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Cheap flights from Billings to St. Louis from $258

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 9/7. 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 Billings to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:40 pm - 12:43 am
BIL
-
STL
5h 03m
1 stop
Delta Logo
5:00 pm - 10:51 pm
STL
-
BIL
6h 51m
1 stop
$319Delta
Thu, Jun 25 - Sat, Jul 4
Delta Logo
6:40 pm - 12:43 am
BIL
-
STL
5h 03m
1 stop
Delta Logo
8:00 am - 8:02 pm
STL
-
BIL
13h 02m
2 stops
$324Delta
Thu, Jun 25 - Sat, Jul 4
Delta Logo
6:25 am - 4:41 pm
BIL
-
STL
9h 16m
2 stops
Delta Logo
6:00 am - 5:53 pm
STL
-
BIL
12h 53m
2 stops
$329Delta
Sat, Sep 19 - Tue, Sep 29
United Airlines Logo
4:10 pm - 11:57 pm
BIL
-
STL
6h 47m
1 stop
United Airlines Logo
4:48 pm - 9:17 pm
STL
-
BIL
5h 29m
1 stop
$359United Airlines
Tue, Jul 14 - Tue, Jul 28
Delta Logo
6:40 pm - 12:43 am
BIL
-
STL
5h 03m
1 stop
Delta Logo
5:36 pm - 11:32 pm
STL
-
BIL
6h 56m
1 stop
$369Delta
Thu, Jun 11 - Mon, Jun 15
Delta Logo
6:33 pm - 12:41 am
BIL
-
STL
5h 08m
1 stop
Delta Logo
2:10 pm - 11:30 pm
STL
-
BIL
10h 20m
2 stops
$374Delta
Mon, Aug 10 - Thu, Aug 27
United Airlines Logo
6:00 pm - 11:57 pm
BIL
-
STL
4h 57m
1 stop
United Airlines Logo
4:40 pm - 9:00 pm
STL
-
BIL
5h 20m
1 stop
$388United Airlines
Mon, Aug 10 - Fri, Aug 21
United Airlines Logo
6:00 pm - 11:57 pm
BIL
-
STL
4h 57m
1 stop
United Airlines Logo
5:10 am - 9:36 am
STL
-
BIL
5h 26m
1 stop
$399United Airlines
Sun, Jun 21 - Sun, Jun 28
United Airlines Logo
5:00 am - 3:38 pm
BIL
-
STL
9h 38m
2 stops
United Airlines Logo
5:10 am - 9:41 am
STL
-
BIL
5h 31m
1 stop
$414United Airlines
Sat, Sep 19 - Tue, Sep 22
United Airlines Logo
5:00 am - 3:38 pm
BIL
-
STL
9h 38m
2 stops
United Airlines Logo
7:00 am - 9:00 pm
STL
-
BIL
15h 00m
2 stops
$419United Airlines
Sat, Sep 19 - Tue, Sep 22

United Airlines flights from Billings to St. Louis

Our best United Airlines deals on Billings to St. Louis flight tickets
United Airlines
Jul 14
BIL4:10 pmBillings Logan Intl
6h 47m
1 stop
STL11:57 pmLambert-St Louis
Jul 28
STL4:48 pmLambert-St Louis
5h 29m
1 stop
BIL9:17 pmBillings Logan Intl
$359
United Airlines
Aug 10
BIL6:00 pmBillings Logan Intl
4h 57m
1 stop
STL11:57 pmLambert-St Louis
Aug 21
STL4:40 pmLambert-St Louis
5h 20m
1 stop
BIL9:00 pmBillings Logan Intl
$388
United Airlines
Jun 21
BIL6:00 pmBillings Logan Intl
4h 57m
1 stop
STL11:57 pmLambert-St Louis
Jun 28
STL5:10 amLambert-St Louis
5h 26m
1 stop
BIL9:36 amBillings Logan Intl
$399

Delta flights from Billings to St. Louis

Our best Delta deals on Billings to St. Louis flight tickets
Delta
Aug 11
BIL5:20 amBillings Logan Intl
7h 14m
1 stop
STL1:34 pmLambert-St Louis
Aug 21
STL5:42 pmLambert-St Louis
6h 48m
1 stop
BIL11:30 pmBillings Logan Intl
$319
Delta
Jun 25
BIL6:40 pmBillings Logan Intl
5h 03m
1 stop
STL12:43 amLambert-St Louis
Jul 4
STL8:00 amLambert-St Louis
13h 02m
2 stops
BIL8:02 pmBillings Logan Intl
$324
Delta
Jun 11
BIL6:40 pmBillings Logan Intl
5h 03m
1 stop
STL12:43 amLambert-St Louis
Jun 15
STL5:36 pmLambert-St Louis
6h 56m
1 stop
BIL11:32 pmBillings Logan Intl
$369

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 May 29, 2026.
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

Cheapest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/25

6:40 pm-12:43 am

1 stop5h 03m

Lambert-St Louis

Sat 7/4

5:00 pm-10:51 pm

1 stop6h 51m

$319

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/25

6:40 pm-12:43 am

1 stop5h 03m

Lambert-St Louis

Sat 7/4

8:00 am-8:02 pm

2 stops13h 02m

$324

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 9/19

6:25 am-4:41 pm

2 stops9h 16m

Lambert-St Louis

Tue 9/29

6:00 am-5:53 pm

2 stops12h 53m

$329

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 7/14

4:10 pm-11:57 pm

1 stop6h 47m

Lambert-St Louis

Tue 7/28

4:48 pm-9:17 pm

1 stop5h 29m

$359

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/11

6:40 pm-12:43 am

1 stop5h 03m

Lambert-St Louis

Mon 6/15

5:36 pm-11:32 pm

1 stop6h 56m

$369

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 8/10

6:33 pm-12:41 am

1 stop5h 08m

Lambert-St Louis

Thu 8/27

2:10 pm-11:30 pm

2 stops10h 20m

$374
Quickest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 8/10

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Fri 8/21

4:40 pm-9:00 pm

1 stop5h 20m

$388

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 6/21

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Sun 6/28

5:10 am-9:36 am

1 stop5h 26m

$399

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 9/19

5:00 am-3:38 pm

2 stops9h 38m

Lambert-St Louis

Tue 9/22

5:10 am-9:41 am

1 stop5h 31m

$414

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 9/19

5:00 am-3:38 pm

2 stops9h 38m

Lambert-St Louis

Tue 9/22

7:00 am-9:00 pm

2 stops15h 00m

$419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 month to fly to St. Louis?

In general, February is the cheapest month to fly from Billings to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. The month of August is another great option to travel to St. Louis, with average flight prices from Billings averaging around $220.

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

Fastest flight time

4h 47m

Direct flights

None
The fastest flight from Billings to St. Louis takes 4h 47m
There are no direct flights from Billings to St. Louis. There are no popular flight routes from Billings to St. Louis.
Search flight deals

Frequently asked questions about flying from Billings to St. Louis

  • 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 4h 47m.

  • 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
United AirlinesPriceFrom $249Free CancellationRating
7.4
9,763 reviews
Search United Airlines flights
DeltaPriceFrom $278Free CancellationRating
7.9
8,419 reviews
Search Delta 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
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Eureka
Litchfield
Clayton
Edwardsville
Shrewsbury
Grafton

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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