STL - BRO

$319 Find Cheap Flights from St. Louis to Brownsville - Compare and Save

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 9/10. 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

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Everything you should know

Cheapest round-trip
$319
American Airlines
Thu 9/10Mon 9/14
STL - BRO • 1 stop
Cheapest one-way
$461
United Airlines
Sat 7/11
STL - BRO • 1 stop
Top airlines
Cheapest • from $319 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Brownsville. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $372 (round-trip)
Shortest trip • 5h 01m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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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

Thu, Sep 10 - Mon, Sep 14
American Airlines Logo
7:00 am - 2:11 pm
STL
-
BRO
7h 11m
1 stop
American Airlines Logo
6:37 pm - 11:43 pm
BRO
-
STL
5h 06m
1 stop
$319American Airlines
Sat, Aug 22 - Tue, Aug 25
United Airlines Logo
8:00 am - 6:13 pm
STL
-
BRO
10h 13m
2 stops
United Airlines Logo
12:05 pm - 6:04 pm
BRO
-
STL
5h 59m
1 stop
$324United Airlines
Sat, Aug 22 - Tue, Aug 25
United Airlines Logo
1:05 pm - 9:59 pm
STL
-
BRO
8h 54m
2 stops
United Airlines Logo
7:15 am - 3:38 pm
BRO
-
STL
8h 23m
2 stops
$329United Airlines
Fri, Jul 17 - Tue, Jul 21
American Airlines Logo
7:22 pm - 12:13 am
STL
-
BRO
4h 51m
1 stop
American Airlines Logo
6:42 pm - 11:58 pm
BRO
-
STL
5h 16m
1 stop
$369American Airlines
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
8:00 am - 6:13 pm
STL
-
BRO
10h 13m
2 stops
United Airlines Logo
9:10 am - 2:10 pm
BRO
-
STL
5h 00m
1 stop
$386United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
3:13 pm - 9:59 pm
STL
-
BRO
6h 46m
1 stop
United Airlines Logo
9:20 am - 10:00 pm
BRO
-
STL
12h 40m
2 stops
$404United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
1:05 pm - 9:59 pm
STL
-
BRO
8h 54m
2 stops
United Airlines Logo
12:05 pm - 10:59 pm
BRO
-
STL
10h 54m
2 stops
$409United Airlines
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
8:00 am - 6:13 pm
STL
-
BRO
10h 13m
2 stops
United Airlines Logo
4:38 pm - 10:30 pm
BRO
-
STL
5h 52m
1 stop
$474United Airlines
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
7:00 am - 6:13 pm
STL
-
BRO
11h 13m
2 stops
United Airlines Logo
9:20 am - 11:38 pm
BRO
-
STL
14h 18m
2 stops
$479United Airlines
Sat, Aug 22 - Wed, Aug 26
United Airlines Logo
3:13 pm - 9:59 pm
STL
-
BRO
6h 46m
1 stop
United Airlines Logo
7:15 am - 2:13 pm
BRO
-
STL
6h 58m
1 stop
$528United 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 August, where tickets cost $0 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $684 and $636 respectively.

Good to know

Low seasonFebruary
Cheapest flight$319
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly with an average 1% 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 5 days, the lowest price for a flight from St. Louis to Brownsville was $461 for a one-way ticket and $319 for a round-trip.

  • 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 $366 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 $510 and an overall rating of 7.1.

  • 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 9927 reviews
7.7Boarding
8.1Crew
6.7Food
7.3Comfort
7.1Entertainment
Airline reviews

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

4.0 OkayPrincess, Jun 2026
LAX - IAH
Read more United Airlines reviews

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

This planes staff was top tier. Everything went great and had a great flight home.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

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.

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.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Trip was smooth bumpy from the wind but no issues at all the crew attendant was very pleasant and had great customer service

Flight was canceled 12 hours before take-off due to “weather”

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

American delayed the flight for a crew rest period. The delay occurred late in the evening - the earliest i can find is 10:20 pm. With a 6 am flight anyone on the flight would have already have been asleep (unless you are insane, a vampire or on drugs) and at least for me i was already on the way to the airport at 445 am the next morning when i discovered they delayed the flight until 9 am. Given the incoming flight was in the air at 6 pm the evening before this should have been figured out a lot more timely that was there only crew to use. Just frustrating given there is no consideration for customer experience anymore in flying.

Good crew and flight was on time. It’s a small plane with limited overhead luggage space. They said the overhead space was full and I had to check my bag. There was still space when I got on. Waiting for my checked luggage added 30 minutes to my trip. Not the end of the world but also not great.

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

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

Qatar airways ,boarding arrangements at Hamid international airport could been better

Two flight changes before the scheduled flight. On the day of the flight, the flight was delayed, which caused the connecting flight to be missed. Then, I was directed to another airport (CUN) and traveled to Tulum. American gave a $12 voucher for lunch. The least expensive item on the menu at a Mexican restaurant was $9.99. Driving to Tulum was a bad auto crash, and traffic was delayed two-plus hours. The bottom line is that we should have been at the hotel at noon, but it ended up at 11:30 PM.

Miami lounges were overcrowded and we were unable to get in. We only had a short time. But the banks are too tight in all American hubs

Overall boarding and debarking is a joke. I dont even bring luggage anymore on trips because you can never allow them to be place then in the overhead bin or you have to pay or you check them which is even worse having to wait for your luggage on the tarmac.

First time flying internationally with AA and probably my last. Not military friendly at all. Didn't allow free checked bag for military family members (dependents) on orders like other airlines. We were charged $100 for baggage weight overage (5 lbs!)even though we had military orders allowing us extra.. Didn’t allow military members to board early. Inefficient and long wait time to board. Seats are smaller and more uncomfortable than other airlines.. no drink service for over 7 hrs of flight! After initial meal was served, the crew never offered a snack or drinks until the breakfast's was served 1 1/2 hrs before landing. Overall expensive and poor experience for the entire flight.

Boarding process was good. I was assigned the most rear (non-reclining) seat in both directions, which wasn't great.

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

Information on your arrival and departure airports