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$216+ Cheap flights from Billings to St. Louis (BIL - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Mar 15 — Mar 221
Sun 3/15
Sun 3/22
1 adult, Economy
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Cheap flight deals from Billings to St. Louis

Cheapest flights from Billings to St. Louis
Explore the most affordable flight options available from Billings to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 13, 2026.

This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/56:18 pm
BIL
-
STL
1 stop5h 07m
Delta
Sun 5/245:47 pm
STL
-
BIL
1 stop6h 16m
Delta
Deal found 2/11$304
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/165:55 pm
BIL
-
STL
1 stop5h 03m
United Airlines
Wed 6/244:50 pm
STL
-
BIL
1 stop5h 19m
United Airlines
Deal found 2/11$361
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:35 am
BIL
-
STL
1 stop13h 08m
United Airlines
Thu 5/284:50 pm
STL
-
BIL
1 stop5h 19m
United Airlines
Deal found 2/9$431
This Delta deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/186:20 pm
BIL
-
STL
1 stop5h 10m
Delta
Thu 5/281:50 pm
STL
-
BIL
2 stops10h 13m
Delta
Deal found 2/9$434
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/212:35 pm
BIL
-
STL
1 stop4h 51m
United Airlines
Tue 2/244:30 pm
STL
-
BIL
1 stop5h 51m
United Airlines
Deal found 2/11$479
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/102:45 pm
BIL
-
STL
1 stop5h 13m
United Airlines
Sat 2/144:30 pm
STL
-
BIL
1 stop5h 51m
United Airlines
Deal found 2/9$499
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/166:21 pm
BIL
-
STL
1 stop5h 00m
Delta
Fri 3/203:05 pm
STL
-
BIL
1 stop6h 14m
Delta
Deal found 2/11$529

Find flight deals from Billings to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$304
(Delta)

One-way from

$216
(American Airlines)

Popular in

November

Cheapest in

August
Provider with most accurate pricing for Billings Logan Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Billings Logan Intl-Lambert-St Louis flights.
Search Deals
From Billings Logan Intl to Lambert-St Louis
Search Deals
One-way flight from Billings Logan Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($133 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($32 potential savings vs. average RT price).
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
Use the filters below to find and compare flights from Billings to St. Louis that are best for you.

Fly from

Billings

Fly to

St. Louis

Route

Depart

Return

Price

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 5/5

6:18 pm-12:25 am

1 stop5h 07m

Lambert-St Louis

Sun 5/24

5:47 pm-11:03 pm

1 stop6h 16m

$304

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 6/16

5:55 pm-11:58 pm

1 stop5h 03m

Lambert-St Louis

Wed 6/24

4:50 pm-9:09 pm

1 stop5h 19m

$361

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 5/18

6:35 am-8:43 pm

1 stop13h 08m

Lambert-St Louis

Thu 5/28

4:50 pm-9:09 pm

1 stop5h 19m

$431

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 5/18

6:20 pm-12:30 am

1 stop5h 10m

Lambert-St Louis

Thu 5/28

1:50 pm-11:03 pm

2 stops10h 13m

$434

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 3/16

6:21 pm-12:21 am

1 stop5h 00m

Lambert-St Louis

Fri 3/20

3:05 pm-8:19 pm

1 stop6h 14m

$529

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 5/18

7:21 pm-5:06 pm

2 stops20h 45m

Lambert-St Louis

Thu 5/28

7:56 pm-2:54 pm

2 stops19h 58m

$549

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 5/29

12:38 pm-8:30 pm

1 stop6h 52m

$216

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 5/29

7:21 pm-5:06 pm

2 stops20h 45m

$308

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 7/6

6:25 pm-12:36 am

1 stop5h 11m

$310

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 7/5

6:15 am-11:30 am

1 stop4h 15m

$325

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/12

Showing 1-10 of 12 results
1
2

Compare providers for flights from Billings to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Billings to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Billings-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Billings-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Billings-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Billings-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Billings-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Billings to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Billings with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated February 13, 2026.
Peruse reviews from past customers who have flown with Delta and United Airlines from Billings to St. Louis to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,191 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,191 reviews
Delta
7.9
Good
8,191 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,286 reviews
Delta
7.9
Good
8,191 reviews

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Billings to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Billings to St. Louis?

    Delta and United Airlines can get you from Billings to St. Louis in just under 5h 03m. Your travel time can differ by up to 04m. There are 1045 mi between Billings and St. Louis. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Billings to St. Louis round-trip?

    Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $249. Another option worth looking into is Delta, starting at $312 round trip. United Airlines is currently priced 48% below the average price you’ll pay for this route.

  • Can I find deals for flights from Billings to St. Louis that include hotel bookings?

    Yes. In addition to deals on Billings to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Billings to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Billings to St. Louis.

  • Can I find deals for business class flights from Billings to St. Louis?

    Yes. Cheapflights offers flight deals from Billings to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Top 2 airlines flying from Billings to St. Louis

Discover the top 2 airlines that operate flights from Billings to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$249Average$481FlexibilityNo cancel feeOn-time69%
DeltaCheapest$312Average$510FlexibilityNo cancel feeOn-timeN/A

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