$349+ Cheap flights from St. Louis to Brownsville (STL - BRO)
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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRO
Oct 8 — Oct 151
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Brownsville 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 Brownsville
Cheapest
Best
Last-minute
Cheapest flights from St. Louis to BrownsvilleExplore the most affordable flight options available from St. Louis to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
Explore the most affordable flight options available from St. Louis to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 8, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/103:12 pm -
1 stop6h 38m
Mon 10/124:37 pm -
1 stop5h 53m
Deal found 9/6![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 9/5. 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.
Thu 12/108:29 am -
1 stop6h 40m
Sun 12/133:39 pm -
1 stop6h 20m
Deal found 9/5![American Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/5. 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 12/106:00 am -
2 stops13h 38m
Sun 12/137:00 am -
1 stop7h 06m
Deal found 9/5![United Airlines logo]()
$434
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:27 am -
2 stops11h 23m
Fri 10/169:10 am -
2 stops11h 59m
Deal found 9/7![United Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:12 pm -
1 stop6h 38m
Sun 10/47:15 am -
1 stop6h 55m
Deal found 9/7![United Airlines logo]()
$454
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/125:43 am -
1 stop4h 26m
Sun 9/136:37 pm -
1 stop5h 06m
Deal found 9/3![American Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/5. 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 12/286:15 am -
1 stop5h 15m
Fri 1/14:30 pm -
1 stop6h 00m
Deal found 9/5![United Airlines logo]()
$477
This American Airlines deal was found by Cheapflights users on 9/4. 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.
Thu 9/1012:46 pm -
1 stop5h 21m
Mon 9/142:47 pm -
1 stop4h 20m
Deal found 9/4![American Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 9/4. 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 9/108:00 am -
2 stops10h 13m
Mon 9/144:38 pm -
1 stop5h 52m
Deal found 9/4![United Airlines logo]()
$564
Best flights from St. Louis to BrownsvilleDiscover carefully curated flight deals from St. Louis to Brownsville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
Discover carefully curated flight deals from St. Louis to Brownsville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 8, 2026.
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/96:15 am -
1 stop5h 08m
Mon 10/124:37 pm -
1 stop5h 53m
Deal found 9/6![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/103:12 pm -
1 stop6h 38m
Fri 10/169:10 am -
1 stop5h 00m
Deal found 9/5![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/3. 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 1/303:03 pm -
1 stop6h 48m
Wed 2/34:38 pm -
1 stop5h 35m
Deal found 9/3![United Airlines logo]()
$409
Last-minute flights from St. Louis to BrownsvilleDiscover last-minute flight deals from St. Louis to Brownsville. Data last updated September 8, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Brownsville. Data last updated September 8, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/3. 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.
Thu 9/1012:46 pm -
1 stop5h 21m
Mon 9/142:47 pm -
1 stop4h 20m
Deal found 9/3![American Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 9/3. 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 9/108:00 am -
2 stops10h 13m
Mon 9/144:38 pm -
1 stop5h 52m
Deal found 9/3![United Airlines logo]()
$554
This American Airlines deal was found by Cheapflights users on 9/3. 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 9/127:27 am -
2 stops12h 38m
Sun 9/136:37 pm -
1 stop5h 06m
Deal found 9/3![American Airlines logo]()
$606
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/283:12 pm -
1 stop6h 38m
Sun 10/47:15 am -
1 stop6h 55m
Deal found 9/7![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:12 pm -
1 stop6h 38m
Fri 10/169:10 am -
1 stop5h 00m
Deal found 9/7![United Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/6. 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 10/1010:27 am -
2 stops11h 23m
Mon 10/124:37 pm -
1 stop5h 53m
Deal found 9/6![United Airlines logo]()
$354
Find flight deals from St. Louis to Brownsville
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Brownsville (BRO). 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 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $349 (United Airlines) |
Popular in | July |
Cheapest in | February |
Average price | $758 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Brownsville 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 8, 2026.
Use the filters below to find and compare flights from St. Louis to Brownsville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisBrownsville
STL Lambert-St Louis - BRO Brownsville South Padre Is. Intl
STLBRO
Lambert-St Louis
Fri 10/9
6:15 am-11:23 am
1 stop5h 08m
Brownsville South Padre Is. Intl
Mon 10/12
4:37 pm-10:30 pm
1 stop5h 53m
$349
St. LouisBrownsville
STL Lambert-St Louis - BRO Brownsville South Padre Is. Intl
STLBRO
Lambert-St Louis
Sat 10/10
3:12 pm-9:50 pm
1 stop6h 38m
Brownsville South Padre Is. Intl
Fri 10/16
9:10 am-2:10 pm
1 stop5h 00m
$349
St. LouisBrownsville
STL Lambert-St Louis - BRO Brownsville South Padre Is. Intl
STLBRO
Lambert-St Louis
Sat 1/30
3:03 pm-9:51 pm
1 stop6h 48m
Brownsville South Padre Is. Intl
Wed 2/3
4:38 pm-10:13 pm
1 stop5h 35m
$409
Sorted by cheapest first
Compare providers for flights from St. Louis to Brownsville
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 Brownsville 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 St. Louis-Brownsville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Brownsville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Brownsville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-Brownsville 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-Brownsville 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 Brownsville
Have a flexible travel schedule? Discover the best time to fly to Brownsville from St. Louis with our price prediction graph.
STL-BRO
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 Brownsville
Get insights into the airlines that provide service to Brownsville. 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 Brownsville. Reviews last updated September 8, 2026.
Read through reviews of airlines operating flights from St. Louis to Brownsville, such as United Airlines and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreIsaac,May 2024
SHV - IAH
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreIsaac,May 2024
SHV - IAH
Boarding
7.7
Comfort
7.3
Food
6.6
Entertainment
7.1
Crew
8.1
Overall
7.4
Reviews
1 / 20
2.0
MediocreIsaac,May 2024
SHV - IAH
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Brownsville. 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 Brownsville
Explore flights to Brownsville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 8, 2026.
Complete your trip
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St. Louis and Brownsville flights
Browse other St. Louis and Brownsville flight options. Last updated on September 8, 2026.
Other flights from St. Louis
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Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 2 airlines flying from St. Louis to Brownsville
Discover the top 2 airlines that operate flights from St. Louis to Brownsville. 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 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$510 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$278 | Average$403 | FlexibilityNo cancel fee | On-time69% |