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$160+ Cheap flights from St. Louis to Brownsville (STL - BRO)

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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BRO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 11, 2025.

Round-trip from

$259
(United Airlines)

One-way from

$160
(American Airlines)

Popular in

July

Cheapest in

February

Average price

$372
From Lambert-St Louis to Brownsville South Padre Is. Intl
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One-way flight from Lambert-St Louis to Brownsville South Padre Is. Intl
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Highest demand for flights based on searches. 1% potential increase in price ($3 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from St. Louis to Brownsville

Cheapest flights from St. Louis to Brownsville
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 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 10/217:16 amSTL - BRO
2 stops10h 52mAmerican Airlines
Fri 10/246:38 pmBRO - STL
1 stop4h 40mAmerican Airlines
Deal found 9/11$319
This United Airlines deal was found by Cheapflights users on 9/9. 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 10/126:15 amSTL - BRO
1 stop5h 05mUnited Airlines
Wed 10/155:15 pmBRO - STL
1 stop4h 45mUnited Airlines
Deal found 9/9$389
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/213:23 pmSTL - BRO
2 stops8h 10mUnited Airlines
Fri 10/245:15 pmBRO - STL
2 stops22h 29mUnited Airlines
Deal found 9/11$481

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 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from St. Louis to Brownsville that are best for you.

Fly from

St. Louis

Fly to

Brownsville

Route

Depart

Return

Price

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 2/23

6:15 am-11:22 am

1 stop5h 07m

Brownsville South Padre Is. Intl

Sat 2/28

2:18 pm-8:21 pm

1 stop6h 03m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/21

7:16 am-6:08 pm

2 stops10h 52m

Brownsville South Padre Is. Intl

Fri 10/24

6:38 pm-11:18 pm

1 stop4h 40m

$319

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Fri 1/16

10:07 am-6:02 pm

1 stop7h 55m

Brownsville South Padre Is. Intl

Mon 1/19

5:25 pm-10:00 pm

1 stop4h 35m

$380

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 10/12

6:15 am-11:20 am

1 stop5h 05m

Brownsville South Padre Is. Intl

Wed 10/15

5:15 pm-10:00 pm

1 stop4h 45m

$389

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 3/10

11:20 am-3:38 pm

1 stop4h 18m

Brownsville South Padre Is. Intl

Wed 3/11

5:10 am-9:42 am

1 stop4h 32m

$389

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 11/9

5:17 am-9:55 am

1 stop4h 38m

$160

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 11/10

5:17 am-10:09 am

1 stop4h 52m

$160

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 10/19

5:11 am-10:01 am

1 stop4h 50m

$185

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 11/9

9:00 am-11:36 pm

2 stops14h 36m

$369

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 10/19

10:22 am-7:50 pm

3 stops57h 28m

$584

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

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.
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 Brownsville

What is the cheapest month to book a flight from St. Louis to Brownsville?

Currently, August is the cheapest month in which you can book a flight from St. Louis to Brownsville (average of $328). Flying from St. Louis to Brownsville in March is currently the most expensive (average of $474). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to BRO?

Find hourly flight availability from St. Louis to Brownsville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 28% on flights from St. Louis to Brownsville by exploring options for tickets at noon.

How much does it cost to fly round-trip from St. Louis to Brownsville?

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 11, 2025.
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.
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Crew

8.1

Food

6.6

Overall

7.4

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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.

  • How long is the flight from St. Louis to Brownsville?

    United Airlines and American Airlines can get you from St. Louis to Brownsville in just under 5h 07m. Your travel time can differ by up to 5h 45m. St. Louis and Brownsville are separated by a distance of 977 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from St. Louis to Brownsville round-trip?

    United Airlines, at $258, was found to be the cheapest airline from St. Louis to Brownsville. An alternate airline flying to your destination would be American Airlines. United Airlines is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from St. Louis to Brownsville that include hotel bookings?

    Yes. In addition to deals on St. Louis to Brownsville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Brownsville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Brownsville.

  • Can I find deals for business class flights from St. Louis to Brownsville?

    Yes. Cheapflights offers flight deals from St. Louis to Brownsville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Brownsville?

    Currently, August is the cheapest month in which you can book a flight from St. Louis to Brownsville (average of $328). Flying from St. Louis to Brownsville in March is currently the most expensive (average of $474). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$258Average$350FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$288Average$424FlexibilityNo cancel feeOn-time71%

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