
10:00 am - 3:21 pm
BTM
-
STL
28h 21m
2 stops
United Airlines Logo
3:15 pm - 10:22 pm
STL
-
BTM
32h 07m
2 stops
$952United Airlines
Thu, Jun 18 - Mon, Jun 22

United Airlines flights from Butte to St. Louis

Our best United Airlines deals on Butte to St. Louis flight tickets
United Airlines
Feb 4
BTM9:14 amButte Silver Bow Co
6h 41m
1 stop
STL4:55 pmLambert-St Louis
Feb 7
STL4:15 pmLambert-St Louis
7h 30m
1 stop
BTM10:45 pmButte Silver Bow Co
$450
United Airlines
Feb 4
BTM9:14 amButte Silver Bow Co
12h 44m
2 stops
STL10:58 pmLambert-St Louis
Feb 7
STL4:15 pmLambert-St Louis
7h 30m
1 stop
BTM10:45 pmButte Silver Bow Co
$459
United Airlines
Feb 4
BTM9:14 amButte Silver Bow Co
12h 44m
2 stops
STL10:58 pmLambert-St Louis
Feb 7
STL8:30 amLambert-St Louis
15h 15m
2 stops
BTM10:45 pmButte Silver Bow Co
$465

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 January 25, 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

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-4:55 pm

1 stop6h 41m

Lambert-St Louis

Sat 2/7

4:15 pm-10:45 pm

1 stop7h 30m

$450

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-10:58 pm

2 stops12h 44m

Lambert-St Louis

Sat 2/7

4:15 pm-10:45 pm

1 stop7h 30m

$459

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-10:58 pm

2 stops12h 44m

Lambert-St Louis

Sat 2/7

8:30 am-10:45 pm

2 stops15h 15m

$465

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Thu 6/18

10:00 am-11:43 pm

1 stop12h 43m

Lambert-St Louis

Mon 6/22

1:30 pm-10:22 pm

1 stop9h 52m

$629

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-10:58 pm

2 stops12h 44m

Lambert-St Louis

Sat 2/7

6:00 am-10:45 pm

3 stops17h 45m

$691

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Thu 6/18

10:00 am-9:42 am

2 stops22h 42m

Lambert-St Louis

Mon 6/22

1:30 pm-10:22 pm

1 stop9h 52m

$722

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Wed 2/4

9:14 am-10:58 pm

2 stops12h 44m

Lambert-St Louis

Sat 2/7

6:00 am-10:45 pm

3 stops17h 45m

$726

ButteSt. Louis

BTM - STL

BTMSTL

Butte Silver Bow Co

Thu 6/18

10:00 am-3:21 pm

2 stops28h 21m

Lambert-St Louis

Mon 6/22

3:15 pm-10:22 pm

2 stops32h 07m

$952

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 airlines fly to St. Louis?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to St. Louis from Butte according to our data. United Airlines is the first choice among our users, with 52% 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

6h 41m

Direct flights

None
The fastest flight from Butte to St. Louis takes 6h 41m
There are no direct flights from Butte to St. Louis. There are no popular flight routes 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 6h 41m.

  • 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
Florissant
O'Fallon
Fenton
Collinsville
St. Peters
Wentzville
Alton
Farmington
Clayton
Eureka
Edwardsville
Festus
Glencoe
Litchfield
Shrewsbury

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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1 adult
Tue 2/24
Tue 3/3

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