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Cheap flights from Billings to St. Louis from $292

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 8/21. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Billings to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:29 pm - 12:44 am
BIL
-
STL
5h 15m
1 stop
Delta Logo
7:45 am - 12:18 pm
STL
-
BIL
5h 33m
1 stop
$349Delta
Fri, Oct 23 - Sun, Oct 25
United Airlines Logo
7:00 am - 12:40 pm
BIL
-
STL
4h 40m
1 stop
United Airlines Logo
1:05 pm - 9:00 pm
STL
-
BIL
8h 55m
2 stops
$415United Airlines
Wed, Aug 19 - Sat, Aug 22
United Airlines Logo
10:30 am - 4:57 pm
BIL
-
STL
5h 27m
1 stop
United Airlines Logo
4:39 pm - 10:30 pm
STL
-
BIL
6h 51m
1 stop
$419United Airlines
Sat, Oct 31 - Wed, Nov 4
United Airlines Logo
7:00 am - 12:38 pm
BIL
-
STL
4h 38m
1 stop
United Airlines Logo
9:40 am - 9:14 pm
STL
-
BIL
12h 34m
2 stops
$424United Airlines
Sat, Oct 31 - Wed, Nov 4
Delta Logo
6:01 am - 5:19 pm
BIL
-
STL
10h 18m
2 stops
Delta Logo
7:45 am - 12:18 pm
STL
-
BIL
5h 33m
1 stop
$424Delta
Fri, Oct 23 - Sun, Oct 25
United Airlines Logo
10:30 am - 9:40 pm
BIL
-
STL
10h 10m
2 stops
United Airlines Logo
1:00 pm - 10:30 pm
STL
-
BIL
10h 30m
2 stops
$429United Airlines
Sat, Oct 31 - Wed, Nov 4
American Airlines Logo
7:00 am - 6:05 pm
BIL
-
STL
10h 05m
1 stop
American Airlines Logo
5:00 am - 10:07 am
STL
-
BIL
6h 07m
1 stop
$446American Airlines
Wed, Aug 19 - Sat, Aug 22
Delta Logo
5:20 am - 4:44 pm
BIL
-
STL
10h 24m
2 stops
Delta Logo
5:34 pm - 11:30 pm
STL
-
BIL
6h 56m
1 stop
$469Delta
Thu, Aug 20 - Mon, Aug 24
Delta Logo
5:20 am - 4:44 pm
BIL
-
STL
10h 24m
2 stops
Delta Logo
3:39 pm - 11:30 pm
STL
-
BIL
8h 51m
2 stops
$474Delta
Thu, Aug 20 - Mon, Aug 24
American Airlines Logo
12:28 pm - 10:20 am
BIL
-
STL
20h 52m
1 stop
American Airlines Logo
5:18 pm - 11:57 am
STL
-
BIL
19h 39m
1 stop
$486American Airlines
Fri, Sep 25 - Mon, Sep 28

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United Airlines flights from Billings to St. Louis

Our best United Airlines deals on Billings to St. Louis flight tickets
United Airlines
Aug 13
BIL2:29 pmBillings Logan Intl
5h 17m
1 stop
STL8:46 pmLambert-St Louis
Aug 16
STL5:10 amLambert-St Louis
5h 31m
1 stop
BIL9:41 amBillings Logan Intl
$399
United Airlines
Aug 19
BIL7:00 amBillings Logan Intl
4h 40m
1 stop
STL12:40 pmLambert-St Louis
Aug 22
STL1:05 pmLambert-St Louis
8h 55m
2 stops
BIL9:00 pmBillings Logan Intl
$415
United Airlines
Oct 31
BIL10:30 amBillings Logan Intl
5h 27m
1 stop
STL4:57 pmLambert-St Louis
Nov 4
STL4:39 pmLambert-St Louis
6h 51m
1 stop
BIL10:30 pmBillings Logan Intl
$419

Delta flights from Billings to St. Louis

Our best Delta deals on Billings to St. Louis flight tickets
Delta
Oct 23
BIL6:29 pmBillings Logan Intl
5h 15m
1 stop
STL12:44 amLambert-St Louis
Oct 25
STL7:45 amLambert-St Louis
5h 33m
1 stop
BIL12:18 pmBillings Logan Intl
$349
Delta
Aug 20
BIL5:20 amBillings Logan Intl
10h 24m
2 stops
STL4:44 pmLambert-St Louis
Aug 24
STL5:34 pmLambert-St Louis
6h 56m
1 stop
BIL11:30 pmBillings Logan Intl
$469
Delta
Aug 20
BIL5:20 amBillings Logan Intl
10h 24m
2 stops
STL4:44 pmLambert-St Louis
Aug 24
STL3:39 pmLambert-St Louis
8h 51m
2 stops
BIL11:30 pmBillings Logan Intl
$474

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 July 30, 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
Quickest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 10/23

6:29 pm-12:44 am

1 stop5h 15m

Lambert-St Louis

Sun 10/25

7:45 am-12:18 pm

1 stop5h 33m

$349

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/19

7:00 am-12:40 pm

1 stop4h 40m

Lambert-St Louis

Sat 8/22

1:05 pm-9:00 pm

2 stops8h 55m

$415

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 10/31

10:30 am-4:57 pm

1 stop5h 27m

Lambert-St Louis

Wed 11/4

4:39 pm-10:30 pm

1 stop6h 51m

$419

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 10/31

7:00 am-12:38 pm

1 stop4h 38m

Lambert-St Louis

Wed 11/4

9:40 am-9:14 pm

2 stops12h 34m

$424

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 10/23

6:01 am-5:19 pm

2 stops10h 18m

Lambert-St Louis

Sun 10/25

7:45 am-12:18 pm

1 stop5h 33m

$424

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 10/31

10:30 am-9:40 pm

2 stops10h 10m

Lambert-St Louis

Wed 11/4

1:00 pm-10:30 pm

2 stops10h 30m

$429

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/19

7:00 am-6:05 pm

1 stop10h 05m

Lambert-St Louis

Sat 8/22

5:00 am-10:07 am

1 stop6h 07m

$446

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 8/20

5:20 am-4:44 pm

2 stops10h 24m

Lambert-St Louis

Mon 8/24

5:34 pm-11:30 pm

1 stop6h 56m

$469

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 8/20

5:20 am-4:44 pm

2 stops10h 24m

Lambert-St Louis

Mon 8/24

3:39 pm-11:30 pm

2 stops8h 51m

$474

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 9/25

12:28 pm-10:20 am

1 stop20h 52m

Lambert-St Louis

Mon 9/28

5:18 pm-11:57 am

1 stop19h 39m

$486

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 cheapest month to fly to St. Louis?

In general, August 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 February is another great option to travel to St. Louis, with average flight prices from Billings averaging around $0.

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

5h 08m

Direct flights

None
The fastest flight from Billings to St. Louis takes 5h 08m
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 5h 08m.

  • 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 $279Free CancellationRating
7.4
10,047 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
St. Peters
Maryland Heights
Florissant
Collinsville
O'Fallon
Alton
Fenton
Farmington
Clayton
Wentzville
Festus
Eureka
Litchfield
Edwardsville
Grafton
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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