$188+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BIL
May 26 — Jun 21
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Billings 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 St. Louis to Billings
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Best
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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 April 26, 2026.
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 April 26, 2026.
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.
Thu 5/285:36 pm
STL
- BIL
1 stop6h 38m
Delta
Tue 6/26:30 am
BIL
- STL
1 stop7h 01m
Delta
Deal found 4/23![Delta logo]()
$339
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/185:30 pm
STL
- BIL
1 stop6h 07m
Delta
Mon 8/246:15 am
BIL
- STL
2 stops8h 42m
Delta
Deal found 4/21![Delta logo]()
$359
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.
Sat 7/115:33 pm
STL
- BIL
1 stop5h 47m
United Airlines
Tue 7/146:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Deal found 4/21![United Airlines logo]()
$361
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 am
STL
- BIL
1 stop6h 12m
American Airlines
Tue 6/212:42 pm
BIL
- STL
1 stop6h 48m
American Airlines
Deal found 4/21![American Airlines logo]()
$371
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:59 am
STL
- BIL
2 stops11h 06m
Delta
Sun 5/106:19 pm
BIL
- STL
1 stop5h 11m
Delta
Deal found 4/21![Delta logo]()
$374
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.
Wed 6/104:19 pm
STL
- BIL
2 stops8h 18m
Delta
Wed 6/175:18 am
BIL
- STL
2 stops8h 58m
Delta
Deal found 4/24![Delta logo]()
$381
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
STL
- BIL
1 stop7h 10m
American Airlines
Wed 6/1712:44 pm
BIL
- STL
1 stop6h 42m
American Airlines
Deal found 4/24![American Airlines logo]()
$403
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/118:00 am
STL
- BIL
2 stops12h 59m
Delta
Tue 7/145:18 am
BIL
- STL
1 stop7h 20m
Delta
Deal found 4/21![Delta logo]()
$404
Best flights from St. Louis to BillingsDiscover 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 April 26, 2026.
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 April 26, 2026.
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.
Wed 8/199:00 am
STL
- BIL
1 stop5h 20m
United Airlines
Mon 8/245:57 pm
BIL
- STL
1 stop4h 53m
United Airlines
Deal found 4/21![United Airlines logo]()
$339
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.
Fri 7/33:45 pm
STL
- BIL
2 stops8h 52m
Delta
Tue 7/145:18 am
BIL
- STL
1 stop7h 20m
Delta
Deal found 4/24![Delta logo]()
$391
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.
Tue 8/189:00 am
STL
- BIL
1 stop5h 20m
United Airlines
Sun 8/235:57 pm
BIL
- STL
1 stop4h 53m
United Airlines
Deal found 4/21![United Airlines logo]()
$339
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.
Wed 6/105:10 am
STL
- BIL
1 stop5h 25m
United Airlines
Wed 6/176:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Deal found 4/21![United 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.
Thu 7/235:10 am
STL
- BIL
1 stop5h 24m
United Airlines
Tue 7/286:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Deal found 4/22![United Airlines logo]()
$339
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/35:42 pm
STL
- BIL
1 stop6h 55m
Delta
Wed 7/155:18 am
BIL
- STL
1 stop7h 20m
Delta
Deal found 4/21![Delta logo]()
$419
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.
Mon 5/185:36 pm
STL
- BIL
1 stop6h 38m
Delta
Wed 5/206:30 am
BIL
- STL
1 stop7h 01m
Delta
Deal found 4/24![Delta logo]()
$475
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.
Sun 8/235:10 am
STL
- BIL
1 stop5h 31m
United Airlines
Fri 8/287:00 am
BIL
- STL
1 stop4h 40m
United Airlines
Deal found 4/23![United Airlines logo]()
$411
Last-minute flights from St. Louis to BillingsDiscover last-minute flight deals from St. Louis to Billings. Data last updated April 26, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Billings. Data last updated April 26, 2026 and is based on user searches.
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.
Wed 4/293:38 pm
STL
- BIL
1 stop8h 05m
American Airlines
Sat 5/21:51 pm
BIL
- STL
1 stop8h 05m
American Airlines
Deal found 4/22![American Airlines logo]()
$477
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/69:59 am
STL
- BIL
2 stops11h 06m
Delta
Sun 5/106:19 pm
BIL
- STL
1 stop5h 11m
Delta
Deal found 4/21![Delta logo]()
$374
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.
Wed 5/65:59 pm
STL
- BIL
1 stop5h 46m
United Airlines
Sun 5/106:35 am
BIL
- STL
1 stop5h 38m
United Airlines
Deal found 4/21![United Airlines logo]()
$424
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.
Mon 5/185:36 pm
STL
- BIL
1 stop6h 38m
Delta
Wed 5/206:30 am
BIL
- STL
1 stop7h 01m
Delta
Deal found 4/24![Delta logo]()
$475
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/257:00 am
STL
- BIL
1 stop6h 12m
American Airlines
Tue 6/212:42 pm
BIL
- STL
1 stop6h 48m
American Airlines
Deal found 4/21![American Airlines logo]()
$371
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.
Thu 5/285:36 pm
STL
- BIL
1 stop6h 38m
Delta
Tue 6/26:30 am
BIL
- STL
1 stop7h 01m
Delta
Deal found 4/23![Delta logo]()
$339
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.
Fri 5/293:11 pm
STL
- BIL
2 stops8h 41m
Delta
Sun 5/316:30 am
BIL
- STL
1 stop7h 01m
Delta
Deal found 4/23![Delta logo]()
$444
One-way flights from St. Louis to BillingsSearch for one-way flight options from St. Louis to Billings. Find affordable one-way fares based on user searches. Data last updated April 26, 2026.
Search for one-way flight options from St. Louis to Billings. Find affordable one-way fares based on user searches. Data last updated April 26, 2026.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:30 pm
STL
- BIL
2 stops48h 13m
Multiple Airlines
Deal found 4/23![Multiple Airlines logo]()
$188
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.
Tue 6/25:36 pm
STL
- BIL
1 stop6h 38m
Delta
Deal found 4/24![Delta logo]()
$202
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:48 pm
STL
- BIL
1 stop5h 29m
United Airlines
Deal found 4/24![United Airlines logo]()
$279
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.
Sat 5/164:15 pm
STL
- BIL
1 stop7h 30m
United Airlines
Deal found 4/21![United Airlines logo]()
$310
Find flight deals from St. Louis to Billings
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Billings (BIL). 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 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Delta) |
One-way from | $188 (Kiwi.com) |
Popular in | May |
Cheapest in | March |
Average price | $425 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Billings 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 26, 2026.
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
Cheapest round-trip
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Wed 8/19
9:00 am-1:20 pm
1 stop5h 20m
Billings Logan Intl
Mon 8/24
5:57 pm-11:50 pm
1 stop4h 53m
$339
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Tue 8/18
9:00 am-1:20 pm
1 stop5h 20m
Billings Logan Intl
Sun 8/23
5:57 pm-11:50 pm
1 stop4h 53m
$339
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Wed 6/10
5:10 am-9:35 am
1 stop5h 25m
Billings Logan Intl
Wed 6/17
6:00 pm-11:57 pm
1 stop4h 57m
$339
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Thu 7/23
5:10 am-9:34 am
1 stop5h 24m
Billings Logan Intl
Tue 7/28
6:00 pm-11:57 pm
1 stop4h 57m
$339
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Fri 7/3
3:45 pm-11:37 pm
2 stops8h 52m
Billings Logan Intl
Tue 7/14
5:18 am-1:38 pm
1 stop7h 20m
$391
Quickest round-trip
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Sun 8/23
5:10 am-9:41 am
1 stop5h 31m
Billings Logan Intl
Fri 8/28
7:00 am-12:40 pm
1 stop4h 40m
$411
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Fri 7/3
5:42 pm-11:37 pm
1 stop6h 55m
Billings Logan Intl
Wed 7/15
5:18 am-1:38 pm
1 stop7h 20m
$419
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Mon 5/18
5:36 pm-11:14 pm
1 stop6h 38m
Billings Logan Intl
Wed 5/20
6:30 am-2:31 pm
1 stop7h 01m
$475
Cheapest one-way
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Tue 6/2
1:59 pm-10:52 pm
2 stops9h 53m
$207
Quickest one-way
St. LouisBillings
STL - BIL
STLBIL
Lambert-St Louis
Thu 7/2
4:48 pm-9:17 pm
1 stop5h 29m
$279
Showing 1-10 of 15 resultsSorted by cheapest first
Compare providers for flights from St. Louis to Billings
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 St. Louis to Billings 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 St. Louis-Billings flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Billings flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Billings flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Billings 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 St. Louis-Billings 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 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.
STL-BIL
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
Reviews of airlines servicing Billings
Get insights into the airlines that provide service to Billings. 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 Billings. Reviews last updated April 26, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican 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.
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Boarding
8.1
Overall
7.9
Entertainment
7.8
Comfort
7.9
Crew
8.5
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
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.
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Other flights to Billings
Explore flights to Billings departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 26, 2026.
Complete your trip
Complete your trip to Billings by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Billings, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Billings flights
Browse other St. Louis and Billings flight options. Last updated on April 26, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on April 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from St. Louis to Billings
Discover the top 3 airlines that operate flights from St. Louis to Billings. 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 26, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$322 | Average$386 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$332 | Average$466 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$385 | Average$431 | FlexibilityNo cancel fee | On-time71% |