$265+ Cheap flights from Billings to St. Louis (BIL - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Nov 26 — Dec 31
Round-trip
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
Cheapest
Best
Last-minute
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 October 27, 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 October 27, 2026.
This Delta deal was found by Cheapflights users on 10/22. 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 11/65:20 am -
1 stop7h 12m
Tue 11/103:30 pm -
1 stop5h 07m
Deal found 10/22![Delta logo]()
$484
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/22:42 pm -
1 stop5h 17m
Thu 11/58:50 am -
1 stop5h 39m
Deal found 10/26![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 10/22. 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 10/305:00 am -
1 stop6h 38m
Sat 10/311:08 pm -
2 stops9h 06m
Deal found 10/22![United Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 10/22. 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 10/306:00 am -
2 stops13h 57m
Sat 10/3111:31 am -
2 stops10h 41m
Deal found 10/22![American Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/62:42 pm -
1 stop5h 17m
Tue 11/107:30 am -
2 stops10h 44m
Deal found 10/22![United Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 10/22. 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.
Tue 12/226:16 am -
1 stop16h 12m
Mon 12/286:30 am -
1 stop14h 25m
Deal found 10/22![Delta logo]()
$671
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Wed 12/232:57 pm -
1 stop24h 45m
Tue 12/295:37 pm -
1 stop21h 30m
Deal found 10/22![Multiple Airlines logo]()
$698
This Delta deal was found by Cheapflights users on 10/24. 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 11/26:29 pm -
2 stops13h 48m
Thu 11/53:35 pm -
1 stop5h 40m
Deal found 10/24![Delta logo]()
$714
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/21:23 pm -
1 stop7h 36m
Thu 11/55:00 am -
1 stop8h 53m
Deal found 10/25![American Airlines logo]()
$747
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 11/215:35 am -
1 stop6h 56m
Sat 11/282:21 pm -
2 stops8h 59m
Deal found 10/22![Delta logo]()
$768
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 October 27, 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 October 27, 2026.
This Delta deal was found by Cheapflights users on 10/23. 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 3/126:25 pm -
1 stop5h 11m
Mon 3/153:45 pm -
1 stop5h 03m
Deal found 10/23![Delta logo]()
$404
This United Airlines deal was found by Cheapflights users on 10/26. 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 1/307:00 am -
1 stop6h 03m
Wed 2/38:52 am -
1 stop5h 38m
Deal found 10/26![United Airlines logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 10/22. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:00 am -
1 stop6h 56m
Wed 2/33:54 pm -
2 stops23h 00m
Deal found 10/22![Alaska Airlines logo]()
$519
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/62:42 pm -
1 stop5h 17m
Tue 11/107:30 am -
2 stops10h 44m
Deal found 10/22![United Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 11/215:35 am -
1 stop6h 56m
Sat 11/282:21 pm -
2 stops8h 59m
Deal found 10/22![Delta logo]()
$768
This Delta deal was found by Cheapflights users on 10/22. 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 12/236:16 am -
1 stop16h 12m
Mon 12/286:30 am -
1 stop14h 25m
Deal found 10/22![Delta logo]()
$801
Last-minute flights from Billings to St. LouisDiscover last-minute flight deals from Billings to St. Louis. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to St. Louis. Data last updated October 27, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/22. 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 10/305:00 am -
1 stop6h 38m
Sat 10/311:08 pm -
2 stops9h 06m
Deal found 10/22![United Airlines logo]()
$494
This American Airlines deal was found by Cheapflights users on 10/22. 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 10/306:00 am -
2 stops13h 57m
Sat 10/3111:31 am -
2 stops10h 41m
Deal found 10/22![American Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 10/26. 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 11/22:42 pm -
1 stop5h 17m
Thu 11/58:50 am -
1 stop5h 39m
Deal found 10/26![United Airlines logo]()
$489
This Delta deal was found by Cheapflights users on 10/24. 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 11/26:29 pm -
2 stops13h 48m
Thu 11/53:35 pm -
1 stop5h 40m
Deal found 10/24![Delta logo]()
$714
This American Airlines deal was found by Cheapflights users on 10/25. 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 11/21:23 pm -
1 stop7h 36m
Thu 11/55:00 am -
1 stop8h 53m
Deal found 10/25![American Airlines logo]()
$747
This Delta deal was found by Cheapflights users on 10/22. 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 11/65:20 am -
1 stop7h 12m
Tue 11/103:30 pm -
1 stop5h 07m
Deal found 10/22![Delta logo]()
$484
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/62:42 pm -
1 stop5h 17m
Tue 11/107:30 am -
2 stops10h 44m
Deal found 10/22![United Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 10/22. 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.
Sat 11/215:35 am -
1 stop6h 56m
Sat 11/282:21 pm -
2 stops8h 59m
Deal found 10/22![Delta logo]()
$768
This American Airlines deal was found by Cheapflights users on 10/22. 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 11/211:32 pm -
1 stop6h 41m
Sat 11/286:00 am -
1 stop8h 02m
Deal found 10/22![American Airlines logo]()
$824
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 October 27, 2026.
Search for one-way flight options from Billings to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Mon 11/27:59 pm -
2 stops42h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sun 11/110:30 am -
1 stop5h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![United Airlines logo]()
$438
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sun 11/111:55 am -
3 stops25h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Multiple Airlines logo]()
$973
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 October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $404 (Delta) |
One-way from | $265 (Kiwi.com) |
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 7,457,451 searches. Data last updated October 27, 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
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Fri 3/12
6:25 pm-12:36 am
1 stop5h 11m
Lambert-St Louis
Mon 3/15
3:45 pm-7:48 pm
1 stop5h 03m
$404
Quickest round-trip
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Sun 11/1
10:30 am-4:57 pm
1 stop5h 27m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$438
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Mon 11/2
1:23 pm-9:59 pm
1 stop7h 36m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$438
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Sat 1/30
7:00 am-2:03 pm
1 stop6h 03m
Lambert-St Louis
Wed 2/3
8:52 am-1:30 pm
1 stop5h 38m
$459
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Fri 11/6
2:42 pm-8:59 pm
1 stop5h 17m
Lambert-St Louis
Tue 11/10
7:30 am-5:14 pm
2 stops10h 44m
$513
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Sat 1/30
7:00 am-2:56 pm
1 stop6h 56m
Lambert-St Louis
Wed 2/3
3:54 pm-1:54 pm
2 stops23h 00m
$519
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Sat 11/21
5:35 am-1:31 pm
1 stop6h 56m
Lambert-St Louis
Sat 11/28
2:21 pm-10:20 pm
2 stops8h 59m
$768
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Wed 12/23
6:16 am-11:28 pm
1 stop16h 12m
Lambert-St Louis
Mon 12/28
6:30 am-7:55 pm
1 stop14h 25m
$801
BillingsSt. Louis
BIL Billings Logan Intl - STL Lambert-St Louis
BILSTL
Billings Logan Intl
Sun 11/1
11:55 am-2:46 pm
3 stops25h 51m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$973
Sorted 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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.
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 October 27, 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.
Entertainment
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - ATL
Entertainment
7.8
Overall
7.8
Crew
8.5
Boarding
8.1
Comfort
7.8
Food
7.2
Reviews
1 / 20
6.0
GoodEllen,Oct 2026
GRR - 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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Billings
Popular flights
St. Louis flight routes
Alternative routes for Billings to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Billings to St. Louis by cabin class
Find flights from Billings to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Billings and St. Louis flights
Browse other Billings and St. Louis flight options. Last updated on October 27, 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 October 27, 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 October 27, 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 7,457,451 searches. Data last updated October 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$278 | Average$388 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$279 | Average$540 | FlexibilityNo cancel fee | On-time69% |