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$313+ Cheap flights from Billings to St. Louis (BIL - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Apr 16 — Apr 231
Wed 4/16
Wed 4/23
1 adult, Economy
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Cheap 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 April 11, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$313
(American Airlines)

Popular in

November

Cheapest in

December

Average price

$392
Provider with most accurate pricing for Billings Logan Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Billings Logan Intl-Lambert-St Louis flights.
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From Billings Logan Intl to Lambert-St Louis
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Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($28 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 11, 2025.

This American Airlines deal was found by Cheapflights users on 4/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/412:35 pmBIL - STL
1 stop5h 33mAmerican Airlines
Thu 9/116:00 amSTL - BIL
1 stop7h 00mAmerican Airlines
Deal found 4/10$313
This Delta deal was found by Cheapflights users on 4/10. 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.
Sun 8/176:25 amBIL - STL
1 stop4h 07mDelta
Thu 8/212:18 pmSTL - BIL
2 stops9h 08mDelta
Deal found 4/10$456
This United deal was found by Cheapflights users on 4/10. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/45:00 amBIL - STL
2 stops8h 33mUnited Airlines
Thu 9/119:13 amSTL - BIL
1 stop5h 00mUnited Airlines
Deal found 4/10$472
This Alaska Airlines deal was found by Cheapflights users on 4/10. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/43:43 pmBIL - STL
2 stops21h 34mAlaska Airlines
Thu 9/117:36 pmSTL - BIL
2 stops18h 48mAlaska Airlines
Deal found 4/10$546

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 April 11, 2025.
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

Thu 9/4

12:35 pm-7:08 pm

1 stop5h 33m

Lambert-St Louis

Thu 9/11

6:00 am-12:00 pm

1 stop7h 00m

$313

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Sun 8/17

6:25 am-11:32 am

1 stop4h 07m

Lambert-St Louis

Thu 8/21

2:18 pm-10:26 pm

2 stops9h 08m

$456

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

5:00 am-2:33 pm

2 stops8h 33m

Lambert-St Louis

Thu 9/11

9:13 am-1:13 pm

1 stop5h 00m

$472

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

3:43 pm-2:17 pm

2 stops21h 34m

Lambert-St Louis

Thu 9/11

7:36 pm-1:24 pm

2 stops18h 48m

$546

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice 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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 April 11, 2025.
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,910 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,636 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,851 reviews

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $313. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $456 and $472, respectively. American Airlines is currently priced 31% 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.

  • What is the cheapest month to book a flight from Billings to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Billings to St. Louis (average of $311). Flying from Billings to St. Louis in March is currently the most expensive (average of $356). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Billings?

Book flights to Billings if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

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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 April 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$236Average$348FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$268Average$468FlexibilityNo cancel feeOn-time69%

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