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

Flying on Alaska Airlines is currently your cheapest option to St. Louis, with prices starting at $304. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $310 and $525, respectively. Alaska Airlines is currently priced 34% below the average price you’ll pay for this route.

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.

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

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

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

Saturday flights are found to be more expensive to fly from Billings to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

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

December can be a great time to fly to St. Louis from Billings with a flight ticket averaging about $466. Cheapflights users have found deals in the month of December for as cheap as $258. The most expensive prices can be found in the month of November.

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

Unlike at noon, when flights are generally more expensive, you can save up to 52% on flights from Billings to St. Louis by exploring options for tickets in the afternoon.

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.

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.

$304+ Save on Flights from Billings to St. Louis

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Cheap flight deals from Billings to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$304 (Alaska Airlines)
Popular in	November
Cheapest in	December

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

Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).

Search Deals

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 February 20, 2025.

Tue 4/87:45 amBIL - STL

1 stop15h 14mAlaska Airlines

Tue 4/156:44 amSTL - BIL

1 stop17h 35mAlaska Airlines

Deal found 2/19

$304

Tue 4/85:20 amBIL - STL

1 stop6h 59mDelta

Tue 4/151:41 pmSTL - BIL

2 stops11h 32mDelta

Deal found 2/19

$310

Tue 4/82:30 pmBIL - STL

3 stops24h 17mUnited Airlines

Tue 4/1510:40 amSTL - BIL

2 stops11h 18mUnited Airlines

Deal found 2/19

$525

Wed 6/412:20 pmBIL - STL

3 stops27h 25mMultiple Airlines

Sun 6/87:37 pmSTL - BIL

2 stops26h 52mMultiple Airlines

Deal found 2/19

$720

Best flights from Billings to St. Louis
Discover carefully curated flight deals from Billings to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 20, 2025.

Tue 4/87:45 amBIL - STL

1 stop15h 14mAlaska Airlines

Tue 4/156:44 amSTL - BIL

1 stop17h 35mAlaska Airlines

Deal found 2/19

$304

Tue 4/85:20 amBIL - STL

1 stop6h 59mDelta

Tue 4/151:41 pmSTL - BIL

2 stops11h 32mDelta

Deal found 2/19

$310

Tue 4/82:30 pmBIL - STL

3 stops24h 17mUnited Airlines

Tue 4/1510:40 amSTL - BIL

2 stops11h 18mUnited Airlines

Deal found 2/19

$525

Wed 6/412:20 pmBIL - STL

3 stops27h 25mMultiple Airlines

Sun 6/87:37 pmSTL - BIL

2 stops26h 52mMultiple Airlines

Deal found 2/19

$720

Last-minute flights from Billings to St. Louis
Discover last-minute flight deals from Billings to St. Louis. Data last updated February 20, 2025 and is based on user searches.

Wed 2/266:25 amBIL - STL

1 stop7h 25mDelta

Mon 3/35:30 pmSTL - BIL

1 stop6h 37mDelta

Deal found 2/19

$745

Thu 3/206:26 pmBIL - STL

1 stop5h 06mDelta

Sun 3/237:30 pmSTL - BIL

1 stop5h 46mDelta

Deal found 2/20

$313

Find flights from Billings to St. Louis within your budget

Fly from

Fly to

Route

Depart

Return

Price

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 4/8

7:45 am-11:59 pm

1 stop15h 14m

Lambert-St Louis

Tue 4/15

6:44 am-11:19 pm

1 stop17h 35m

$304

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 4/8

5:20 am-1:19 pm

1 stop6h 59m

Lambert-St Louis

Tue 4/15

1:41 pm-12:13 am

2 stops11h 32m

$310

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Tue 4/8

2:30 pm-3:47 pm

3 stops24h 17m

Lambert-St Louis

Tue 4/15

10:40 am-8:58 pm

2 stops11h 18m

$525

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 6/4

12:20 pm-4:45 pm

3 stops27h 25m

Lambert-St Louis

Sun 6/8

7:37 pm-9:29 pm

2 stops26h 52m

$720

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Compare providers for flights from Billings to St. Louis

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.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	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 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.

Travel insights for flights from Billings to St. Louis

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

Rainfall in St. Louis 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

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

Alaska Airlines

8.0

Very good

9,691 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

9,691 reviews

Alaska Airlines

8.0

Very good

9,691 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

8,227 reviews

Alaska Airlines

8.0

Very good

9,691 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

8,771 reviews

Alaska Airlines

8.0

Very good

9,691 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 Billings to St. Louis round-trip?
Flying on Alaska Airlines is currently your cheapest option to St. Louis, with prices starting at $304. Additional round-trip tickets that might be worth considering are offered by Delta and United Airlines, with the lowest prices starting at $310 and $525, respectively. Alaska Airlines is currently priced 34% 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

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Collinsville

Wentzville

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Top 2 airlines flying from Billings to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$236	Average$341	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$268	Average$468	FlexibilityNo cancel fee	On-time69%

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$304+ 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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Billings to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Billings to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Find flight deals from Billings to St. Louis

Cheapest flights from Billings to St. LouisExplore 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 20, 2025.

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 20, 2025.

Find flights from Billings to St. Louis within your budget

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.

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.

Travel insights for flights from Billings to St. Louis

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

Rainfall in St. Louis by month

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

Temperature in St. Louis by month

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

Reviews of airlines servicing St. Louis

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?

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

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

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

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

Traveling to a place near 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 Billings to St. Louis

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

Top 2 airlines flying from Billings to St. Louis

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Travel Smart

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 20, 2025.