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

Currently priced at $258, American Airlines will fly you from Brownsville to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $273. American Airlines is currently priced 37% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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

When flying from Brownsville to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Most accurate provider : When it comes to deals on Brownsville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Brownsville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Brownsville-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Brownsville-St. Louis 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 Brownsville-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

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

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

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

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

Find Cheap Flights from Brownsville to St. Louis

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1. Tell us where you want to go

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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.

Find flight deals from Brownsville to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	June
Cheapest in	January

Provider with most accurate pricing for Brownsville South Padre Is. Intl-Lambert-St Louis flight deals.

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Provider most trusted by Cheapflights users for Brownsville South Padre Is. Intl-Lambert-St Louis flights.

Search Deals

Highest demand for flights based on searches. 31% potential increase in price ($193 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 11% potential price decrease ($42 potential savings vs. average RT price).

Search Deals

Compare providers for flights from Brownsville to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Brownsville to St. Louis in August.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Brownsville-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Brownsville-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Brownsville-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Brownsville-St. Louis 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 Brownsville-St. Louis 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 Brownsville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Brownsville with our price prediction graph.

BRO-STL

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 St. Louis

Peruse reviews from past customers who have flown with United Airlines and American Airlines from Brownsville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

10,110 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

United Airlines

7.4

Good

10,110 reviews

United Airlines

7.4

Good

10,110 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

American Airlines

7.1

Good

11,990 reviews

United Airlines

7.4

Good

10,110 reviews

Reviews

1 / 20

8.0

Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

What are the cheapest airlines flying from Brownsville to St. Louis round-trip?
Currently priced at $258, American Airlines will fly you from Brownsville to St. Louis and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $273. American Airlines is currently priced 37% below the average price you’ll pay for this route.
Can I find deals for flights from Brownsville to St. Louis that include hotel bookings?
Yes. In addition to deals on Brownsville to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Brownsville to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Brownsville to St. Louis.
Can I find deals for business class flights from Brownsville to St. Louis?
Yes. Cheapflights offers flight deals from Brownsville to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Top 2 airlines flying from Brownsville to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$258	Average$418	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$273	Average$428	FlexibilityNo cancel fee	On-time69%

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

Find cheap flights from Brownsville to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Brownsville to St. Louis

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Compare providers for flights from Brownsville to St. Louis

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 Brownsville to St. Louis in August.

Best time to book a flight from Brownsville to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Brownsville with our price prediction graph.

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with United Airlines and American Airlines from Brownsville to St. Louis to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

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

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

Traveling to a place near St. Louis?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Brownsville to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Brownsville to St. Louis by cabin class

Find flights from Brownsville to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Brownsville and St. Louis flights

Browse other Brownsville and St. Louis flight options. Last updated on August 23, 2026.

Other flights from Brownsville

Browse through other flights departing from Brownsville. Flights are based on user searches made on Cheapflights and were last updated on August 23, 2026.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2026

Other flights to St. Louis

Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 23, 2026.

Top 2 airlines flying from Brownsville to St. Louis

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