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Cheap flights from Billings to St. Louis from $333

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Billings to St. Louis departing on 3/23. 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
6:25 am - 2:38 pm
BIL
-
STL
7h 13m1 stop
Delta Logo
3:25 pm - 8:20 pm
STL
-
BIL
5h 55m1 stop
$333Delta
lun., mar. 23 - vie., mar. 27
Alaska Airlines Logo
3:35 pm - 1:54 pm
BIL
-
STL
21h 19m1 stop
Alaska Airlines Logo
2:50 pm - 1:22 pm
STL
-
BIL
23h 32m2 stops
$373Alaska Airlines
mié., ene. 28 - mié., feb. 4
United Airlines Logo
2:45 pm - 8:58 pm
BIL
-
STL
5h 13m1 stop
United Airlines Logo
4:15 pm - 9:23 pm
STL
-
BIL
6h 08m1 stop
$413United Airlines
vie., ene. 9 - mar., ene. 13
United Airlines Logo
2:45 pm - 8:58 pm
BIL
-
STL
5h 13m1 stop
United Airlines Logo
9:57 am - 9:23 pm
STL
-
BIL
12h 26m2 stops
$418United Airlines
vie., ene. 9 - mar., ene. 13
Multiple Airlines Logo
3:35 pm - 6:44 pm
BIL
-
STL
50h 09m2 stops
Multiple Airlines Logo
3:46 pm - 4:32 pm
STL
-
BIL
49h 46m2 stops
$444Multiple Airlines
mié., ene. 28 - mié., feb. 4
Alaska Airlines Logo
2:04 pm - 11:59 pm
BIL
-
STL
8h 55m1 stop
Alaska Airlines Logo
2:47 pm - 1:24 pm
STL
-
BIL
23h 37m2 stops
$449Alaska Airlines
lun., mar. 9 - jue., mar. 12
Multiple Airlines Logo
3:35 pm - 6:44 pm
BIL
-
STL
50h 09m3 stops
Multiple Airlines Logo
3:46 pm - 4:32 pm
STL
-
BIL
49h 46m2 stops
$477Multiple Airlines
mié., ene. 28 - mié., feb. 4
Alaska Airlines Logo
7:00 am - 11:59 pm
BIL
-
STL
15h 59m1 stop
Alaska Airlines Logo
7:00 am - 2:52 pm
STL
-
BIL
8h 52m1 stop
$488Alaska Airlines
lun., mar. 9 - vie., mar. 13
Alaska Airlines Logo
2:04 pm - 11:59 pm
BIL
-
STL
8h 55m1 stop
Alaska Airlines Logo
7:00 am - 1:24 pm
STL
-
BIL
31h 24m2 stops
$494Alaska Airlines
lun., mar. 9 - vie., mar. 13
Delta Logo
6:25 am - 2:38 pm
BIL
-
STL
7h 13m1 stop
Delta Logo
6:10 am - 5:39 pm
STL
-
BIL
12h 29m2 stops
$521Delta
lun., mar. 23 - jue., mar. 26

United Airlines flights from Billings to St. Louis

Our best United Airlines deals on Billings to St. Louis flight tickets
United Airlines
Jan 9
BIL2:45 pmBillings Logan Intl
5h 13m
1 stop
STL8:58 pmLambert-St Louis
Jan 13
STL4:15 pmLambert-St Louis
6h 08m
1 stop
BIL9:23 pmBillings Logan Intl
$413
Find similar
United Airlines
Jan 9
BIL2:45 pmBillings Logan Intl
5h 13m
1 stop
STL8:58 pmLambert-St Louis
Jan 13
STL9:57 amLambert-St Louis
12h 26m
2 stops
BIL9:23 pmBillings Logan Intl
$418
Find similar
United Airlines
Jan 9
BIL10:52 amBillings Logan Intl
11h 06m
2 stops
STL10:58 pmLambert-St Louis
Jan 13
STL8:05 amLambert-St Louis
8h 15m
2 stops
BIL3:20 pmBillings Logan Intl
$590
Find similar

Alaska Airlines flights from Billings to St. Louis

Our best Alaska Airlines deals on Billings to St. Louis flight tickets
Alaska Airlines
Jan 28
BIL3:35 pmBillings Logan Intl
21h 19m
1 stop
STL1:54 pmLambert-St Louis
Feb 4
STL2:50 pmLambert-St Louis
23h 32m
2 stops
BIL1:22 pmBillings Logan Intl
$373
Find similar
Alaska Airlines
Mar 9
BIL2:04 pmBillings Logan Intl
8h 55m
1 stop
STL11:59 pmLambert-St Louis
Mar 12
STL2:47 pmLambert-St Louis
23h 37m
2 stops
BIL1:24 pmBillings Logan Intl
$449
Find similar
Alaska Airlines
Mar 9
BIL7:00 amBillings Logan Intl
15h 59m
1 stop
STL11:59 pmLambert-St Louis
Mar 13
STL7:00 amLambert-St Louis
8h 52m
1 stop
BIL2:52 pmBillings Logan Intl
$488
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 diciembre 16, 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

lun. 3/23

6:25 am-2:38 pm

1 stop7h 13m

Lambert-St Louis

vie. 3/27

3:25 pm-8:20 pm

1 stop5h 55m

$333

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

mié. 1/28

3:35 pm-1:54 pm

1 stop21h 19m

Lambert-St Louis

mié. 2/4

2:50 pm-1:22 pm

2 stops23h 32m

$373

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

vie. 1/9

2:45 pm-8:58 pm

1 stop5h 13m

Lambert-St Louis

mar. 1/13

4:15 pm-9:23 pm

1 stop6h 08m

$413

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

vie. 1/9

2:45 pm-8:58 pm

1 stop5h 13m

Lambert-St Louis

mar. 1/13

9:57 am-9:23 pm

2 stops12h 26m

$418

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

mié. 1/28

3:35 pm-6:44 pm

2 stops50h 09m

Lambert-St Louis

mié. 2/4

3:46 pm-4:32 pm

2 stops49h 46m

$444

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 3/9

2:04 pm-11:59 pm

1 stop8h 55m

Lambert-St Louis

jue. 3/12

2:47 pm-1:24 pm

2 stops23h 37m

$449

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

mié. 1/28

3:35 pm-6:44 pm

3 stops50h 09m

Lambert-St Louis

mié. 2/4

3:46 pm-4:32 pm

2 stops49h 46m

$477

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 3/9

7:00 am-11:59 pm

1 stop15h 59m

Lambert-St Louis

vie. 3/13

7:00 am-2:52 pm

1 stop8h 52m

$488

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 3/9

2:04 pm-11:59 pm

1 stop8h 55m

Lambert-St Louis

vie. 3/13

7:00 am-1:24 pm

2 stops31h 24m

$494

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 3/23

6:25 am-2:38 pm

1 stop7h 13m

Lambert-St Louis

jue. 3/26

6:10 am-5:39 pm

2 stops12h 29m

$521

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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?

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

Fastest flight time

5h 13m

Direct flights

None
The fastest flight from Billings to St. Louis takes 5h 13m
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 13m.

  • 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
7.9
8,010 reviews
Search Delta flights
United AirlinesPriceFrom $249Free CancellationRating
7.4
9,094 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
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Clayton
Festus
Glencoe
Farmington
Eureka
Edwardsville
Litchfield
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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