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

American Airlines, Delta, and United Airlines can get you from St. Louis to Billings in just under 5h 33m. Your travel time can differ by up to 1h 14m. 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 $278, 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 42% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from St. Louis to Billings one-way?

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $167. Users have also found prices from $167 and $167 on Delta and United Airlines, respectively.

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.

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: 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 May. For low rates, January can be a great choice for travel to Billings. Flights to Billings from St. Louis in January are about $484 on average during January, but can be found for as low as $261.

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.

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.

$148+ Cheap Flights from St. Louis to Billings

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Cheap flight deals from St. Louis to Billings

Round-trip from	$262 (Kiwi.com)
One-way from	$148 (Kiwi.com)
Popular in	May
Cheapest in	January
Average price	$378

From Lambert-St Louis to Billings Logan Intl

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

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Highest demand for flights based on searches. 11% potential increase in price ($65 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($18 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 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 September 11, 2025.

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Mon 10/2710:02 amBIL - STL

2 stops22h 05mMultiple Airlines

Deal found 9/10

$262

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Fri 10/2410:14 amBIL - STL

1 stop28h 42mMultiple Airlines

Deal found 9/10

$277

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Sun 10/269:35 pmBIL - STL

2 stops20h 51mMultiple Airlines

Deal found 9/10

$287

Sun 10/1210:17 amSTL - BIL

2 stops23h 55mMultiple Airlines

Fri 10/2410:14 amBIL - STL

1 stop28h 42mMultiple Airlines

Deal found 9/10

$291

Tue 10/148:04 pmSTL - BIL

1 stop16h 46mAmerican Airlines

Sat 10/2512:20 pmBIL - STL

1 stop8h 46mAmerican Airlines

Deal found 9/10

$319

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Thu 10/239:35 pmBIL - STL

1 stop13h 08mMultiple Airlines

Deal found 9/10

$323

Wed 10/158:49 amSTL - BIL

1 stop5h 33mAmerican Airlines

Sat 10/2512:20 pmBIL - STL

1 stop8h 46mAmerican Airlines

Deal found 9/10

$326

Mon 10/135:31 pmSTL - BIL

1 stop6h 47mDelta

Wed 10/226:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$333

Sun 10/1210:17 amSTL - BIL

2 stops23h 55mMultiple Airlines

Thu 10/239:35 pmBIL - STL

1 stop13h 08mMultiple Airlines

Deal found 9/10

$337

Tue 10/142:15 pmSTL - BIL

2 stops10h 03mDelta

Wed 10/225:25 amBIL - STL

1 stop7h 14mDelta

Deal found 9/10

$338

Sat 10/1110:30 amSTL - BIL

2 stops10h 12mDelta

Sat 10/255:25 amBIL - STL

2 stops9h 06mDelta

Deal found 9/10

$343

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 September 11, 2025.

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Sun 10/269:35 pmBIL - STL

2 stops20h 51mMultiple Airlines

Deal found 9/10

$287

Wed 10/158:49 amSTL - BIL

1 stop5h 33mAmerican Airlines

Sat 10/1812:20 pmBIL - STL

1 stop10h 34mAmerican Airlines

Deal found 9/10

$326

Mon 10/135:31 pmSTL - BIL

1 stop6h 47mDelta

Tue 10/286:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$333

Thu 11/204:43 pmSTL - BIL

1 stop5h 35mUnited Airlines

Mon 11/245:00 amBIL - STL

1 stop6h 39mUnited Airlines

Deal found 9/10

$333

Fri 10/175:31 pmSTL - BIL

1 stop6h 47mDelta

Fri 10/246:25 amBIL - STL

1 stop7h 07mDelta

Deal found 9/10

$333

Wed 10/1512:25 pmSTL - BIL

2 stops9h 24mUnited Airlines

Sat 10/185:00 amBIL - STL

1 stop6h 44mUnited Airlines

Deal found 9/10

$338

Tue 10/145:31 pmSTL - BIL

1 stop6h 47mDelta

Sat 10/256:25 amBIL - STL

1 stop4h 09mDelta

Deal found 9/10

$333

Sat 10/1110:30 amSTL - BIL

2 stops10h 12mDelta

Tue 10/286:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$338

Tue 10/142:15 pmSTL - BIL

2 stops10h 03mDelta

Mon 10/276:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$338

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

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Mon 10/2710:02 amBIL - STL

2 stops22h 05mMultiple Airlines

Deal found 9/10

$262

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Fri 10/2410:14 amBIL - STL

1 stop28h 42mMultiple Airlines

Deal found 9/10

$277

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Sun 10/269:35 pmBIL - STL

2 stops20h 51mMultiple Airlines

Deal found 9/10

$287

Sat 10/114:51 pmSTL - BIL

1 stop28h 54mMultiple Airlines

Thu 10/239:35 pmBIL - STL

1 stop13h 08mMultiple Airlines

Deal found 9/10

$323

Sat 10/1110:30 amSTL - BIL

2 stops10h 12mDelta

Sat 10/255:25 amBIL - STL

2 stops9h 06mDelta

Deal found 9/10

$343

Sun 10/1210:17 amSTL - BIL

2 stops23h 55mMultiple Airlines

Fri 10/2410:14 amBIL - STL

1 stop28h 42mMultiple Airlines

Deal found 9/10

$291

Sun 10/1210:17 amSTL - BIL

2 stops23h 55mMultiple Airlines

Thu 10/239:35 pmBIL - STL

1 stop13h 08mMultiple Airlines

Deal found 9/10

$337

Mon 10/135:31 pmSTL - BIL

1 stop6h 47mDelta

Wed 10/226:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$333

Tue 10/148:04 pmSTL - BIL

1 stop16h 46mAmerican Airlines

Sat 10/2512:20 pmBIL - STL

1 stop8h 46mAmerican Airlines

Deal found 9/10

$319

Tue 10/142:15 pmSTL - BIL

2 stops10h 03mDelta

Tue 10/286:15 pmBIL - STL

1 stop5h 09mDelta

Deal found 9/10

$338

Wed 10/158:49 amSTL - BIL

1 stop5h 33mAmerican Airlines

Sat 10/2512:20 pmBIL - STL

1 stop8h 46mAmerican Airlines

Deal found 9/10

$326

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

Wed 10/157:52 pmSTL - BIL

2 stops25h 53mMultiple Airlines

Deal found 9/10

$148

Fri 10/106:00 amSTL - BIL

1 stop6h 50mAmerican Airlines

Deal found 9/10

$167

Sun 10/1210:17 amSTL - BIL

2 stops23h 55mMultiple Airlines

Deal found 9/10

$171

Wed 10/1511:10 amSTL - BIL

2 stops10h 39mUnited Airlines

Deal found 9/10

$172

Thu 10/163:57 pmSTL - BIL

1 stop9h 11mAlaska Airlines

Deal found 9/10

$204

Sun 10/125:15 amSTL - BIL

1 stop5h 20mUnited Airlines

Deal found 9/10

$207

Sat 10/1812:25 pmSTL - BIL

2 stops9h 24mUnited Airlines

Deal found 9/10

$212

Thu 10/1610:17 amSTL - BIL

3 stops24h 07mMultiple Airlines

Deal found 9/10

$223

Tue 9/307:16 amSTL - BIL

1 stop7h 13mAmerican Airlines

Deal found 9/11

$246

Fri 10/109:20 amSTL - BIL

2 stops12h 29mUnited Airlines

Deal found 9/10

$250

Tue 9/309:19 amSTL - BIL

2 stops14h 16mDelta

Deal found 9/11

$251

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

Sat 10/11

4:51 pm-8:45 pm

1 stop28h 54m

Billings Logan Intl

Sun 10/26

9:35 pm-7:26 pm

2 stops20h 51m

$287

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 10/15

8:49 am-1:22 pm

1 stop5h 33m

Billings Logan Intl

Sat 10/18

12:20 pm-11:54 pm

1 stop10h 34m

$326

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Mon 10/13

5:31 pm-11:18 pm

1 stop6h 47m

Billings Logan Intl

Tue 10/28

6:15 pm-12:24 am

1 stop5h 09m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Thu 11/20

4:43 pm-9:18 pm

1 stop5h 35m

Billings Logan Intl

Mon 11/24

5:00 am-12:39 pm

1 stop6h 39m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 10/17

5:31 pm-11:18 pm

1 stop6h 47m

Billings Logan Intl

Fri 10/24

6:25 am-2:32 pm

1 stop7h 07m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 10/14

5:31 pm-11:18 pm

1 stop6h 47m

Billings Logan Intl

Sat 10/25

6:25 am-11:34 am

1 stop4h 09m

$333

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Wed 10/15

12:25 pm-8:49 pm

2 stops9h 24m

Billings Logan Intl

Sat 10/18

5:00 am-12:44 pm

1 stop6h 44m

$338

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Sat 10/11

10:30 am-7:42 pm

2 stops10h 12m

Billings Logan Intl

Tue 10/28

6:15 pm-12:24 am

1 stop5h 09m

$338

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Tue 10/14

2:15 pm-11:18 pm

2 stops10h 03m

Billings Logan Intl

Mon 10/27

6:15 pm-12:24 am

1 stop5h 09m

$338

St. LouisBillings

STL - BIL

STLBIL

Lambert-St Louis

Fri 10/10

6:00 am-11:50 am

1 stop6h 50m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results

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, January 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 $510). 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

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!

American Airlines

7.2

Good

10,000 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 St. Louis to Billings?
American Airlines, Delta, and United Airlines can get you from St. Louis to Billings in just under 5h 33m. Your travel time can differ by up to 1h 14m. 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 $278, 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 42% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from St. Louis to Billings one-way?
For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $167. Users have also found prices from $167 and $167 on Delta and United Airlines, respectively.
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, January 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 $510). 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
United Airlines	Cheapest$278	Average$507	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$312	Average$398	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$344	Average$516	FlexibilityNo cancel fee	On-time71%

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$148+ Cheap flights from St. Louis to Billings (STL - BIL)

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 10/15. 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

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3. Compare prices and book

Cheap flight deals from St. Louis to Billings

Round-trip from

One-way 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 September 11, 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 September 11, 2025.

Cheapflights Fare Finder

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

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?

What are the cheapest airlines to fly from St. Louis to Billings one-way?

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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Book with Flexibility

Travel Smart

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 September 11, 2025.