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

United Airlines and Delta can get you from Billings to St. Louis in just under 4h 05m. Your travel time can differ by up to 3h 39m. There are 1045 mi between Billings and St. Louis. This flight may include one or multiple stops.

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

Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $212. Another option worth looking into is United Airlines, starting at $312 round trip. Delta is currently priced 56% 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.

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.

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).

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?

August can be a great time to fly to St. Louis from Billings with a flight ticket averaging about $489. Cheapflights users have found deals in the month of August for as cheap as $220. 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.

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.

$143+ Cheap Flights from Billings to St. Louis

Q: 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 $283 and $539 in September. The cheapest round-trip price found within the last 3 days was $521 on Delta (Sep 25-Sep 29).

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Cheap flight deals from Billings to St. Louis

Round-trip from	$521 (Delta)
One-way from	$143 (Kiwi.com)
Popular in	November
Cheapest in	August
Average price	$508

From Billings Logan Intl to Lambert-St Louis

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One-way flight from Billings Logan Intl to Lambert-St Louis

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Highest demand for flights based on searches. 2% potential increase in price ($13 potential increase over avg. RT price).

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Cheapest flight prices on average. 6% potential price decrease ($31 potential savings vs. average RT price).

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Average for round-trip flights in September 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 septiembre 11, 2025.

jue. 9/256:25 amBIL - STL

1 stop4h 05mDelta

lun. 9/295:32 pmSTL - BIL

1 stop6h 38mDelta

Deal found 9/10

$521

mié. 11/265:18 amBIL - STL

2 stops10h 51mDelta

lun. 12/15:34 pmSTL - BIL

1 stop6h 45mDelta

Deal found 9/8

$656

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 septiembre 11, 2025.

jue. 9/257:00 amBIL - STL

2 stops7h 44mUnited Airlines

lun. 9/299:20 amSTL - BIL

2 stops12h 29mUnited Airlines

Deal found 9/10

$521

jue. 9/256:25 amBIL - STL

1 stop4h 05mDelta

lun. 9/295:32 pmSTL - BIL

1 stop6h 38mDelta

Deal found 9/10

$521

mié. 11/265:18 amBIL - STL

2 stops10h 51mDelta

lun. 12/15:34 pmSTL - BIL

1 stop6h 45mDelta

Deal found 9/8

$656

Last-minute flights from Billings to St. Louis
Discover last-minute flight deals from Billings to St. Louis. Data last updated septiembre 11, 2025 and is based on user searches.

jue. 9/256:25 amBIL - STL

1 stop4h 05mDelta

lun. 9/295:32 pmSTL - BIL

1 stop6h 38mDelta

Deal found 9/10

$521

One-way flights from Billings to St. Louis
Search for one-way flight options from Billings to St. Louis. Find affordable one-way fares based on user searches. Data last updated septiembre 11, 2025.

lun. 10/2710:02 amBIL - STL

2 stops22h 05mMultiple Airlines

Deal found 9/11

$143

jue. 10/232:30 pmBIL - STL

1 stop5h 16mUnited Airlines

Deal found 9/11

$167

vie. 10/102:30 pmBIL - STL

1 stop5h 16mUnited Airlines

Deal found 9/10

$207

vie. 10/107:15 pmBIL - STL

1 stop27h 48mAlaska Airlines

Deal found 9/11

$247

jue. 10/239:35 pmBIL - STL

3 stops34h 32mMultiple Airlines

Deal found 9/11

$258

sáb. 9/201:59 pmBIL - STL

1 stop5h 16mAmerican Airlines

Deal found 9/9

$321

sáb. 9/205:25 amBIL - STL

2 stops9h 40mDelta

Deal found 9/9

$326

Cheapflights Fare Finder

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

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

jue. 9/25

7:00 am-3:44 pm

2 stops7h 44m

Lambert-St Louis

lun. 9/29

9:20 am-8:49 pm

2 stops12h 29m

$521

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

jue. 9/25

6:25 am-11:30 am

1 stop4h 05m

Lambert-St Louis

lun. 9/29

5:32 pm-11:10 pm

1 stop6h 38m

$521

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

mié. 11/26

5:18 am-5:09 pm

2 stops10h 51m

Lambert-St Louis

lun. 12/1

5:34 pm-11:19 pm

1 stop6h 45m

$656

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 10/27

10:02 am-9:07 am

2 stops22h 05m

$143

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

lun. 10/27

12:20 pm-8:26 pm

1 stop7h 06m

$167

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

jue. 10/23

2:30 pm-8:46 pm

1 stop5h 16m

$167

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

vie. 10/10

2:30 pm-8:46 pm

1 stop5h 16m

$207

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

vie. 10/10

7:15 pm-12:03 am

1 stop27h 48m

$247

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

jue. 10/23

9:35 pm-9:07 am

3 stops34h 32m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

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?

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Delta and 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.

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,960 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,937 reviews

Delta

8.0

Very good

7,960 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

How long is the flight from Billings to St. Louis?
United Airlines and Delta can get you from Billings to St. Louis in just under 4h 05m. Your travel time can differ by up to 3h 39m. There are 1045 mi between Billings and St. Louis. This flight may include one or multiple stops.
What are the cheapest airlines flying from Billings to St. Louis round-trip?
Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $212. Another option worth looking into is United Airlines, starting at $312 round trip. Delta is currently priced 56% 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

Edwardsville

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Collinsville

Eureka

Glencoe

St. Peters

Chesterfield

Alton

Farmington

Festus

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Top 2 airlines flying from Billings to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$212	Average$460	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$312	Average$539	FlexibilityNo cancel fee	On-time69%

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$143+ 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 10/27. 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

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 septiembre 11, 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 septiembre 11, 2025.

Cheapflights Fare Finder

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

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.

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?

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Delta and 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.

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?

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 St. Louis?

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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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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 septiembre 11, 2025.