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Cheap flights from St. Louis to Brownsville from $259

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Brownsville departing on 9/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

American Airlines Logo
5:18 am - 10:11 amSTL-BRO
4h 53m1 stop
American Airlines Logo
6:39 pm - 10:50 pmBRO-STL
4h 11m1 stop
$259American Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
American Airlines Logo
4:00 pm - 10:59 pmSTL-BRO
6h 59m1 stop
American Airlines Logo
5:26 am - 11:52 amBRO-STL
6h 26m1 stop
$274American Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
American Airlines Logo
4:00 pm - 10:59 pmSTL-BRO
6h 59m1 stop
American Airlines Logo
5:26 am - 3:37 pmBRO-STL
10h 11m2 stops
$279American Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
American Airlines Logo
5:30 pm - 10:59 pmSTL-BRO
5h 29m1 stop
American Airlines Logo
6:39 pm - 10:50 pmBRO-STL
4h 11m1 stop
$289American Airlines
Find Deal
Tue, Sep 2 - Sat, Sep 6
American Airlines Logo
4:00 pm - 10:59 pmSTL-BRO
6h 59m1 stop
American Airlines Logo
5:26 am - 3:52 pmBRO-STL
10h 26m2 stops
$294American Airlines
Find Deal
Tue, Sep 2 - Sat, Sep 6
American Airlines Logo
5:18 am - 10:11 amSTL-BRO
4h 53m1 stop
American Airlines Logo
3:04 pm - 11:48 pmBRO-STL
8h 44m2 stops
$319American Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
American Airlines Logo
4:00 pm - 10:59 pmSTL-BRO
6h 59m1 stop
American Airlines Logo
5:26 am - 1:23 pmBRO-STL
7h 57m2 stops
$334American Airlines
Find Deal
Tue, Sep 2 - Tue, Sep 9
United Airlines Logo
6:15 am - 11:20 amSTL-BRO
5h 05m1 stop
United Airlines Logo
5:15 pm - 10:04 pmBRO-STL
4h 49m1 stop
$384United Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
United Airlines Logo
12:25 pm - 11:33 pmSTL-BRO
11h 08m2 stops
United Airlines Logo
7:15 am - 3:47 pmBRO-STL
8h 32m2 stops
$394United Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
United Airlines Logo
7:04 pm - 11:21 amSTL-BRO
16h 17m2 stops
United Airlines Logo
9:45 am - 11:44 pmBRO-STL
13h 59m2 stops
$422United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22

American Airlines flights from St. Louis to Brownsville

Our best American Airlines deals on St. Louis to Brownsville flight tickets
American Airlines
Sep 15
STL5:18 amLambert-St Louis
4h 53m
1 stop
BRO10:11 amBrownsville South Padre Is. Intl
Sep 22
BRO6:39 pmBrownsville South Padre Is. Intl
4h 11m
1 stop
STL10:50 pmLambert-St Louis
$259
Find similar
American Airlines
Sep 2
STL4:00 pmLambert-St Louis
6h 59m
1 stop
BRO10:59 pmBrownsville South Padre Is. Intl
Sep 9
BRO5:26 amBrownsville South Padre Is. Intl
6h 26m
1 stop
STL11:52 amLambert-St Louis
$274
Find similar
American Airlines
Sep 2
STL4:00 pmLambert-St Louis
6h 59m
1 stop
BRO10:59 pmBrownsville South Padre Is. Intl
Sep 9
BRO5:26 amBrownsville South Padre Is. Intl
10h 11m
2 stops
STL3:37 pmLambert-St Louis
$279
Find similar

United Airlines flights from St. Louis to Brownsville

Our best United Airlines deals on St. Louis to Brownsville flight tickets
United Airlines
Oct 21
STL6:15 amLambert-St Louis
5h 05m
1 stop
BRO11:20 amBrownsville South Padre Is. Intl
Oct 28
BRO5:15 pmBrownsville South Padre Is. Intl
4h 49m
1 stop
STL10:04 pmLambert-St Louis
$384
Find similar
United Airlines
Oct 21
STL12:25 pmLambert-St Louis
11h 08m
2 stops
BRO11:33 pmBrownsville South Padre Is. Intl
Oct 28
BRO7:15 amBrownsville South Padre Is. Intl
8h 32m
2 stops
STL3:47 pmLambert-St Louis
$394
Find similar
United Airlines
Sep 15
STL7:04 pmLambert-St Louis
16h 17m
2 stops
BRO11:21 amBrownsville South Padre Is. Intl
Sep 22
BRO9:45 amBrownsville South Padre Is. Intl
13h 59m
2 stops
STL11:44 pmLambert-St Louis
$422
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
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

Price

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 9/15

5:18 am-10:11 am

1 stop4h 53m

Brownsville South Padre Is. Intl

Mon 9/22

6:39 pm-10:50 pm

1 stop4h 11m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/2

4:00 pm-10:59 pm

1 stop6h 59m

Brownsville South Padre Is. Intl

Tue 9/9

5:26 am-11:52 am

1 stop6h 26m

$274

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/2

4:00 pm-10:59 pm

1 stop6h 59m

Brownsville South Padre Is. Intl

Tue 9/9

5:26 am-3:37 pm

2 stops10h 11m

$279

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/2

5:30 pm-10:59 pm

1 stop5h 29m

Brownsville South Padre Is. Intl

Sat 9/6

6:39 pm-10:50 pm

1 stop4h 11m

$289

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/2

4:00 pm-10:59 pm

1 stop6h 59m

Brownsville South Padre Is. Intl

Sat 9/6

5:26 am-3:52 pm

2 stops10h 26m

$294

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 9/15

5:18 am-10:11 am

1 stop4h 53m

Brownsville South Padre Is. Intl

Mon 9/22

3:04 pm-11:48 pm

2 stops8h 44m

$319

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/2

4:00 pm-10:59 pm

1 stop6h 59m

Brownsville South Padre Is. Intl

Tue 9/9

5:26 am-1:23 pm

2 stops7h 57m

$334

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/21

6:15 am-11:20 am

1 stop5h 05m

Brownsville South Padre Is. Intl

Tue 10/28

5:15 pm-10:04 pm

1 stop4h 49m

$384

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/21

12:25 pm-11:33 pm

2 stops11h 08m

Brownsville South Padre Is. Intl

Tue 10/28

7:15 am-3:47 pm

2 stops8h 32m

$394

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 9/15

7:04 pm-11:21 am

2 stops16h 17m

Brownsville South Padre Is. Intl

Mon 9/22

9:45 am-11:44 pm

2 stops13h 59m

$422

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to Brownsville from

How to get the cheapest flight ticket from St. Louis to Brownsville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Brownsville?

The month of November is another great option to travel to Brownsville, with average flight prices from St. Louis averaging around $348.

What is the cheapest day to depart on your flight to Brownsville?

The cheapest day to depart from St. Louis to Brownsville is on a Tuesday. Travelers who choose to depart for Brownsville on a Tuesday will often find tickets for as low as $320. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Brownsville on Sunday is $429.

What is the cheapest time of day to depart on your flight to Brownsville?

Flying to Brownsville from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as $281 when looking at flights departing at noon. Flights to Brownsville are more costly in the afternoon, with an average ticket price of $388. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from St. Louis to Brownsville

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Brownsville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Brownsville (STL to BRO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Brownsville

Best Price Found

$259

Fastest flight time

4h 53m

Direct flights

None

Airports in Brownsville

1 airport
The best flight deal from St. Louis to Brownsville found on momondo in the last 72 hours is $259
The fastest flight from St. Louis to Brownsville takes 4h 53m
There are no direct flights from St. Louis to Brownsville. Popular non-direct route for this connection is Lambert-St Louis Airport - Brownsville South Padre Is. Intl Airport.
There is 1 airport near Brownsville: Brownsville South Padre Is. Intl (BRO)
Search flight deals

  • How far is Lambert-St Louis to Brownsville South Padre Is. Intl by plane?

    There are 975.7 mi between Lambert-St Louis and Brownsville South Padre Is. Intl. 4h 53m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Brownsville South Padre Is. Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Brownsville South Padre Is. Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Brownsville South Padre Is. Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Brownsville South Padre Is. Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Brownsville South Padre Is. Intl Airport.

  • What documentation or ID do you need to fly to Brownsville South Padre Is. Intl Airport?

    The travel and health documents required for your trip to Brownsville South Padre Is. Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Brownsville South Padre Is. Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from St. Louis to Brownsville?

Best airlines flying from St. Louis to Brownsville

Compare and see reviews for airlines that fly from St. Louis to Brownsville with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $258Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
American AirlinesPriceFrom $288Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Brownsville?

Book flights to Brownsville if you plan to visit one of these locations
South Padre Island

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Why should I use momondo to find a flight deal from St. Louis to Brownsville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Brownsville for you.

Can I find flights from St. Louis to Brownsville with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Brownsville flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Brownsville?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Brownsville from St. Louis.

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