$253+ 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 7/17. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
May 24 — May 311
Round-trip
1 adult, Economy
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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
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Best
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One-way
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 April 24, 2026.
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 April 24, 2026.
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/2312:42 pm
BIL
- STL
1 stop6h 48m
American Airlines
Sun 5/246:00 am
STL
- BIL
1 stop7h 12m
American Airlines
Deal found 4/22![American Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 4/20. 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.
Tue 5/56:24 am
BIL
- STL
1 stop7h 05m
Delta
Sat 5/95:00 pm
STL
- BIL
1 stop6h 52m
Delta
Deal found 4/20![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 4/23. 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 6/1011:50 am
BIL
- STL
1 stop6h 12m
Delta
Sat 6/208:00 am
STL
- BIL
2 stops11h 01m
Delta
Deal found 4/23![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/235:00 am
BIL
- STL
2 stops9h 46m
United Airlines
Sun 5/245:10 am
STL
- BIL
1 stop5h 24m
United Airlines
Deal found 4/22![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 4/22. 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.
Fri 7/246:34 pm
BIL
- STL
1 stop5h 03m
Delta
Sun 8/21:54 pm
STL
- BIL
2 stops10h 26m
Delta
Deal found 4/22![Delta logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:34 am
BIL
- STL
1 stop8h 49m
Multiple Airlines
Sun 5/173:33 pm
STL
- BIL
2 stops19h 11m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$437
This Delta deal was found by Cheapflights users on 4/22. 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 5/136:19 pm
BIL
- STL
1 stop5h 11m
Delta
Tue 5/195:36 pm
STL
- BIL
1 stop6h 38m
Delta
Deal found 4/22![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Mon 6/16:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Fri 6/55:41 pm
STL
- BIL
1 stop5h 34m
United Airlines
Deal found 4/20![United Airlines logo]()
$467
Best flights from Billings to St. LouisDiscover 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 April 24, 2026.
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 April 24, 2026.
This United Airlines deal was found by Cheapflights users on 4/23. 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 6/106:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Sat 6/205:10 am
STL
- BIL
1 stop5h 25m
United Airlines
Deal found 4/23![United Airlines logo]()
$339
This Delta deal was found by Cheapflights users on 4/20. 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.
Tue 5/56:24 am
BIL
- STL
1 stop7h 05m
Delta
Sat 5/95:00 pm
STL
- BIL
1 stop6h 52m
Delta
Deal found 4/20![Delta logo]()
$369
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/110:00 am
BIL
- STL
1 stop9h 11m
Multiple Airlines
Fri 6/58:08 pm
STL
- BIL
2 stops19h 35m
Multiple Airlines
Deal found 4/21![Multiple Airlines logo]()
$471
This Delta deal was found by Cheapflights users on 4/23. 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 6/1011:50 am
BIL
- STL
1 stop6h 12m
Delta
Sat 6/208:00 am
STL
- BIL
2 stops11h 01m
Delta
Deal found 4/23![Delta logo]()
$376
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/235:00 am
BIL
- STL
2 stops9h 46m
United Airlines
Sun 5/245:10 am
STL
- BIL
1 stop5h 24m
United Airlines
Deal found 4/22![United Airlines logo]()
$403
This Delta deal was found by Cheapflights users on 4/22. 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.
Fri 7/246:34 pm
BIL
- STL
1 stop5h 03m
Delta
Sun 8/21:54 pm
STL
- BIL
2 stops10h 26m
Delta
Deal found 4/22![Delta logo]()
$419
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Mon 6/16:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Fri 6/54:48 pm
STL
- BIL
1 stop5h 29m
United Airlines
Deal found 4/21![United Airlines logo]()
$467
This Delta deal was found by Cheapflights users on 4/22. 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.
Fri 5/156:19 pm
BIL
- STL
1 stop5h 11m
Delta
Mon 5/185:36 pm
STL
- BIL
1 stop6h 38m
Delta
Deal found 4/22![Delta logo]()
$489
Last-minute flights from Billings to St. LouisDiscover last-minute flight deals from Billings to St. Louis. Data last updated April 24, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to St. Louis. Data last updated April 24, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 4/20. 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.
Tue 5/56:24 am
BIL
- STL
1 stop7h 05m
Delta
Sat 5/95:00 pm
STL
- BIL
1 stop6h 52m
Delta
Deal found 4/20![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 4/22. 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 5/136:19 pm
BIL
- STL
1 stop5h 11m
Delta
Tue 5/195:36 pm
STL
- BIL
1 stop6h 38m
Delta
Deal found 4/22![Delta logo]()
$457
This Delta deal was found by Cheapflights users on 4/22. 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 5/136:19 pm
BIL
- STL
1 stop5h 11m
Delta
Wed 5/206:21 am
STL
- BIL
1 stop17h 53m
Delta
Deal found 4/22![Delta logo]()
$478
This Delta deal was found by Cheapflights users on 4/22. 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 5/136:19 pm
BIL
- STL
1 stop5h 11m
Delta
Mon 5/185:36 pm
STL
- BIL
1 stop6h 38m
Delta
Deal found 4/22![Delta logo]()
$489
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:34 am
BIL
- STL
1 stop8h 49m
Multiple Airlines
Sun 5/173:33 pm
STL
- BIL
2 stops19h 11m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$437
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1510:34 am
BIL
- STL
2 stops31h 49m
Multiple Airlines
Thu 5/219:06 pm
STL
- BIL
1 stop13h 04m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$485
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/2312:42 pm
BIL
- STL
1 stop6h 48m
American Airlines
Sun 5/246:00 am
STL
- BIL
1 stop7h 12m
American Airlines
Deal found 4/22![American Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Sat 5/235:00 am
BIL
- STL
2 stops9h 46m
United Airlines
Sun 5/245:10 am
STL
- BIL
1 stop5h 24m
United Airlines
Deal found 4/22![United Airlines logo]()
$403
One-way flights from Billings to St. LouisSearch for one-way flight options from Billings to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
Search for one-way flight options from Billings to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 24, 2026.
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 7/172:25 pm
BIL
- STL
1 stop5h 18m
United Airlines
Deal found 4/22![United Airlines logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:04 am
BIL
- STL
2 stops32h 19m
Multiple Airlines
Deal found 4/22![Multiple Airlines logo]()
$261
This Delta deal was found by Cheapflights users on 4/23. 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.
Mon 7/66:43 pm
BIL
- STL
2 stops13h 48m
Delta
Deal found 4/23![Delta logo]()
$325
This United Airlines deal was found by Cheapflights users on 4/20. 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.
Sun 7/56:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Deal found 4/20![United Airlines logo]()
$379
This American Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 7/1712:35 pm
BIL
- STL
1 stop6h 54m
American Airlines
Deal found 4/22![American Airlines logo]()
$468
This Delta deal was found by Cheapflights users on 4/24. 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.
Sun 7/55:18 am
BIL
- STL
2 stops9h 59m
Delta
Deal found 4/24![Delta logo]()
$475
Find 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 April 24, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (United Airlines) |
One-way from | $253 (United Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $626 |
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 April 24, 2026.
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
Cheapest round-trip
Quickest round-trip
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Wed 6/10
6:00 pm-11:57 pm
1 stop4h 57m
Lambert-St Louis
Sat 6/20
5:10 am-9:35 am
1 stop5h 25m
$339
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Tue 5/5
6:24 am-2:29 pm
1 stop7h 05m
Lambert-St Louis
Sat 5/9
5:00 pm-10:52 pm
1 stop6h 52m
$369
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Wed 6/10
11:50 am-7:02 pm
1 stop6h 12m
Lambert-St Louis
Sat 6/20
8:00 am-6:01 pm
2 stops11h 01m
$376
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Sat 5/23
5:00 am-3:46 pm
2 stops9h 46m
Lambert-St Louis
Sun 5/24
5:10 am-9:34 am
1 stop5h 24m
$403
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Fri 7/24
6:34 pm-12:37 am
1 stop5h 03m
Lambert-St Louis
Sun 8/2
1:54 pm-11:20 pm
2 stops10h 26m
$419
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Mon 6/1
6:00 pm-11:57 pm
1 stop4h 57m
Lambert-St Louis
Fri 6/5
4:48 pm-9:17 pm
1 stop5h 29m
$467
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Mon 6/1
10:00 am-8:11 pm
1 stop9h 11m
Lambert-St Louis
Fri 6/5
8:08 pm-2:43 pm
2 stops19h 35m
$471
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Fri 5/15
6:19 pm-12:30 am
1 stop5h 11m
Lambert-St Louis
Mon 5/18
5:36 pm-11:14 pm
1 stop6h 38m
$489
Cheapest one-way
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Fri 7/17
2:25 pm-8:43 pm
1 stop5h 18m
$253
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Mon 7/6
6:43 pm-9:31 am
2 stops13h 48m
$325
Showing 1-10 of 13 resultsSorted by cheapest first
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 April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
BIL-STL
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
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 April 24, 2026.
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.
Overall
7.9
Comfort
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Comfort
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Overall
7.9
Comfort
7.9
Boarding
8.1
Crew
8.5
Entertainment
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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Billings and St. Louis flights
Browse other Billings and St. Louis flight options. Last updated on April 24, 2026.
Other flights from Billings
Browse through other flights departing from Billings. Flights are based on user searches made on Cheapflights and were last updated on April 24, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 24, 2026.
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 April 24, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$249 | Average$470 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$278 | Average$389 | FlexibilityNo cancel fee | On-timeN/A |