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Cheap flights from Billings to St. Louis from $157

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 10/26. 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

American Airlines Logo
5:49 am - 8:50 pmBIL-STL
14h 01m1 stop
American Airlines Logo
6:00 am - 11:49 amSTL-BIL
6h 49m1 stop
$311American Airlines
Find Deal
Tue, Aug 26 - Sun, Aug 31
United Airlines Logo
7:00 am - 12:43 pmBIL-STL
4h 43m1 stop
United Airlines Logo
12:35 pm - 9:59 pmSTL-BIL
10h 24m2 stops
$318United Airlines
Find Deal
Tue, Aug 26 - Sun, Aug 31
American Airlines Logo
1:59 pm - 8:15 pmBIL-STL
5h 16m1 stop
American Airlines Logo
7:23 am - 10:39 pmSTL-BIL
16h 16m1 stop
$341American Airlines
Find Deal
Thu, Sep 4 - Thu, Sep 11
Delta Logo
5:25 am - 1:33 pmBIL-STL
7h 08m1 stop
Delta Logo
5:32 pm - 11:10 pmSTL-BIL
6h 38m1 stop
$376Delta
Find Deal
Sun, Sep 14 - Wed, Sep 17
Delta Logo
5:25 am - 1:33 pmBIL-STL
7h 08m1 stop
Delta Logo
2:15 pm - 11:10 pmSTL-BIL
9h 55m2 stops
$381Delta
Find Deal
Sun, Sep 14 - Wed, Sep 17
Alaska Airlines Logo
7:18 pm - 2:39 pmBIL-STL
18h 21m1 stop
Alaska Airlines Logo
3:35 pm - 12:11 amSTL-BIL
9h 36m1 stop
$382Alaska Airlines
Find Deal
Thu, Sep 4 - Thu, Sep 11
United Airlines Logo
5:00 am - 3:44 pmBIL-STL
9h 44m2 stops
United Airlines Logo
8:15 am - 9:59 pmSTL-BIL
14h 44m2 stops
$403United Airlines
Find Deal
Tue, Aug 26 - Sun, Aug 31
United Airlines Logo
2:35 pm - 9:50 pmBIL-STL
6h 15m1 stop
United Airlines Logo
5:15 am - 9:38 amSTL-BIL
5h 23m1 stop
$411United Airlines
Find Deal
Wed, Aug 13 - Sun, Aug 17
Delta Logo
6:25 am - 2:30 pmBIL-STL
7h 05m1 stop
Delta Logo
2:15 pm - 11:10 pmSTL-BIL
9h 55m2 stops
$414Delta
Find Deal
Thu, Sep 4 - Thu, Sep 11
United Airlines Logo
5:55 pm - 11:59 pmBIL-STL
5h 04m1 stop
United Airlines Logo
5:00 am - 1:17 pmSTL-BIL
9h 17m2 stops
$430United Airlines
Find Deal
Wed, Aug 13 - Sun, Aug 17

American Airlines flights from Billings to St. Louis

Our best American Airlines deals on Billings to St. Louis flight tickets
American Airlines
Aug 26
BIL5:49 amBillings Logan Intl
14h 01m
1 stop
STL8:50 pmLambert-St Louis
Aug 31
STL6:00 amLambert-St Louis
6h 49m
1 stop
BIL11:49 amBillings Logan Intl
$311
Find similar
American Airlines
Sep 4
BIL1:59 pmBillings Logan Intl
5h 16m
1 stop
STL8:15 pmLambert-St Louis
Sep 11
STL7:23 amLambert-St Louis
16h 16m
1 stop
BIL10:39 pmBillings Logan Intl
$341
Find similar
American Airlines
Nov 25
BIL6:00 amBillings Logan Intl
5h 37m
1 stop
STL12:37 pmLambert-St Louis
Nov 29
STL1:20 pmLambert-St Louis
8h 55m
1 stop
BIL9:15 pmBillings Logan Intl
$620
Find similar

United Airlines flights from Billings to St. Louis

Our best United Airlines deals on Billings to St. Louis flight tickets
United Airlines
Aug 26
BIL7:00 amBillings Logan Intl
4h 43m
1 stop
STL12:43 pmLambert-St Louis
Aug 31
STL12:35 pmLambert-St Louis
10h 24m
2 stops
BIL9:59 pmBillings Logan Intl
$318
Find similar
United Airlines
Aug 26
BIL5:00 amBillings Logan Intl
9h 44m
2 stops
STL3:44 pmLambert-St Louis
Aug 31
STL8:15 amLambert-St Louis
14h 44m
2 stops
BIL9:59 pmBillings Logan Intl
$403
Find similar
United Airlines
Aug 13
BIL2:35 pmBillings Logan Intl
6h 15m
1 stop
STL9:50 pmLambert-St Louis
Aug 17
STL5:15 amLambert-St Louis
5h 23m
1 stop
BIL9:38 amBillings Logan Intl
$411
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 July 31, 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

Tue 8/26

5:49 am-8:50 pm

1 stop14h 01m

Lambert-St Louis

Sun 8/31

6:00 am-11:49 am

1 stop6h 49m

$311

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 8/26

7:00 am-12:43 pm

1 stop4h 43m

Lambert-St Louis

Sun 8/31

12:35 pm-9:59 pm

2 stops10h 24m

$318

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

1:59 pm-8:15 pm

1 stop5h 16m

Lambert-St Louis

Thu 9/11

7:23 am-10:39 pm

1 stop16h 16m

$341

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 9/14

5:25 am-1:33 pm

1 stop7h 08m

Lambert-St Louis

Wed 9/17

5:32 pm-11:10 pm

1 stop6h 38m

$376

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 9/14

5:25 am-1:33 pm

1 stop7h 08m

Lambert-St Louis

Wed 9/17

2:15 pm-11:10 pm

2 stops9h 55m

$381

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

7:18 pm-2:39 pm

1 stop18h 21m

Lambert-St Louis

Thu 9/11

3:35 pm-12:11 am

1 stop9h 36m

$382

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 8/26

5:00 am-3:44 pm

2 stops9h 44m

Lambert-St Louis

Sun 8/31

8:15 am-9:59 pm

2 stops14h 44m

$403

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/13

2:35 pm-9:50 pm

1 stop6h 15m

Lambert-St Louis

Sun 8/17

5:15 am-9:38 am

1 stop5h 23m

$411

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

6:25 am-2:30 pm

1 stop7h 05m

Lambert-St Louis

Thu 9/11

2:15 pm-11:10 pm

2 stops9h 55m

$414

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/13

5:55 pm-11:59 pm

1 stop5h 04m

Lambert-St Louis

Sun 8/17

5:00 am-1:17 pm

2 stops9h 17m

$430

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 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

Best Price Found

$157

Fastest flight time

4h 43m

Direct flights

None

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Billings in the past 72 hours is $157. The best round-trip flight deal from Billings to St. Louis found on momondo in the last 72 hours is $311.
The fastest flight from Billings to St. Louis takes 4h 43m
There are no direct flights from Billings to St. Louis. Popular non-direct route for this connection is Billings Logan Intl Airport - Lambert-St Louis Airport.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
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 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
DeltaPriceFrom $212Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
8,900 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
Hermann
Fairview Heights
Maryland Heights
Florissant
Fenton
Collinsville
O'Fallon
Alton
St. Peters
Farmington
Wentzville
Festus
Glencoe
Eureka
Edwardsville
Clayton
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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