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

Alaska Airlines and United Airlines can get you from St. Louis to Billings in just under 5h 39m. Your travel time can differ by up to 17h 53m. The distance from St. Louis to Billings is about 1045 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

United Airlines, at $312, was found to be the cheapest airline from St. Louis to Billings.Alternate airlines to your destination round-trip include Delta and American Airlines. United Airlines is currently priced 32% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Billings ranges from 0.5 - 2.2 inches per month. May is typically the wettest month, when rainfall can reach 2.2 in. January is typically the driest time to visit Billings when rainfall is around 0.5 in.

If weather is an important factor for your trip to Billings, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 26.6 F).

What are the most popular airlines that fly from St. Louis to Billings?

Before booking your flight from St. Louis to Billings check out the most popular airlines for this route: United Airlines, American Airlines or Delta.

What is the cheapest time of day to fly from STL to BIL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to Billings as you normally would.

Most accurate provider : When it comes to deals on St. Louis-Billings flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Billings flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Billings flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Billings flights, Cheapflights users trust eDreams the most. eDreams 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 St. Louis-Billings flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

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

$304+ Flights from St. Louis to Billings

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Cheap flight deals from St. Louis to Billings

Cheapest flights from St. Louis to Billings
Explore the most affordable flight options available from St. Louis to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Thu 12/259:00 amSTL - BIL

1 stop5h 24mUnited Airlines

Mon 12/296:35 amBIL - STL

1 stop5h 45mUnited Airlines

Deal found 12/9

$543

Mon 12/227:06 pmSTL - BIL

1 stop5h 13mDelta

Mon 12/296:25 amBIL - STL

1 stop7h 38mDelta

Deal found 12/10

$576

Wed 12/174:37 pmSTL - BIL

1 stop5h 45mUnited Airlines

Sat 12/202:40 pmBIL - STL

1 stop6h 42mUnited Airlines

Deal found 12/11

$704

Thu 12/2511:51 amSTL - BIL

2 stops22h 33mMultiple Airlines

Mon 12/2910:14 amBIL - STL

2 stops23h 42mMultiple Airlines

Deal found 12/9

$730

Mon 12/226:30 amSTL - BIL

2 stops15h 54mUnited Airlines

Mon 12/296:35 amBIL - STL

1 stop5h 45mUnited Airlines

Deal found 12/11

$812

Best flights from St. Louis to Billings
Discover carefully curated flight deals from St. Louis to Billings that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Thu 1/82:50 pmSTL - BIL

2 stops23h 32mAlaska Airlines

Thu 1/152:02 pmBIL - STL

1 stop22h 52mAlaska Airlines

Deal found 12/10

$393

Wed 1/78:45 amSTL - BIL

1 stop5h 39mUnited Airlines

Sat 1/102:45 pmBIL - STL

1 stop5h 13mUnited Airlines

Deal found 12/9

$413

Sat 3/73:38 pmSTL - BIL

1 stop5h 01mDelta

Fri 3/136:20 pmBIL - STL

1 stop4h 58mDelta

Deal found 12/10

$420

Wed 1/77:00 amSTL - BIL

2 stops31h 22mAlaska Airlines

Sat 1/103:35 pmBIL - STL

2 stops45h 19mAlaska Airlines

Deal found 12/9

$533

Last-minute flights from St. Louis to Billings
Discover last-minute flight deals from St. Louis to Billings. Data last updated December 12, 2025 and is based on user searches.

Mon 12/227:06 pmSTL - BIL

1 stop5h 13mDelta

Mon 12/296:25 amBIL - STL

1 stop7h 38mDelta

Deal found 12/10

$576

Thu 12/259:00 amSTL - BIL

1 stop5h 24mUnited Airlines

Mon 12/296:35 amBIL - STL

1 stop5h 45mUnited Airlines

Deal found 12/9

$543

Wed 1/78:45 amSTL - BIL

1 stop5h 39mUnited Airlines

Sat 1/102:45 pmBIL - STL

1 stop5h 13mUnited Airlines

Deal found 12/9

$413

Wed 1/77:00 amSTL - BIL

2 stops31h 22mAlaska Airlines

Sat 1/103:35 pmBIL - STL

2 stops45h 19mAlaska Airlines

Deal found 12/9

$533

Thu 1/85:00 pmSTL - BIL

1 stop6h 31mDelta

Thu 1/156:22 amBIL - STL

1 stop7h 38mDelta

Deal found 12/10

$304

Thu 1/82:50 pmSTL - BIL

2 stops23h 32mAlaska Airlines

Thu 1/152:02 pmBIL - STL

1 stop22h 52mAlaska Airlines

Deal found 12/10

$393

Wed 1/1411:20 amSTL - BIL

2 stops11h 03mUnited Airlines

Tue 1/202:45 pmBIL - STL

1 stop5h 13mUnited Airlines

Deal found 12/11

$309

Find flight deals from St. Louis to Billings

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$304 (Delta)
Popular in	May
Cheapest in	November
Average price	$425

Provider with most accurate pricing for Lambert-St Louis-Billings Logan Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Billings Logan Intl flights.

Search Deals

From Lambert-St Louis to Billings Logan Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($78 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Billings that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 1/8

2:50 pm-1:22 pm

2 stops23h 32m

Billings Logan Intl

Thu 1/15

2:02 pm-1:54 pm

1 stop22h 52m

$393

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 1/7

8:45 am-1:24 pm

1 stop5h 39m

Billings Logan Intl

Sat 1/10

2:45 pm-8:58 pm

1 stop5h 13m

$413

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sat 3/7

3:38 pm-7:39 pm

1 stop5h 01m

Billings Logan Intl

Fri 3/13

6:20 pm-12:18 am

1 stop4h 58m

$420

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 1/7

7:00 am-1:22 pm

2 stops31h 22m

Billings Logan Intl

Sat 1/10

3:35 pm-1:54 pm

2 stops45h 19m

$533

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from St. Louis to Billings

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Billings in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 St. Louis-Billings flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Billings flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Billings flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Billings flights, Cheapflights users trust eDreams the most. eDreams 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 St. Louis-Billings 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 St. Louis to Billings

Have a flexible travel schedule? Discover the best time to fly to Billings from St. Louis 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 St. Louis to Billings

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

Currently, February is the cheapest month in which you can book a flight from St. Louis to Billings (average of $272). Flying from St. Louis to Billings in August is currently the most expensive (average of $403). 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.

Reviews of airlines servicing Billings

Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from St. Louis to Billings by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.9

Good

8,007 reviews

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

8,007 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,095 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

American Airlines

7.2

Good

11,050 reviews

Delta

7.9

Good

8,007 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

How long is the flight from St. Louis to Billings?
Alaska Airlines and United Airlines can get you from St. Louis to Billings in just under 5h 39m. Your travel time can differ by up to 17h 53m. The distance from St. Louis to Billings is about 1045 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from St. Louis to Billings round-trip?
United Airlines, at $312, was found to be the cheapest airline from St. Louis to Billings.Alternate airlines to your destination round-trip include Delta and American Airlines. United Airlines is currently priced 32% below the average price you’ll pay for this route.
Can I find deals for flights from St. Louis to Billings that include hotel bookings?
Yes. In addition to deals on St. Louis to Billings flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Billings?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Billings.
Can I find deals for business class flights from St. Louis to Billings?
Yes. Cheapflights offers flight deals from St. Louis to Billings 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 St. Louis to Billings?
Currently, February is the cheapest month in which you can book a flight from St. Louis to Billings (average of $272). Flying from St. Louis to Billings in August is currently the most expensive (average of $403). 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

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Billings

Top 3 airlines flying from St. Louis to Billings

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$312	Average$425	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$332	Average$490	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$344	Average$431	FlexibilityNo cancel fee	On-time71%

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$304+ Cheap flights from St. Louis to Billings (STL - BIL)

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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Billings with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to Billings

Cheapest flights from St. Louis to BillingsExplore the most affordable flight options available from St. Louis to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from St. Louis to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from St. Louis to Billings

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Billings that are best for you.

Compare providers for flights from St. Louis to Billings

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 St. Louis to Billings in December.

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

Have a flexible travel schedule? Discover the best time to fly to Billings from St. Louis with our price prediction graph.

Cheapflights Insights

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

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

Reviews of airlines servicing Billings

Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from St. Louis to Billings by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Billings. 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 St. Louis to Billings?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Billings

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from St. Louis to Billings

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Cheapest flights from St. Louis to Billings
Explore the most affordable flight options available from St. Louis to Billings. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.