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Cheap flights from Billings to St. Louis from $216

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 5/22. 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
5:35 am - 1:32 pm
BIL
-
STL
6h 57m
1 stop
Delta Logo
2:18 pm - 10:37 pm
STL
-
BIL
9h 19m
2 stops
$344Delta
Sat, Jun 6 - Mon, Jun 8
United Airlines Logo
6:00 pm - 11:57 pm
BIL
-
STL
4h 57m
1 stop
United Airlines Logo
5:41 pm - 10:15 pm
STL
-
BIL
5h 34m
1 stop
$365United Airlines
Thu, Jun 18 - Sun, Jun 21
Delta Logo
5:35 am - 1:32 pm
BIL
-
STL
6h 57m
1 stop
Delta Logo
5:30 pm - 10:37 pm
STL
-
BIL
6h 07m
1 stop
$385Delta
Sat, Jun 6 - Mon, Jun 8
United Airlines Logo
6:00 pm - 11:57 pm
BIL
-
STL
4h 57m
1 stop
United Airlines Logo
9:23 am - 9:17 pm
STL
-
BIL
12h 54m
2 stops
$558United Airlines
Thu, Jun 18 - Sun, Jun 21
Delta Logo
5:35 am - 1:32 pm
BIL
-
STL
6h 57m
1 stop
Delta Logo
5:36 pm - 11:06 pm
STL
-
BIL
6h 30m
1 stop
$599Delta
Sun, May 10 - Mon, May 18
Delta Logo
6:18 pm - 12:25 am
BIL
-
STL
5h 07m
1 stop
Delta Logo
1:56 pm - 11:06 pm
STL
-
BIL
10h 10m
2 stops
$604Delta
Sun, May 3 - Mon, May 11
Delta Logo
5:35 am - 1:32 pm
BIL
-
STL
6h 57m
1 stop
Delta Logo
1:56 pm - 11:06 pm
STL
-
BIL
10h 10m
2 stops
$654Delta
Sun, May 10 - Mon, May 18
Alaska Airlines Logo
7:21 pm - 4:37 pm
BIL
-
STL
20h 16m
2 stops
Alaska Airlines Logo
7:41 pm - 2:54 pm
STL
-
BIL
20h 13m
2 stops
$662Alaska Airlines
Sat, Jun 6 - Mon, Jun 8
Alaska Airlines Logo
7:11 pm - 5:13 pm
BIL
-
STL
21h 02m
2 stops
Alaska Airlines Logo
6:20 pm - 12:56 pm
STL
-
BIL
19h 36m
2 stops
$712Alaska Airlines
Thu, Jun 18 - Sun, Jun 21
Alaska Airlines Logo
7:00 am - 10:59 pm
BIL
-
STL
14h 59m
2 stops
Alaska Airlines Logo
6:21 am - 10:59 pm
STL
-
BIL
17h 38m
2 stops
$743Alaska Airlines
Sun, May 3 - Mon, May 11

Delta flights from Billings to St. Louis

Our best Delta deals on Billings to St. Louis flight tickets
Delta
Jun 6
BIL5:35 amBillings Logan Intl
6h 57m
1 stop
STL1:32 pmLambert-St Louis
Jun 8
STL2:18 pmLambert-St Louis
9h 19m
2 stops
BIL10:37 pmBillings Logan Intl
$344
Delta
Jun 6
BIL5:35 amBillings Logan Intl
6h 57m
1 stop
STL1:32 pmLambert-St Louis
Jun 8
STL5:30 pmLambert-St Louis
6h 07m
1 stop
BIL10:37 pmBillings Logan Intl
$385
Delta
May 10
BIL5:35 amBillings Logan Intl
6h 57m
1 stop
STL1:32 pmLambert-St Louis
May 18
STL5:36 pmLambert-St Louis
6h 30m
1 stop
BIL11:06 pmBillings Logan Intl
$599

Alaska Airlines flights from Billings to St. Louis

Our best Alaska Airlines deals on Billings to St. Louis flight tickets
Alaska Airlines
Jun 6
BIL7:21 pmBillings Logan Intl
20h 16m
2 stops
STL4:37 pmLambert-St Louis
Jun 8
STL7:41 pmLambert-St Louis
20h 13m
2 stops
BIL2:54 pmBillings Logan Intl
$662
Alaska Airlines
Jun 18
BIL7:11 pmBillings Logan Intl
21h 02m
2 stops
STL5:13 pmLambert-St Louis
Jun 21
STL6:20 pmLambert-St Louis
19h 36m
2 stops
BIL12:56 pmBillings Logan Intl
$712
Alaska Airlines
May 3
BIL7:00 amBillings Logan Intl
14h 59m
2 stops
STL10:59 pmLambert-St Louis
May 11
STL6:21 amLambert-St Louis
17h 38m
2 stops
BIL10:59 pmBillings Logan Intl
$743

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 February 23, 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

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 6/6

5:35 am-1:32 pm

1 stop6h 57m

Lambert-St Louis

Mon 6/8

2:18 pm-10:37 pm

2 stops9h 19m

$344

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/18

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Sun 6/21

5:41 pm-10:15 pm

1 stop5h 34m

$365

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 6/6

5:35 am-1:32 pm

1 stop6h 57m

Lambert-St Louis

Mon 6/8

5:30 pm-10:37 pm

1 stop6h 07m

$385

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/18

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Sun 6/21

9:23 am-9:17 pm

2 stops12h 54m

$558

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 5/10

5:35 am-1:32 pm

1 stop6h 57m

Lambert-St Louis

Mon 5/18

5:36 pm-11:06 pm

1 stop6h 30m

$599

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 5/3

6:18 pm-12:25 am

1 stop5h 07m

Lambert-St Louis

Mon 5/11

1:56 pm-11:06 pm

2 stops10h 10m

$604

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 5/10

5:35 am-1:32 pm

1 stop6h 57m

Lambert-St Louis

Mon 5/18

1:56 pm-11:06 pm

2 stops10h 10m

$654

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 6/6

7:21 pm-4:37 pm

2 stops20h 16m

Lambert-St Louis

Mon 6/8

7:41 pm-2:54 pm

2 stops20h 13m

$662

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 6/18

7:11 pm-5:13 pm

2 stops21h 02m

Lambert-St Louis

Sun 6/21

6:20 pm-12:56 pm

2 stops19h 36m

$712

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 5/3

7:00 am-10:59 pm

2 stops14h 59m

Lambert-St Louis

Mon 5/11

6:21 am-10:59 pm

2 stops17h 38m

$743

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 airline that flies from Billings Logan Intl to Lambert-St Louis?

United Airlines and Delta are the most popular carriers operating from Billings Logan Intl to Lambert-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

5h 14m

Direct flights

None
The fastest flight from Billings to St. Louis takes 5h 14m
There are no direct flights from Billings to St. Louis. There are no popular flight routes from Billings to St. Louis.
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 5h 14m.

  • 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
9,342 reviews
Search United Airlines flights
DeltaPriceFrom $278Free CancellationRating
7.9
8,236 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
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Fenton
Alton
Farmington
Clayton
Edwardsville
Festus
Eureka
Litchfield
Glencoe
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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