STL - BTM

$399 Find Cheap Flights from St. Louis to Butte

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Butte departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Butte

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Butte, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Butte, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$399
United Airlines
Sat 4/11Wed 4/15
STL - BTM • 2 stops
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Butte. You'll need at least 1 connection.
Insights
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Insights
Top layover airports
Denver (DEN)
Cheapest • Avg $505 (round-trip)
Minneapolis (MSP)
Shortest trip • 4h 55m (one-way)
Insights
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We hope you love your trip to Butte!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Butte (STL-BTM)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Butte that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Butte

Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
9:16 am - 10:22 pm
STL
-
BTM
14h 06m
2 stops
United Airlines Logo
9:37 am - 4:56 pm
BTM
-
STL
6h 19m
1 stop
$399United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
9:16 am - 10:22 pm
STL
-
BTM
14h 06m
2 stops
United Airlines Logo
9:37 am - 11:11 pm
BTM
-
STL
12h 34m
2 stops
$404United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
2:40 pm - 10:22 pm
STL
-
BTM
8h 42m
1 stop
United Airlines Logo
9:37 am - 4:56 pm
BTM
-
STL
6h 19m
1 stop
$423United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
8:54 am - 10:22 pm
STL
-
BTM
14h 28m
1 stop
United Airlines Logo
9:37 am - 4:56 pm
BTM
-
STL
6h 19m
1 stop
$432United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
8:54 am - 10:22 pm
STL
-
BTM
14h 28m
1 stop
United Airlines Logo
9:37 am - 11:11 pm
BTM
-
STL
12h 34m
2 stops
$433United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
6:30 am - 10:22 pm
STL
-
BTM
16h 52m
2 stops
United Airlines Logo
9:37 am - 11:11 pm
BTM
-
STL
12h 34m
2 stops
$438United Airlines
Fri, Mar 20 - Mon, Mar 23
United Airlines Logo
2:50 pm - 10:26 pm
STL
-
BTM
8h 36m
1 stop
United Airlines Logo
10:00 am - 4:49 pm
BTM
-
STL
5h 49m
1 stop
$458United Airlines
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
6:00 am - 10:22 pm
STL
-
BTM
17h 22m
3 stops
United Airlines Logo
9:37 am - 9:13 pm
BTM
-
STL
10h 36m
2 stops
$531United Airlines
Fri, Mar 20 - Mon, Mar 23
United Airlines Logo
2:50 pm - 10:26 pm
STL
-
BTM
8h 36m
1 stop
United Airlines Logo
10:00 am - 4:23 pm
BTM
-
STL
29h 23m
2 stops
$582United Airlines
Fri, Mar 20 - Mon, Mar 23
United Airlines Logo
11:25 am - 10:26 pm
STL
-
BTM
12h 01m
2 stops
United Airlines Logo
10:00 am - 10:16 pm
BTM
-
STL
11h 16m
2 stops
$1,002United Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Butte flights

Get data-powered insights and trends into flights from St. Louis to Butte to help you find the cheapest flights, the best time to fly and much more.

What is the most popular layover airport when flying from St. Louis to Butte?

Percentage of 1-stop round-trip flights from St. Louis to Butte chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Denver (DEN) is the top choice – 92% of KAYAK users who clicked on 1-stop flights from St. Louis to Butte picked an itinerary connecting there.

What is the cheapest layover airport when flying from St. Louis to Butte?

Average round-trip price for 1-stop flights from St. Louis to Butte clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $505.

Which layover airport offers the shortest total travel time from St. Louis to Butte?

Shortest average total travel time for 1-stop one-way flights from St. Louis to Butte via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Minneapolis (MSP) for the shortest journey. The average one-way travel time for flights connecting there is 4h 55m.

Which layover airport has the quickest connection when flying from St. Louis to Butte?

Average layover duration at different layover airports for 1-stop one-way flights from St. Louis to Butte, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Minneapolis (MSP) often has the shortest layovers from St. Louis to Butte, with an average of 0h 47m.

Good to know

Cheapest flight$399
Flight from St. Louis to Butte

When to book flights from St. Louis to Butte

Are your dates flexible? Find out the best times to travel from St. Louis to Butte based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Butte

  • What is the cheapest flight from St. Louis to Butte?

    In the last 3 days, the lowest price for a flight from St. Louis to Butte was $399 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Butte?

    A passport is not required to fly from St. Louis to Butte.

  • Which airports will I be using when flying from St. Louis to Butte?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Butte, also known as Butte Silver Bow Co.

  • Which aircraft models fly most regularly from St. Louis to Butte?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Butte?

    Star Alliance is the only airline alliance operating flights between St. Louis and Butte.

  • How does KAYAK find such low prices on flights from St. Louis to Butte?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Butte.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Butte?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Butte from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Butte?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Butte with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BTM can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Butte?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Butte from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from St. Louis to Butte

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Butte. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Butte? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9370 reviews
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
8.1Crew
Airline reviews

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

6.0 GoodValerie, Feb 2026
CLE - EWR
Read more United Airlines reviews

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Everything you need to know for your flight from St. Louis to Butte

Information on your arrival and departure airports