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

Delta, at $313, was found to be the cheapest airline from St. Louis to Billings.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is currently priced 30% below the average price you’ll pay for this route.

What is the cheapest day to fly from St. Louis to Billings?

Travelers seeking maximum savings on their St. Louis to Billings flight should consider departing on Saturday mornings when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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: American Airlines, Delta or United Airlines.

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

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 31% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from St. Louis to Billings?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Billings. Flights to Billings from St. Louis in January are about $450 on average during January, but can be found for as low as $258.

Most accurate provider : When it comes to deals on St. Louis-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Billings flight deals on Cheapflights vs. FlightHub >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 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 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.

$313+ Save on Flights from St. Louis to Billings

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1. Tell us where you want to go

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2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

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Cheap flight deals from St. Louis to Billings

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$313 (Delta)
Popular in	December
Cheapest in	January
Average price	$579

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. 0% potential increase in price ($0 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($22 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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Find 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 March 3, 2025.

Wed 8/206:59 pmSTL - BIL

1 stop6h 17mDelta

Wed 8/2711:38 amBIL - STL

1 stop5h 25mDelta

Deal found 3/3

$313

Thu 4/34:45 pmSTL - BIL

1 stop6h 59mUnited Airlines

Wed 4/95:00 amBIL - STL

2 stops8h 42mUnited Airlines

Deal found 3/3

$318

Sat 6/147:23 amSTL - BIL

1 stop5h 38mAmerican Airlines

Thu 6/1912:35 pmBIL - STL

1 stop6h 55mAmerican Airlines

Deal found 3/3

$417

Wed 8/207:30 pmSTL - BIL

2 stops18h 45mAlaska Airlines

Wed 8/273:35 pmBIL - STL

2 stops31h 21mAlaska Airlines

Deal found 3/3

$530

Mon 3/106:30 amSTL - BIL

2 stops34h 25mMultiple Airlines

Mon 3/1710:10 amBIL - STL

2 stops29h 32mMultiple Airlines

Deal found 3/3

$642

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 March 3, 2025.

Wed 8/206:59 pmSTL - BIL

1 stop6h 17mDelta

Wed 8/2711:38 amBIL - STL

1 stop5h 25mDelta

Deal found 3/3

$313

Thu 4/34:45 pmSTL - BIL

1 stop6h 59mUnited Airlines

Wed 4/95:00 amBIL - STL

2 stops8h 42mUnited Airlines

Deal found 3/3

$318

Sat 6/147:23 amSTL - BIL

1 stop5h 38mAmerican Airlines

Thu 6/1912:35 pmBIL - STL

1 stop6h 55mAmerican Airlines

Deal found 3/3

$417

Wed 8/207:30 pmSTL - BIL

2 stops18h 45mAlaska Airlines

Wed 8/273:35 pmBIL - STL

2 stops31h 21mAlaska Airlines

Deal found 3/3

$530

Last-minute flights from St. Louis to Billings
Discover last-minute flight deals from St. Louis to Billings. Data last updated March 3, 2025 and is based on user searches.

Sat 3/83:21 pmSTL - BIL

2 stops22h 53mAlaska Airlines

Thu 3/132:55 pmBIL - STL

2 stops22h 30mAlaska Airlines

Deal found 3/3

$1,100

Mon 3/107:30 pmSTL - BIL

1 stop5h 46mDelta

Mon 3/175:20 amBIL - STL

1 stop7h 03mDelta

Deal found 3/3

$511

Mon 3/106:30 amSTL - BIL

2 stops34h 25mMultiple Airlines

Mon 3/1710:10 amBIL - STL

2 stops29h 32mMultiple Airlines

Deal found 3/3

$642

Thu 3/132:22 pmSTL - BIL

1 stop9h 09mAmerican Airlines

Wed 3/195:00 amBIL - STL

1 stop7h 50mAmerican Airlines

Deal found 3/3

$601

Thu 3/136:30 amSTL - BIL

2 stops7h 53mUnited Airlines

Wed 3/192:45 pmBIL - STL

1 stop5h 49mUnited Airlines

Deal found 3/3

$606

Thu 4/34:45 pmSTL - BIL

1 stop6h 59mUnited Airlines

Wed 4/95:00 amBIL - STL

1 stop6h 47mUnited Airlines

Deal found 3/3

$313

Thu 4/171:46 pmSTL - BIL

2 stops10h 26mDelta

Sun 4/205:20 amBIL - STL

1 stop7h 08mDelta

Deal found 3/3

$351

Find flights from St. Louis to Billings within your budget

Fly from

Fly to

Route

Depart

Return

Price

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 8/20

6:59 pm-12:16 am

1 stop6h 17m

Billings Logan Intl

Wed 8/27

11:38 am-6:03 pm

1 stop5h 25m

$313

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 4/3

4:45 pm-10:44 pm

1 stop6h 59m

Billings Logan Intl

Wed 4/9

5:00 am-2:42 pm

2 stops8h 42m

$318

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sat 6/14

7:23 am-12:01 pm

1 stop5h 38m

Billings Logan Intl

Thu 6/19

12:35 pm-8:30 pm

1 stop6h 55m

$417

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 8/20

7:30 pm-1:15 pm

2 stops18h 45m

Billings Logan Intl

Wed 8/27

3:35 pm-11:56 pm

2 stops31h 21m

$530

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

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 March.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Billings flight deals on Cheapflights vs. FlightHub >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 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 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.

Travel insights for flights from St. Louis to Billings

Get recent, data-driven insights about flights from St. Louis to Billings including ideal travel times, pricing trends, and more.

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 $396). Flying from St. Louis to Billings in June is currently the most expensive (average of $617). 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.

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

One of the essential ways to save on airfare from St. Louis to Billings is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 34% on airfare.

Rainfall in Billings by month

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.

Temperature in Billings by month

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).

Reviews of airlines servicing Billings

Peruse reviews from past customers who have flown with Alaska Airlines, Delta and United Airlines from St. Louis to Billings to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,710 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,710 reviews

Alaska Airlines

8.0

Very good

9,710 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

8,068 reviews

Alaska Airlines

8.0

Very good

9,710 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,679 reviews

Alaska Airlines

8.0

Very good

9,710 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,710 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

What are the cheapest airlines flying from St. Louis to Billings round-trip?
Delta, at $313, was found to be the cheapest airline from St. Louis to Billings.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is currently priced 30% 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 $396). Flying from St. Louis to Billings in June is currently the most expensive (average of $617). 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$236	Average$356	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$268	Average$433	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$278	Average$511	FlexibilityNo cancel fee	On-time69%

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$313+ 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 8/20. 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

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find 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 March 3, 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 March 3, 2025.

Find flights from St. Louis to Billings within your budget

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 March.

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.

Travel insights for flights from St. Louis to Billings

Get recent, data-driven insights about flights from St. Louis to Billings including ideal travel times, pricing trends, and more.

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

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

Find hourly flight availability from St. Louis to Billings. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

Rainfall in Billings by month

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

Temperature in Billings by month

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

Reviews of airlines servicing Billings

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.

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 March 3, 2025.