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Cheap flights from St. Louis to Billings from $296

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Billings departing on 12/15. 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 St. Louis to Billings

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
2:47 pm - 11:38 pm
STL
-
BIL
9h 51m1 stop
Alaska Airlines Logo
2:04 pm - 11:59 pm
BIL
-
STL
8h 55m1 stop
$333Alaska Airlines
Fri, Feb 13 - Sun, Feb 15
United Airlines Logo
2:50 pm - 8:54 pm
STL
-
BIL
7h 04m1 stop
United Airlines Logo
2:40 pm - 8:45 pm
BIL
-
STL
5h 05m1 stop
$353United Airlines
Thu, Apr 23 - Tue, Apr 28
United Airlines Logo
2:50 pm - 8:54 pm
STL
-
BIL
7h 04m1 stop
United Airlines Logo
10:45 am - 9:03 pm
BIL
-
STL
9h 18m2 stops
$358United Airlines
Thu, Apr 23 - Tue, Apr 28
Alaska Airlines Logo
2:47 pm - 11:38 pm
STL
-
BIL
9h 51m1 stop
Alaska Airlines Logo
3:32 pm - 11:59 pm
BIL
-
STL
31h 27m2 stops
$373Alaska Airlines
Fri, Feb 13 - Sun, Feb 15
Delta Logo
3:50 pm - 8:07 pm
STL
-
BIL
5h 17m1 stop
Delta Logo
6:25 pm - 12:36 am
BIL
-
STL
5h 11m1 stop
$390Delta
Thu, Apr 23 - Tue, Apr 28
Delta Logo
3:50 pm - 8:07 pm
STL
-
BIL
5h 17m1 stop
Delta Logo
5:45 am - 4:45 pm
BIL
-
STL
10h 00m2 stops
$395Delta
Thu, Apr 23 - Tue, Apr 28
United Airlines Logo
8:45 am - 1:24 pm
STL
-
BIL
5h 39m1 stop
United Airlines Logo
6:30 am - 1:16 pm
BIL
-
STL
5h 46m1 stop
$413United Airlines
Wed, Jan 7 - Sat, Jan 10
United Airlines Logo
8:30 am - 9:23 pm
STL
-
BIL
13h 53m2 stops
United Airlines Logo
2:45 pm - 8:58 pm
BIL
-
STL
5h 13m1 stop
$418United Airlines
Wed, Jan 7 - Sat, Jan 10
Delta Logo
3:50 pm - 8:07 pm
STL
-
BIL
5h 17m1 stop
Delta Logo
6:25 pm - 12:36 am
BIL
-
STL
5h 11m1 stop
$423Delta
Thu, Apr 23 - Mon, Apr 27
Delta Logo
3:38 pm - 7:39 pm
STL
-
BIL
5h 01m1 stop
Delta Logo
6:25 am - 2:38 pm
BIL
-
STL
7h 13m1 stop
$447Delta
Sat, Mar 7 - Thu, Mar 12

Alaska Airlines flights from St. Louis to Billings

Our best Alaska Airlines deals on St. Louis to Billings flight tickets
Alaska Airlines
Feb 13
STL2:47 pmLambert-St Louis
9h 51m
1 stop
BIL11:38 pmBillings Logan Intl
Feb 15
BIL2:04 pmBillings Logan Intl
8h 55m
1 stop
STL11:59 pmLambert-St Louis
$333
Find similar
Alaska Airlines
Feb 13
STL2:47 pmLambert-St Louis
9h 51m
1 stop
BIL11:38 pmBillings Logan Intl
Feb 15
BIL3:32 pmBillings Logan Intl
31h 27m
2 stops
STL11:59 pmLambert-St Louis
$373
Find similar
Alaska Airlines
Feb 13
STL7:00 amLambert-St Louis
31h 24m
2 stops
BIL1:24 pmBillings Logan Intl
Feb 15
BIL3:32 pmBillings Logan Intl
21h 19m
2 stops
STL1:51 pmLambert-St Louis
$486
Find similar

United Airlines flights from St. Louis to Billings

Our best United Airlines deals on St. Louis to Billings flight tickets
United Airlines
Apr 23
STL2:50 pmLambert-St Louis
7h 04m
1 stop
BIL8:54 pmBillings Logan Intl
Apr 28
BIL2:40 pmBillings Logan Intl
5h 05m
1 stop
STL8:45 pmLambert-St Louis
$353
Find similar
United Airlines
Apr 23
STL2:50 pmLambert-St Louis
7h 04m
1 stop
BIL8:54 pmBillings Logan Intl
Apr 28
BIL10:45 amBillings Logan Intl
9h 18m
2 stops
STL9:03 pmLambert-St Louis
$358
Find similar
United Airlines
Jan 7
STL8:45 amLambert-St Louis
5h 39m
1 stop
BIL1:24 pmBillings Logan Intl
Jan 10
BIL6:30 amBillings Logan Intl
5h 46m
1 stop
STL1:16 pmLambert-St Louis
$413
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Billings 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 December 4, 2025.
Use the filters below to find and compare flights from St. Louis to Billings that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 2/13

2:47 pm-11:38 pm

1 stop9h 51m

Billings Logan Intl

Sun 2/15

2:04 pm-11:59 pm

1 stop8h 55m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/23

2:50 pm-8:54 pm

1 stop7h 04m

Billings Logan Intl

Tue 4/28

2:40 pm-8:45 pm

1 stop5h 05m

$353

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/23

2:50 pm-8:54 pm

1 stop7h 04m

Billings Logan Intl

Tue 4/28

10:45 am-9:03 pm

2 stops9h 18m

$358

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 2/13

2:47 pm-11:38 pm

1 stop9h 51m

Billings Logan Intl

Sun 2/15

3:32 pm-11:59 pm

2 stops31h 27m

$373

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/23

3:50 pm-8:07 pm

1 stop5h 17m

Billings Logan Intl

Tue 4/28

6:25 pm-12:36 am

1 stop5h 11m

$390

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/23

3:50 pm-8:07 pm

1 stop5h 17m

Billings Logan Intl

Tue 4/28

5:45 am-4:45 pm

2 stops10h 00m

$395

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 1/7

8:45 am-1:24 pm

1 stop5h 39m

Billings Logan Intl

Sat 1/10

6:30 am-1:16 pm

1 stop5h 46m

$413

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 1/7

8:30 am-9:23 pm

2 stops13h 53m

Billings Logan Intl

Sat 1/10

2:45 pm-8:58 pm

1 stop5h 13m

$418

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/23

3:50 pm-8:07 pm

1 stop5h 17m

Billings Logan Intl

Mon 4/27

6:25 pm-12:36 am

1 stop5h 11m

$423

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sat 3/7

3:38 pm-7:39 pm

1 stop5h 01m

Billings Logan Intl

Thu 3/12

6:25 am-2:38 pm

1 stop7h 13m

$447

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Billings from

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

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 typical price of a round-trip flight between St. Louis and Billings?

What is the cheapest month to fly to Billings?

The month of January is, on average, the cheapest month to fly to Billings from St. Louis, with most prices found around $379. The month of September is another great option to travel to Billings, with average flight prices from St. Louis averaging around $389.

What is the cheapest day to depart on your flight to Billings?

Our data shows that Tuesday is the least expensive day to fly to Billings. Tickets to fly out on this day can be as low as $362. Flights from St. Louis to Billings on a Monday will generally be more expensive and average around $476. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

According to our data, the cheapest time of day to fly to Billings is in the afternoon. momondo users have found flights departing from St. Louis to Billings in the afternoon for as low as $369. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Billings, so prices are often more expensive at around $551 per ticket.

When to book flights from St. Louis to Billings

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

Cheap St. Louis to Billings (STL to BIL) flight deals and tips

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

Fastest flight time

5h 01m

Direct flights

None
The fastest flight from St. Louis to Billings takes 5h 01m
There are no direct flights from St. Louis to Billings. There are no popular flight routes from St. Louis to Billings.
Search flight deals

  • How far is Lambert-St Louis to Billings Logan Intl by plane?

    Billings Logan Intl is 1055.0 mi away from Lambert-St Louis. A reasonable flight in good conditions will take 5h 01m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Billings Logan Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Billings Logan Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Billings Logan Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Billings Logan Intl 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 Billings Logan Intl Airport.

  • What documentation or ID do you need to fly to Billings Logan Intl Airport?

    The travel and health documents required for your trip to Billings Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Billings Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Billings?

Best airlines flying from St. Louis to Billings

Compare and see reviews for airlines that fly from St. Louis to Billings with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $312Free CancellationRating
7.9
8,011 reviews
Search Delta flights
United AirlinesPriceFrom $332Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
American AirlinesPriceFrom $344Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights

Traveling to a place near Billings?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Billings. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Billings from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between St. Louis and Billings 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 St. Louis to Billings right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Billings, momondo offers a useful price alert feature which will track prices for flights to Billings from St. Louis and alert you when they change.

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