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St. Louis

$227+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Aug 23 — Aug 301
Sun 8/23
Sun 8/30
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 July 24, 2026.

This Delta deal was found by Cheapflights users on 7/19. 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.
Sat 10/245:45 am
BIL
-
STL
1 stop6h 47m
Delta
Tue 10/277:55 am
STL
-
BIL
1 stop5h 23m
Delta
Deal found 7/19$319
This United Airlines deal was found by Cheapflights users on 7/20. 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 8/46:00 pm
BIL
-
STL
1 stop4h 57m
United Airlines
Sat 8/85:10 am
STL
-
BIL
1 stop5h 25m
United Airlines
Deal found 7/20$369
This United Airlines deal was found by Cheapflights users on 7/23. 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.
Fri 8/76:00 pm
BIL
-
STL
1 stop4h 57m
United Airlines
Tue 8/114:40 pm
STL
-
BIL
1 stop6h 27m
United Airlines
Deal found 7/23$379
This United Airlines deal was found by Cheapflights users on 7/20. 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 10/315:00 am
BIL
-
STL
1 stop6h 37m
United Airlines
Wed 11/44:40 pm
STL
-
BIL
1 stop5h 24m
United Airlines
Deal found 7/20$409

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 July 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Delta)

One-way from

$227
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$472
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 ($138 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 24, 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

Cheapest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 10/24

5:45 am-1:32 pm

1 stop6h 47m

Lambert-St Louis

Tue 10/27

7:55 am-12:18 pm

1 stop5h 23m

$319
Quickest round-trip

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 8/7

6:00 pm-11:57 pm

1 stop4h 57m

Lambert-St Louis

Tue 8/11

4:40 pm-10:07 pm

1 stop6h 27m

$379

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sat 10/31

5:00 am-12:37 pm

1 stop6h 37m

Lambert-St Louis

Wed 11/4

4:40 pm-9:04 pm

1 stop5h 24m

$409
Cheapest one-way

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Mon 8/17

10:00 am-4:16 pm

2 stops29h 16m

$248

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 8/21

10:10 am-6:55 pm

1 stop7h 45m

$258
Quickest one-way

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 8/9

6:24 pm-12:41 am

1 stop5h 17m

$288

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 8/21

6:21 pm-5:10 pm

1 stop21h 49m

$292

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 8/9

5:53 pm-7:23 pm

2 stops24h 30m

$340

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Sorted by cheapest first

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 July.
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.

Cheapflights Insights

Everything you need to know about your flight from Billings to St. Louis

How much does it cost to fly round-trip from Billings to St. Louis?

Airfare is typical for this route at the moment.

Billings to St. Louis flights typically cost between $304 and $390 in October.
The cheapest round-trip price found within the last 5 days was $319 on Delta (Oct 24-Oct 27).

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 July 24, 2026.
Peruse reviews from past customers who have flown with 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.
United Airlines
7.4
Good
10,024 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this
United Airlines
7.4
Good
10,024 reviews
United Airlines
7.4
Good
10,024 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Boarding

7.7

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
6.0
Good

ROHIT,Jun 2026

IND - EWR

It should not be delayed by 2 hours. I missed the important event due to this

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 can get you from Billings to St. Louis in just under 6h 47m. Your travel time can differ by up to . There are 1045 mi between Billings and St. Louis.

  • What is the cheapest airline to fly from Billings to St. Louis round-trip?

    Flying on United Airlines is currently your cheapest option to St. Louis, with prices starting at $279. United Airlines is currently priced 45% 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
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Billings to St. Louis

Discover the top airline 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 July 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$279Average$520FlexibilityNo cancel feeOn-time69%

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