$333+ 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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
BIL — STL
Jul 11 — Jul 181
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
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 June 11, 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 June 11, 2026.
This Delta deal was found by Cheapflights users on 6/7. 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 6/255:20 am
BIL
- STL
1 stop7h 16m
Delta
Tue 6/305:36 pm
STL
- BIL
1 stop6h 24m
Delta
Deal found 6/7![Delta logo]()
$344
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/47:00 am
BIL
- STL
1 stop4h 42m
United Airlines
Fri 7/105:10 am
STL
- BIL
1 stop5h 26m
United Airlines
Deal found 6/8![United Airlines logo]()
$390
This Delta deal was found by Cheapflights users on 6/8. 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 7/36:40 pm
BIL
- STL
1 stop5h 03m
Delta
Mon 7/65:36 pm
STL
- BIL
1 stop7h 01m
Delta
Deal found 6/8![Delta logo]()
$399
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.
Tue 8/254:40 pm
BIL
- STL
1 stop6h 00m
United Airlines
Sat 8/297:25 am
STL
- BIL
2 stops10h 51m
United Airlines
Deal found 6/10![United Airlines logo]()
$414
This Delta deal was found by Cheapflights users on 6/8. 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 7/26:40 pm
BIL
- STL
1 stop5h 03m
Delta
Mon 7/65:36 pm
STL
- BIL
1 stop7h 01m
Delta
Deal found 6/8![Delta logo]()
$459
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 7/67:22 pm
BIL
- STL
1 stop17h 30m
Alaska Airlines
Mon 7/137:56 pm
STL
- BIL
1 stop16h 09m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$623
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 June 11, 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 June 11, 2026.
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.
Sat 7/45:00 am
BIL
- STL
1 stop6h 42m
United Airlines
Fri 7/105:10 am
STL
- BIL
1 stop5h 26m
United Airlines
Deal found 6/10![United Airlines logo]()
$390
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.
Tue 8/254:40 pm
BIL
- STL
1 stop6h 00m
United Airlines
Sat 8/297:25 am
STL
- BIL
2 stops10h 51m
United Airlines
Deal found 6/10![United Airlines logo]()
$414
Last-minute flights from Billings to St. LouisDiscover last-minute flight deals from Billings to St. Louis. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Billings to St. Louis. Data last updated June 11, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/7. 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 6/255:20 am
BIL
- STL
1 stop7h 16m
Delta
Tue 6/305:36 pm
STL
- BIL
1 stop6h 24m
Delta
Deal found 6/7![Delta logo]()
$344
This Delta deal was found by Cheapflights users on 6/8. 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 7/26:40 pm
BIL
- STL
1 stop5h 03m
Delta
Mon 7/65:36 pm
STL
- BIL
1 stop7h 01m
Delta
Deal found 6/8![Delta logo]()
$459
This Expedia deal was found by Cheapflights users on 6/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/23:43 pm
BIL
- STL
2 stops26h 14m
Alaska Airlines
Mon 7/67:56 pm
STL
- BIL
1 stop16h 09m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$641
This Delta deal was found by Cheapflights users on 6/8. 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 7/36:40 pm
BIL
- STL
1 stop5h 03m
Delta
Mon 7/65:36 pm
STL
- BIL
1 stop7h 01m
Delta
Deal found 6/8![Delta logo]()
$399
This United Airlines deal was found by Cheapflights users on 6/8. 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 7/47:00 am
BIL
- STL
1 stop4h 42m
United Airlines
Fri 7/105:10 am
STL
- BIL
1 stop5h 26m
United Airlines
Deal found 6/8![United Airlines logo]()
$390
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 7/67:22 pm
BIL
- STL
1 stop17h 30m
Alaska Airlines
Mon 7/137:56 pm
STL
- BIL
1 stop16h 09m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$623
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 June 11, 2026.
Search for one-way flight options from Billings to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/54:10 pm
BIL
- STL
1 stop6h 47m
United Airlines
Deal found 6/9![United Airlines logo]()
$333
This Alaska Airlines deal was found by Cheapflights users on 6/8. 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.
Mon 7/67:22 pm
BIL
- STL
1 stop17h 30m
Alaska Airlines
Deal found 6/8![Alaska Airlines logo]()
$369
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.
Mon 7/66:00 pm
BIL
- STL
1 stop4h 57m
United Airlines
Deal found 6/10![United Airlines logo]()
$379
This Alaska Airlines deal was found by Cheapflights users on 6/7. 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.
Sun 7/56:00 am
BIL
- STL
2 stops9h 37m
Alaska Airlines
Deal found 6/7![Alaska Airlines logo]()
$602
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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $344 (Delta) |
One-way from | $333 (United Airlines) |
Popular in | November |
Cheapest in | August |
Average price | $520 |
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 11, 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
Sat 7/4
5:00 am-12:42 pm
1 stop6h 42m
Lambert-St Louis
Fri 7/10
5:10 am-9:36 am
1 stop5h 26m
$390
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Tue 8/25
4:40 pm-11:40 pm
1 stop6h 00m
Lambert-St Louis
Sat 8/29
7:25 am-5:16 pm
2 stops10h 51m
$414
Cheapest one-way
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Sun 7/5
4:10 pm-11:57 pm
1 stop6h 47m
$358
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Mon 7/6
7:22 pm-1:52 pm
1 stop17h 30m
$369
Quickest one-way
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Mon 7/6
6:00 pm-11:57 pm
1 stop4h 57m
$384
BillingsSt. Louis
BIL - STL
BILSTL
Billings Logan Intl
Sun 7/5
6:00 am-4:37 pm
2 stops9h 37m
$602
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 June.
| 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 June 11, 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.
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Food
7.2
Overall
7.9
Comfort
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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Billings and St. Louis flights
Browse other Billings and St. Louis flight options. Last updated on June 11, 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 June 11, 2026.
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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 June 11, 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 June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$249 | Average$520 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$278 | Average$389 | FlexibilityNo cancel fee | On-timeN/A |