HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$157+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Billings to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Billings to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Billings (BIL) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$313
(Delta)

One-way from

$157
(American Airlines)

Popular in

November

Cheapest in

December

Average price

$540
From Billings Logan Intl to Lambert-St Louis
Search Deals
One-way flight from Billings Logan Intl to Lambert-St Louis
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:08 pmBIL - STL
1 stop5h 30mDelta
Fri 8/155:30 pmSTL - BIL
1 stop6h 40mDelta
Deal found 6/10$313
This American Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amBIL - STL
1 stop6h 23mAmerican Airlines
Thu 9/119:56 amSTL - BIL
1 stop13h 43mAmerican Airlines
Deal found 6/10$314
This United Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/132:35 pmBIL - STL
1 stop6h 15mUnited Airlines
Fri 8/1510:00 amSTL - BIL
2 stops8h 14mUnited Airlines
Deal found 6/10$472
This Alaska Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/46:00 amBIL - STL
1 stop7h 39mAlaska Airlines
Thu 9/113:35 pmSTL - BIL
2 stops22h 49mAlaska Airlines
Deal found 6/10$505
This Mytrip deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:39 pmBIL - STL
2 stops21h 25mMultiple Airlines
Sun 6/296:12 amSTL - BIL
2 stops40h 22mMultiple Airlines
Deal found 6/10$534

Cheapflights Fare Finder

Customize your flight search to find flights from Billings to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Billings to St. Louis that are best for you.

Fly from

Billings

Fly to

St. Louis

Route

Depart

Return

Price

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/13

6:08 pm-12:38 am

1 stop5h 30m

Lambert-St Louis

Fri 8/15

5:30 pm-11:10 pm

1 stop6h 40m

$313

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

6:00 am-1:23 pm

1 stop6h 23m

Lambert-St Louis

Thu 9/11

9:56 am-10:39 pm

1 stop13h 43m

$314

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/13

2:35 pm-9:50 pm

1 stop6h 15m

Lambert-St Louis

Fri 8/15

10:00 am-5:14 pm

2 stops8h 14m

$472

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 9/4

6:00 am-2:39 pm

1 stop7h 39m

Lambert-St Louis

Thu 9/11

3:35 pm-1:24 pm

2 stops22h 49m

$505

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 6/25

6:39 pm-5:04 pm

2 stops21h 25m

Lambert-St Louis

Sun 6/29

6:12 am-9:34 pm

2 stops40h 22m

$534

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Fri 7/25

6:00 am-12:43 pm

1 stop5h 43m

$157

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Thu 7/24

6:20 am-2:30 pm

1 stop7h 10m

$220

BillingsSt. Louis

BIL - STL

BILSTL

Billings Logan Intl

Wed 8/6

2:35 pm-3:47 pm

2 stops24h 12m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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

Rainfall in St. Louis by month

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

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

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    Flying on Delta is currently your cheapest option to St. Louis, with prices starting at $313. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at $314 and $472, respectively. Delta is currently priced 35% below the average price you’ll pay for this route.

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

    $157 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $220 and $244, respectively.

  • 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

Traveling to a place near Billings?

Book flights to Billings if you plan to visit one of these locations
O'Fallon
Maryland Heights
Fairview Heights
Collinsville
Eureka
St. Peters
Glencoe
Festus
Alton
Farmington

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.

Top 2 airlines flying from Billings to St. Louis

Discover the top 2 airlines that operate flights from Billings to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$212Average$343FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$258Average$448FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.