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Cheap flights from St. Louis to Billings 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 St. Louis to Billings departing on 9/16. 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 St. Louis to Billings

Cheap round-trip flights

Delta Logo
5:32 pm - 11:10 pmSTL-BIL
6h 38m1 stop
Delta Logo
6:19 pm - 12:38 amBIL-STL
5h 19m1 stop
$313Delta
Find Deal
Wed, Oct 1 - Sun, Oct 5
Delta Logo
2:15 pm - 11:18 pmSTL-BIL
10h 03m2 stops
Delta Logo
6:25 am - 2:32 pmBIL-STL
7h 07m1 stop
$318Delta
Find Deal
Fri, Oct 24 - Mon, Oct 27
Delta Logo
5:32 pm - 11:10 pmSTL-BIL
6h 38m1 stop
Delta Logo
6:25 am - 2:44 pmBIL-STL
7h 19m1 stop
$346Delta
Find Deal
Wed, Sep 17 - Mon, Sep 22
Delta Logo
2:15 pm - 11:10 pmSTL-BIL
9h 55m2 stops
Delta Logo
6:19 pm - 12:38 amBIL-STL
5h 19m1 stop
$351Delta
Find Deal
Mon, Sep 22 - Fri, Sep 26
Delta Logo
5:32 pm - 11:10 pmSTL-BIL
6h 38m1 stop
Delta Logo
6:25 am - 11:30 amBIL-STL
4h 05m1 stop
$376Delta
Find Deal
Wed, Sep 17 - Mon, Sep 22
Alaska Airlines Logo
6:30 pm - 1:24 pmSTL-BIL
19h 54m2 stops
Alaska Airlines Logo
3:43 pm - 2:39 pmBIL-STL
21h 56m2 stops
$455Alaska Airlines
Find Deal
Mon, Sep 22 - Fri, Sep 26
United Airlines Logo
12:25 pm - 8:49 pmSTL-BIL
9h 24m2 stops
United Airlines Logo
2:31 pm - 3:47 pmBIL-STL
24h 16m2 stops
$469United Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
United Airlines Logo
8:10 am - 5:16 pmSTL-BIL
10h 06m2 stops
United Airlines Logo
10:54 am - 4:33 pmBIL-STL
4h 39m1 stop
$519United Airlines
Find Deal
Fri, Sep 5 - Sat, Sep 13
United Airlines Logo
4:43 pm - 9:46 amSTL-BIL
18h 03m1 stop
United Airlines Logo
5:00 am - 3:46 pmBIL-STL
9h 46m2 stops
$556United Airlines
Find Deal
Fri, Nov 21 - Sun, Nov 23
United Airlines Logo
6:35 am - 1:17 pmSTL-BIL
7h 42m2 stops
United Airlines Logo
2:35 pm - 8:46 pmBIL-STL
5h 11m1 stop
$568United Airlines
Find Deal
Sun, Sep 7 - Sun, Sep 7

United Airlines flights from St. Louis to Billings

Our best United Airlines deals on St. Louis to Billings flight tickets
United Airlines
Oct 24
STL12:25 pmLambert-St Louis
9h 24m
2 stops
BIL8:49 pmBillings Logan Intl
Oct 27
BIL2:31 pmBillings Logan Intl
24h 16m
2 stops
STL3:47 pmLambert-St Louis
$469
Find similar
United Airlines
Aug 31
STL9:17 amLambert-St Louis
9h 01m
2 stops
BIL5:18 pmBillings Logan Intl
Sep 7
BIL5:00 amBillings Logan Intl
6h 43m
1 stop
STL12:43 pmLambert-St Louis
$491
Find similar
United Airlines
Sep 5
STL1:39 pmLambert-St Louis
4h 37m
1 stop
BIL5:16 pmBillings Logan Intl
Sep 13
BIL10:54 amBillings Logan Intl
4h 39m
1 stop
STL4:33 pmLambert-St Louis
$514
Find similar

Delta flights from St. Louis to Billings

Our best Delta deals on St. Louis to Billings flight tickets
Delta
Oct 1
STL5:32 pmLambert-St Louis
6h 38m
1 stop
BIL11:10 pmBillings Logan Intl
Oct 5
BIL6:19 pmBillings Logan Intl
5h 19m
1 stop
STL12:38 amLambert-St Louis
$313
Find similar
Delta
Oct 24
STL2:15 pmLambert-St Louis
10h 03m
2 stops
BIL11:18 pmBillings Logan Intl
Oct 27
BIL6:25 amBillings Logan Intl
7h 07m
1 stop
STL2:32 pmLambert-St Louis
$318
Find similar
Delta
Sep 17
STL5:32 pmLambert-St Louis
6h 38m
1 stop
BIL11:10 pmBillings Logan Intl
Sep 22
BIL6:25 amBillings Logan Intl
7h 19m
1 stop
STL2:44 pmLambert-St Louis
$346
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Billings 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 August 26, 2025.
Use the filters below to find and compare flights from St. Louis to Billings that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 10/1

5:32 pm-11:10 pm

1 stop6h 38m

Billings Logan Intl

Sun 10/5

6:19 pm-12:38 am

1 stop5h 19m

$313

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 10/24

2:15 pm-11:18 pm

2 stops10h 03m

Billings Logan Intl

Mon 10/27

6:25 am-2:32 pm

1 stop7h 07m

$318

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 9/17

5:32 pm-11:10 pm

1 stop6h 38m

Billings Logan Intl

Mon 9/22

6:25 am-2:44 pm

1 stop7h 19m

$346

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Mon 9/22

2:15 pm-11:10 pm

2 stops9h 55m

Billings Logan Intl

Fri 9/26

6:19 pm-12:38 am

1 stop5h 19m

$351

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 9/17

5:32 pm-11:10 pm

1 stop6h 38m

Billings Logan Intl

Mon 9/22

6:25 am-11:30 am

1 stop4h 05m

$376

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Mon 9/22

6:30 pm-1:24 pm

2 stops19h 54m

Billings Logan Intl

Fri 9/26

3:43 pm-2:39 pm

2 stops21h 56m

$455

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 10/24

12:25 pm-8:49 pm

2 stops9h 24m

Billings Logan Intl

Mon 10/27

2:31 pm-3:47 pm

2 stops24h 16m

$469

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 9/5

8:10 am-5:16 pm

2 stops10h 06m

Billings Logan Intl

Sat 9/13

10:54 am-4:33 pm

1 stop4h 39m

$519

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 11/21

4:43 pm-9:46 am

1 stop18h 03m

Billings Logan Intl

Sun 11/23

5:00 am-3:46 pm

2 stops9h 46m

$556

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sun 9/7

6:35 am-1:17 pm

2 stops7h 42m

Billings Logan Intl

Sun 9/7

2:35 pm-8:46 pm

1 stop5h 11m

$568

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 Billings from

How to get the cheapest flight ticket from St. Louis to Billings

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 Billings?

The month of January is, on average, the cheapest month to fly to Billings from St. Louis, with most prices found around $278. The month of September is another great option to travel to Billings, with average flight prices from St. Louis averaging around $378.

What is the cheapest day to depart on your flight to Billings?

Our data shows that Tuesday is the least expensive day to fly to Billings. Tickets to fly out on this day can be as low as $362. Flights from St. Louis to Billings on a Monday will generally be more expensive and average around $476. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Billings?

According to our data, the cheapest time of day to fly to Billings is in the afternoon. momondo users have found flights departing from St. Louis to Billings in the afternoon for as low as $369. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Billings, so prices are often more expensive at around $551 per ticket.

When to book flights from St. Louis to Billings

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

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

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

Direct flights

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

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

    Billings Logan Intl is 1055.0 mi away from Lambert-St Louis. A reasonable flight in good conditions will take 6h 38m.

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

    Prices for flights from Lambert-St Louis Airport to Billings Logan Intl Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Billings Logan Intl Airport.

  • What documentation or ID do you need to fly to Billings Logan Intl Airport?

    The travel and health documents required for your trip to Billings Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Billings Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from St. Louis to Billings

Compare and see reviews for airlines that fly from St. Louis to Billings with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $278Free CancellationRating
7.9
7,979 reviews
Search Delta flights
United AirlinesPriceFrom $278Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
American AirlinesPriceFrom $371Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Billings. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Billings from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between St. Louis and Billings by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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

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