$188+ Cheap flights from Brownsville to St. Louis (BRO - 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
BRO — STL
Oct 20 — Oct 271
Round-trip
1 adult, Economy
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Find cheap flights from Brownsville 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 Brownsville to St. Louis
Cheapest
Best
Last-minute
One-way
Cheapest flights from Brownsville to St. LouisExplore the most affordable flight options available from Brownsville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
Explore the most affordable flight options available from Brownsville to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 20, 2026.
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/184:37 pm -
1 stop5h 53m
Sun 10/256:15 am -
1 stop5h 04m
Deal found 9/20![United Airlines logo]()
$421
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:37 pm -
2 stops8h 42m
Sun 10/255:40 am -
1 stop4h 25m
Deal found 9/20![American Airlines logo]()
$658
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/47:15 am -
1 stop6h 55m
Thu 10/88:35 am -
1 stop7h 16m
Deal found 9/19![United Airlines logo]()
$787
Best flights from Brownsville to St. LouisDiscover carefully curated flight deals from Brownsville to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
Discover carefully curated flight deals from Brownsville to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 20, 2026.
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/184:37 pm -
1 stop5h 53m
Sun 10/256:15 am -
1 stop5h 04m
Deal found 9/20![United Airlines logo]()
$421
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:37 pm -
2 stops8h 42m
Sun 10/255:40 am -
1 stop4h 25m
Deal found 9/20![American Airlines logo]()
$658
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/47:15 am -
1 stop6h 55m
Thu 10/88:35 am -
1 stop7h 16m
Deal found 9/19![United Airlines logo]()
$787
Last-minute flights from Brownsville to St. LouisDiscover last-minute flight deals from Brownsville to St. Louis. Data last updated September 20, 2026 and is based on user searches.
Discover last-minute flight deals from Brownsville to St. Louis. Data last updated September 20, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 9/19. 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 10/47:15 am -
1 stop6h 55m
Thu 10/88:35 am -
1 stop7h 16m
Deal found 9/19![United Airlines logo]()
$787
This United Airlines deal was found by Cheapflights users on 9/20. 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 10/184:37 pm -
1 stop5h 53m
Sun 10/256:15 am -
1 stop5h 04m
Deal found 9/20![United Airlines logo]()
$421
This American Airlines deal was found by Cheapflights users on 9/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/183:37 pm -
2 stops8h 42m
Sun 10/255:40 am -
1 stop4h 25m
Deal found 9/20![American Airlines logo]()
$658
One-way flights from Brownsville to St. LouisSearch for one-way flight options from Brownsville to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
Search for one-way flight options from Brownsville to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/198:45 am -
1 stop14h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/58:45 am -
3 stops52h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 9/19. 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 10/28:45 am -
3 stops50h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![Multiple Airlines logo]()
$295
This American Airlines deal was found by Cheapflights users on 9/19. 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 10/103:37 pm -
1 stop6h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![American Airlines logo]()
$318
This deal was found by Cheapflights users on 9/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/194:37 pm -
1 stop5h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/19![United Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/207:15 am -
2 stops13h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![United Airlines logo]()
$324
Find flight deals from Brownsville to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Brownsville (BRO) 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 September 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $421 (United Airlines) |
One-way from | $188 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $418 |
Cheapflights Fare Finder
Customize your flight search to find flights from Brownsville 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 September 20, 2026.
Use the filters below to find and compare flights from Brownsville to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Mon 10/19
8:45 am-11:13 pm
1 stop14h 28m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$188
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Mon 10/5
8:45 am-1:10 pm
3 stops52h 25m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$286
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Tue 10/20
5:49 am-12:03 pm
1 stop6h 14m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$319
Quickest round-trip
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Mon 10/19
4:37 pm-10:30 pm
1 stop5h 53m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$319
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Tue 10/20
7:15 am-9:09 pm
2 stops13h 54m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$324
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Mon 9/28
8:45 am-11:32 am
2 stops50h 47m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$394
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Sat 10/10
9:10 am-7:41 pm
2 stops10h 31m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$395
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Sun 10/18
4:37 pm-10:30 pm
1 stop5h 53m
Lambert-St Louis
Sun 10/25
6:15 am-11:19 am
1 stop5h 04m
$421
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Sun 10/18
3:37 pm-12:19 am
2 stops8h 42m
Lambert-St Louis
Sun 10/25
5:40 am-10:05 am
1 stop4h 25m
$658
BrownsvilleSt. Louis
BRO Brownsville South Padre Is. Intl - STL Lambert-St Louis
BROSTL
Brownsville South Padre Is. Intl
Sun 10/4
7:15 am-2:10 pm
1 stop6h 55m
Lambert-St Louis
Thu 10/8
8:35 am-3:51 pm
1 stop7h 16m
$787
Sorted by cheapest first
Compare providers for flights from Brownsville 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 Brownsville to St. Louis in September.
| 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 Brownsville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Brownsville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Brownsville-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Brownsville-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 Brownsville-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 Brownsville to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Brownsville with our price prediction graph.
BRO-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 September 20, 2026.
Peruse reviews from past customers who have flown with United Airlines from Brownsville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.4
Comfort
7.3
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Overall
7.4
Comfort
7.3
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Reviews
1 / 20
8.0
ExcellentAnonymous,Apr 2026
DFW - EWR
Related info for your journey
Find useful and relevant information for your journey from Brownsville 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
Collinsville
Edwardsville
Glencoe
Chesterfield
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Brownsville and St. Louis flights
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Top airline flying from Brownsville to St. Louis
Discover the top airline that operate flights from Brownsville 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 September 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$273 | Average$418 | FlexibilityNo cancel fee | On-time69% |