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Cheap flights from Billings to St. Louis from $142

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Billings to St. Louis departing on 10/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Billings to St. Louis

Cheap round-trip flights

United Airlines Logo
2:40 pm - 8:57 pmBIL-STL
5h 17m1 stop
United Airlines Logo
4:37 pm - 9:21 pmSTL-BIL
5h 44m1 stop
$333United Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
Delta Logo
11:47 am - 11:28 pmBIL-STL
10h 41m2 stops
Delta Logo
7:56 pm - 12:22 amSTL-BIL
5h 26m1 stop
$387Delta
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
2:30 pm - 8:46 pmBIL-STL
5h 16m1 stop
United Airlines Logo
5:00 am - 11:16 amSTL-BIL
7h 16m1 stop
$431United Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
United Airlines Logo
5:00 am - 2:27 pmBIL-STL
8h 27m2 stops
United Airlines Logo
6:30 am - 11:16 amSTL-BIL
5h 46m1 stop
$436United Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
American Airlines Logo
12:20 pm - 8:26 pmBIL-STL
7h 06m1 stop
American Airlines Logo
5:09 pm - 9:53 pmSTL-BIL
5h 44m1 stop
$456American Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 11
Delta Logo
11:45 am - 6:40 pmBIL-STL
5h 55m1 stop
Delta Logo
10:30 am - 7:42 pmSTL-BIL
10h 12m2 stops
$461Delta
Find Deal
Tue, Oct 7 - Sat, Oct 11
Alaska Airlines Logo
3:36 pm - 2:27 pmBIL-STL
21h 51m2 stops
Alaska Airlines Logo
7:00 am - 1:22 pmSTL-BIL
31h 22m2 stops
$465Alaska Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
5:00 am - 2:27 pmBIL-STL
8h 27m2 stops
United Airlines Logo
5:00 am - 1:18 pmSTL-BIL
9h 18m2 stops
$507United Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
American Airlines Logo
6:50 am - 10:56 pmBIL-STL
15h 06m2 stops
American Airlines Logo
9:36 am - 10:54 pmSTL-BIL
14h 18m2 stops
$1,121American Airlines
Find Deal
Sat, Dec 20 - Fri, Dec 26
Alaska Airlines Logo
3:24 pm - 3:19 pmBIL-STL
22h 55m2 stops
Alaska Airlines Logo
4:15 pm - 1:22 pmSTL-BIL
22h 07m2 stops
$2,038Alaska Airlines
Find Deal
Wed, Nov 26 - Mon, Dec 1

American Airlines flights from Billings to St. Louis

Our best American Airlines deals on Billings to St. Louis flight tickets
American Airlines
Oct 7
BIL12:20 pmBillings Logan Intl
7h 06m
1 stop
STL8:26 pmLambert-St Louis
Oct 11
STL5:09 pmLambert-St Louis
5h 44m
1 stop
BIL9:53 pmBillings Logan Intl
$456
Find similar
American Airlines
Dec 20
BIL6:50 amBillings Logan Intl
15h 06m
2 stops
STL10:56 pmLambert-St Louis
Dec 26
STL9:36 amLambert-St Louis
14h 18m
2 stops
BIL10:54 pmBillings Logan Intl
$1,121
Find similar

Delta flights from Billings to St. Louis

Our best Delta deals on Billings to St. Louis flight tickets
Delta
Dec 5
BIL11:47 amBillings Logan Intl
10h 41m
2 stops
STL11:28 pmLambert-St Louis
Dec 8
STL7:56 pmLambert-St Louis
5h 26m
1 stop
BIL12:22 amBillings Logan Intl
$387
Find similar
Delta
Oct 7
BIL11:45 amBillings Logan Intl
5h 55m
1 stop
STL6:40 pmLambert-St Louis
Oct 11
STL10:30 amLambert-St Louis
10h 12m
2 stops
BIL7:42 pmBillings Logan Intl
$461
Find similar
Delta
Oct 7
BIL6:25 amBillings Logan Intl
10h 04m
2 stops
STL5:29 pmLambert-St Louis
Oct 11
STL10:45 amLambert-St Louis
9h 57m
2 stops
BIL7:42 pmBillings Logan Intl
$546
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Billings 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 September 24, 2025.
Use the filters below to find and compare flights from Billings to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 12/5

2:40 pm-8:57 pm

1 stop5h 17m

Lambert-St Louis

Mon 12/8

4:37 pm-9:21 pm

1 stop5h 44m

$333

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 12/5

11:47 am-11:28 pm

2 stops10h 41m

Lambert-St Louis

Mon 12/8

7:56 pm-12:22 am

1 stop5h 26m

$387

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 10/8

2:30 pm-8:46 pm

1 stop5h 16m

Lambert-St Louis

Sun 10/12

5:00 am-11:16 am

1 stop7h 16m

$431

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 10/8

5:00 am-2:27 pm

2 stops8h 27m

Lambert-St Louis

Sun 10/12

6:30 am-11:16 am

1 stop5h 46m

$436

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 10/7

12:20 pm-8:26 pm

1 stop7h 06m

Lambert-St Louis

Sat 10/11

5:09 pm-9:53 pm

1 stop5h 44m

$456

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 10/7

11:45 am-6:40 pm

1 stop5h 55m

Lambert-St Louis

Sat 10/11

10:30 am-7:42 pm

2 stops10h 12m

$461

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 12/5

3:36 pm-2:27 pm

2 stops21h 51m

Lambert-St Louis

Mon 12/8

7:00 am-1:22 pm

2 stops31h 22m

$465

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 10/8

5:00 am-2:27 pm

2 stops8h 27m

Lambert-St Louis

Sun 10/12

5:00 am-1:18 pm

2 stops9h 18m

$507

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 12/20

6:50 am-10:56 pm

2 stops15h 06m

Lambert-St Louis

Fri 12/26

9:36 am-10:54 pm

2 stops14h 18m

$1,121

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 11/26

3:24 pm-3:19 pm

2 stops22h 55m

Lambert-St Louis

Mon 12/1

4:15 pm-1:22 pm

2 stops22h 07m

$2,038

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Billings 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 typical price of a round-trip flight between Billings and St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $268. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $530. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Billings in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $264 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $540 per ticket.

When to book flights from Billings to St. Louis

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

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

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

Direct flights

None
There are no direct flights from Billings to St. Louis. There are no popular flight routes from Billings to St. Louis.
Search flight deals

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

    Lambert-St Louis is 1055.0 mi away from Billings Logan Intl. A reasonable flight in good conditions will take 5h 16m.

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

    Prices for flights from Billings Logan Intl Airport to Lambert-St Louis Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Billings Logan Intl 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.

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

Best airlines flying from Billings to St. Louis

Compare and see reviews for airlines that fly from Billings to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $212Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $312Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

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

Why use momondo?

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

It is quick and easy to find Billings to St. Louis 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 St. Louis that suits you.

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

Flights from Billings to St. Louis with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential Billings to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

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

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