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Cheap flights from Billings to St. Louis from $284

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 6/7. 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.
American Airlines Logo
12:42 pm - 8:30 pm
BIL
-
STL
6h 48m
1 stop
American Airlines Logo
7:00 am - 12:12 pm
STL
-
BIL
6h 12m
1 stop
$339American Airlines
Fri, May 22 - Mon, May 25
United Airlines Logo
5:51 pm - 11:43 pm
BIL
-
STL
4h 52m
1 stop
United Airlines Logo
4:30 pm - 8:51 pm
STL
-
BIL
5h 21m
1 stop
$429United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
7:00 am - 12:43 pm
BIL
-
STL
4h 43m
1 stop
United Airlines Logo
4:30 pm - 8:51 pm
STL
-
BIL
5h 21m
1 stop
$449United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
5:00 am - 2:18 pm
BIL
-
STL
8h 18m
2 stops
United Airlines Logo
4:30 pm - 8:51 pm
STL
-
BIL
5h 21m
1 stop
$470United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
5:00 am - 3:38 pm
BIL
-
STL
9h 38m
2 stops
United Airlines Logo
4:30 pm - 8:51 pm
STL
-
BIL
5h 21m
1 stop
$480United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
6:00 pm - 11:57 pm
BIL
-
STL
4h 57m
1 stop
United Airlines Logo
5:10 am - 9:34 am
STL
-
BIL
5h 24m
1 stop
$499United Airlines
Tue, Jun 16 - Fri, Jun 26
United Airlines Logo
5:51 pm - 11:43 pm
BIL
-
STL
4h 52m
1 stop
United Airlines Logo
11:45 am - 8:51 pm
STL
-
BIL
10h 06m
2 stops
$504United Airlines
Wed, Sep 30 - Sat, Oct 3
Alaska Airlines Logo
7:21 pm - 11:54 pm
BIL
-
STL
27h 33m
1 stop
Alaska Airlines Logo
5:33 pm - 2:54 pm
STL
-
BIL
22h 21m
1 stop
$537Alaska Airlines
Thu, May 14 - Tue, May 19
United Airlines Logo
5:00 am - 2:18 pm
BIL
-
STL
8h 18m
2 stops
United Airlines Logo
9:23 am - 8:51 pm
STL
-
BIL
12h 28m
2 stops
$545United Airlines
Wed, Sep 30 - Sat, Oct 3
United Airlines Logo
5:00 am - 2:18 pm
BIL
-
STL
8h 18m
2 stops
United Airlines Logo
9:23 am - 8:51 pm
STL
-
BIL
12h 28m
2 stops
$549United Airlines
Wed, Sep 30 - Sat, Oct 3

United Airlines flights from Billings to St. Louis

Our best United Airlines deals on Billings to St. Louis flight tickets
United Airlines
Sep 30
BIL5:51 pmBillings Logan Intl
4h 52m
1 stop
STL11:43 pmLambert-St Louis
Oct 3
STL4:30 pmLambert-St Louis
5h 21m
1 stop
BIL8:51 pmBillings Logan Intl
$429
United Airlines
Sep 30
BIL7:00 amBillings Logan Intl
4h 43m
1 stop
STL12:43 pmLambert-St Louis
Oct 3
STL4:30 pmLambert-St Louis
5h 21m
1 stop
BIL8:51 pmBillings Logan Intl
$449
United Airlines
Sep 30
BIL5:00 amBillings Logan Intl
8h 18m
2 stops
STL2:18 pmLambert-St Louis
Oct 3
STL4:30 pmLambert-St Louis
5h 21m
1 stop
BIL8:51 pmBillings Logan Intl
$470

American Airlines flights from Billings to St. Louis

Our best American Airlines deals on Billings to St. Louis flight tickets
American Airlines
May 22
BIL12:42 pmBillings Logan Intl
6h 48m
1 stop
STL8:30 pmLambert-St Louis
May 25
STL7:00 amLambert-St Louis
6h 12m
1 stop
BIL12:12 pmBillings Logan Intl
$339
American Airlines
Jun 16
BIL12:44 pmBillings Logan Intl
6h 42m
1 stop
STL8:26 pmLambert-St Louis
Jun 25
STL5:25 amLambert-St Louis
8h 27m
1 stop
BIL12:52 pmBillings Logan Intl
$623
American Airlines
May 14
BIL1:51 pmBillings Logan Intl
8h 08m
1 stop
STL10:59 pmLambert-St Louis
May 19
STL9:34 amLambert-St Louis
14h 09m
1 stop
BIL10:43 pmBillings Logan Intl
$688

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 April 13, 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

Fri 5/22

12:42 pm-8:30 pm

1 stop6h 48m

Lambert-St Louis

Mon 5/25

7:00 am-12:12 pm

1 stop6h 12m

$339

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:51 pm-11:43 pm

1 stop4h 52m

Lambert-St Louis

Sat 10/3

4:30 pm-8:51 pm

1 stop5h 21m

$429
Quickest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

7:00 am-12:43 pm

1 stop4h 43m

Lambert-St Louis

Sat 10/3

4:30 pm-8:51 pm

1 stop5h 21m

$449

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:00 am-2:18 pm

2 stops8h 18m

Lambert-St Louis

Sat 10/3

4:30 pm-8:51 pm

1 stop5h 21m

$470

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:00 am-3:38 pm

2 stops9h 38m

Lambert-St Louis

Sat 10/3

4:30 pm-8:51 pm

1 stop5h 21m

$480

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 6/16

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Fri 6/26

5:10 am-9:34 am

1 stop5h 24m

$499

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:51 pm-11:43 pm

1 stop4h 52m

Lambert-St Louis

Sat 10/3

11:45 am-8:51 pm

2 stops10h 06m

$504

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 5/14

7:21 pm-11:54 pm

1 stop27h 33m

Lambert-St Louis

Tue 5/19

5:33 pm-2:54 pm

1 stop22h 21m

$537

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:00 am-2:18 pm

2 stops8h 18m

Lambert-St Louis

Sat 10/3

9:23 am-8:51 pm

2 stops12h 28m

$545

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 9/30

5:00 am-2:18 pm

2 stops8h 18m

Lambert-St Louis

Sat 10/3

9:23 am-8:51 pm

2 stops12h 28m

$549

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?

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 43m

Direct flights

None
The fastest flight from Billings to St. Louis takes 4h 43m
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 43m.

  • 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
9,579 reviews
Search United Airlines flights
DeltaPriceFrom $278Free CancellationRating
7.9
8,406 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
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Clayton
Festus
Eureka
Litchfield
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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