STL - BRO

$309 Find Cheap Flights from St. Louis to Brownsville

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Brownsville departing on 2/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Brownsville

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Brownsville, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Brownsville, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$309
Overall average: $288
American Airlines
Fri 2/20Tue 2/24
STL - BRO • 1 stop
Cheapest one-way
Multiple Airlines
Fri 2/6
STL - BRO • multi-stop
Top airlines
American Airlines
Cheapest • from $309 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 31% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Brownsville!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Brownsville (STL-BRO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Brownsville that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Brownsville

Fri, Feb 20 - Tue, Feb 24
American Airlines Logo
5:12 am - 10:17 am
STL
-
BRO
5h 05m
1 stop
American Airlines Logo
2:58 pm - 7:29 pm
BRO
-
STL
4h 31m
1 stop
$309American Airlines
Fri, Feb 20 - Tue, Feb 24
American Airlines Logo
5:12 am - 10:17 am
STL
-
BRO
5h 05m
1 stop
American Airlines Logo
2:58 pm - 11:48 pm
BRO
-
STL
8h 50m
2 stops
$314American Airlines
Fri, Jun 19 - Sat, Jun 27
American Airlines Logo
5:45 am - 10:14 am
STL
-
BRO
4h 29m
1 stop
American Airlines Logo
6:41 pm - 11:44 pm
BRO
-
STL
5h 03m
1 stop
$399American Airlines
Sun, Mar 1 - Sun, Mar 8
United Airlines Logo
6:00 am - 11:36 am
STL
-
BRO
5h 36m
1 stop
United Airlines Logo
5:15 am - 9:21 am
BRO
-
STL
4h 06m
1 stop
$437United Airlines
Tue, Mar 17 - Sun, Mar 22
United Airlines Logo
7:40 am - 6:50 pm
STL
-
BRO
11h 10m
2 stops
United Airlines Logo
5:15 am - 9:21 am
BRO
-
STL
4h 06m
1 stop
$439United Airlines
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
6:00 am - 11:34 am
STL
-
BRO
5h 34m
1 stop
United Airlines Logo
5:15 am - 2:42 pm
BRO
-
STL
9h 27m
2 stops
$454United Airlines
Tue, Mar 17 - Sun, Mar 22
United Airlines Logo
6:00 am - 11:34 am
STL
-
BRO
5h 34m
1 stop
United Airlines Logo
5:15 am - 9:21 am
BRO
-
STL
4h 06m
1 stop
$455United Airlines
Thu, Mar 5 - Thu, Mar 12
United Airlines Logo
7:41 am - 6:58 pm
STL
-
BRO
11h 17m
2 stops
United Airlines Logo
5:15 am - 2:42 pm
BRO
-
STL
9h 27m
2 stops
$475United Airlines
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
7:41 am - 6:02 pm
STL
-
BRO
10h 21m
2 stops
United Airlines Logo
12:15 pm - 11:59 pm
BRO
-
STL
11h 44m
2 stops
$479United Airlines
Sun, Mar 1 - Fri, Mar 6
American Airlines Logo
7:00 am - 2:27 pm
STL
-
BRO
7h 27m
1 stop
American Airlines Logo
8:04 pm - 10:13 am
BRO
-
STL
14h 09m
2 stops
$483American Airlines
Booking Insights

KAYAK's insights & trends for St. Louis to Brownsville flights

Get data-powered insights and trends into flights from St. Louis to Brownsville to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Brownsville?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Brownsville, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Brownsville is November, where tickets cost $266 (return) on average. On the other hand, the most expensive months are December and July, where the average cost of round-trip tickets is $597 and $461 respectively.

Good to know

Low seasonAugust
Cheapest flight$309
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from St. Louis to Brownsville

When to book flights from St. Louis to Brownsville

Are your dates flexible? Find out the best times to travel from St. Louis to Brownsville based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Brownsville

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

    In the last 3 days, the lowest price for a flight from St. Louis to Brownsville was $309 for a round-trip ticket.

  • Do I need a passport to fly between St. Louis and Brownsville?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from St. Louis to Brownsville?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Brownsville, also known as Brownsville South Padre Is. Intl.

  • Which aircraft models fly most regularly from St. Louis to Brownsville?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Brownsville?

    Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Brownsville, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Brownsville, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Brownsville are United Airlines and American Airlines. With an average price for the route of $335 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $476 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from St. Louis to Brownsville?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Brownsville.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Brownsville?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Brownsville from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Brownsville?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Brownsville with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BRO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Brownsville?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Brownsville from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from St. Louis to Brownsville

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Brownsville. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Brownsville? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9244 reviews
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
Airline reviews

Everything except the food and entertainment. It was a great experience though

10.0 ExcellentAnonymous, Feb 2026
LGA - IAH
Read more United Airlines reviews

Everything except the food and entertainment. It was a great experience though

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Delayed, toilets did not flush, pilot parked to far away from Gate

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

Even though we were delayed, we were able to make our connection

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

I am very appreciative of the help provided to me by Dennis and Whitney. I had lost my phone at EWR airport and they were very kind in assisting me. This included advice on how to file a report and also helping me connect with family. The pilot was also great about keeping passengers updated on the flight progress with regular communications over the system.

The screens were inoperable for movies and such, but everything else was just fine

Crew was helpful and cheerful especially when they had no refreshments to work with. The plane was never serviced and had nothing but limited water and coffee onboard. For the price point, a concern of services.

AA did not allow to board a flight because my connecting flight from DFW had been canceled. I got on another flight to another city. No service on the plane and I did not use their entertainment system.

2 hour delay due to equipment failure. No updates via the app and airport screens (which continued to show a departure time in the past). AA eventually switched planes and the new plane was not catered or cleaned correctly.

I booked an aisle seat and was given a middle. At 6'4" 230lbs, it is not ideal to fly in the middle row for myself and passengers.

Trip delayed for 2 hours because of rain. We boarded and have to get down the flight and reboard again.

The aircraft had several problems - from excess fuel to non operational ac. Two hours of delay in Chicago could have been avoided with proper planning and aircraft maintenance.

No enough space plus only allowing one laggage instead of two like other airlines.

They made me pay $40 to check a bag that was listed as free when I bought my ticket. Then before boarding they offered to check any bags free.

Everything you need to know for your flight from St. Louis to Brownsville

Information on your arrival and departure airports