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$165+ Cheap flights from Illinois to Brownsville (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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRO
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap flight deals from Illinois to Brownsville

Keep the following information in mind while searching for Illinois to Brownsville flight deals. Data was last updated julio 31, 2025.

Round-trip from

$259
(American Airlines)

One-way from

$165
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$372
From Illinois to Brownsville South Padre Is. Intl
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One-way flight from Illinois to Brownsville South Padre Is. Intl
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Highest demand for flights based on searches. 4% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Illinois to Brownsville

Cheapest flights from Illinois to Brownsville
Explore the most affordable flight options available from Illinois to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/31. 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.
mar. 9/25:30 pmSTL - BRO
1 stop5h 29mAmerican Airlines
mar. 9/96:39 pmBRO - STL
1 stop4h 11mAmerican Airlines
Deal found 7/31$259
This American Airlines deal was found by Cheapflights users on 7/28. 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.
jue. 9/118:25 amORD - BRO
1 stop5h 59mAmerican Airlines
jue. 9/186:57 pmBRO - ORD
1 stop4h 55mAmerican Airlines
Deal found 7/28$269
This United Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 11/276:00 amORD - BRO
1 stop5h 28mUnited Airlines
lun. 12/15:15 pmBRO - ORD
1 stop7h 00mUnited Airlines
Deal found 7/30$285
This United Airlines deal was found by Cheapflights users on 7/30. 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.
mar. 9/26:15 amSTL - BRO
1 stop5h 06mUnited Airlines
mar. 9/99:45 amBRO - STL
2 stops13h 59mUnited Airlines
Deal found 7/30$334
This American Airlines deal was found by Cheapflights users on 7/29. 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.
sáb. 8/2310:42 amMLI - BRO
1 stop7h 25mAmerican Airlines
mar. 8/265:37 amBRO - MLI
1 stop4h 35mAmerican Airlines
Deal found 7/29$339
This United Airlines deal was found by Cheapflights users on 7/30. 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.
sáb. 8/236:30 amMLI - BRO
2 stops9h 33mUnited Airlines
mar. 8/267:20 amBRO - MLI
2 stops7h 45mUnited Airlines
Deal found 7/30$349

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois 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 julio 31, 2025.
Use the filters below to find and compare flights from Illinois to Brownsville that are best for you.

Fly from

Illinois

Fly to

Brownsville

Route

Depart

Return

Price

MolineBrownsville

MLI - BRO

MLIBRO

Moline Quad-City

lun. 11/17

11:10 am-5:12 pm

1 stop6h 02m

Brownsville South Padre Is. Intl

dom. 11/23

6:11 pm-10:45 pm

1 stop4h 34m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

mar. 9/2

5:30 pm-10:59 pm

1 stop5h 29m

Brownsville South Padre Is. Intl

mar. 9/9

6:39 pm-10:50 pm

1 stop4h 11m

$259

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

jue. 9/11

8:25 am-2:24 pm

1 stop5h 59m

Brownsville South Padre Is. Intl

jue. 9/18

6:57 pm-11:52 pm

1 stop4h 55m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

mié. 8/13

9:46 am-4:05 pm

1 stop6h 19m

Brownsville South Padre Is. Intl

dom. 8/17

5:10 am-10:21 am

1 stop5h 11m

$319

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

mar. 9/2

6:15 am-11:21 am

1 stop5h 06m

Brownsville South Padre Is. Intl

mar. 9/9

9:45 am-11:44 pm

2 stops13h 59m

$334

MolineBrownsville

MLI - BRO

MLIBRO

Moline Quad-City

sáb. 8/23

6:30 am-4:03 pm

2 stops9h 33m

Brownsville South Padre Is. Intl

mar. 8/26

9:45 am-7:27 pm

2 stops9h 42m

$400

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

sáb. 9/6

8:25 am-2:34 pm

1 stop6h 09m

$165

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

sáb. 9/6

12:45 pm-11:34 pm

2 stops10h 49m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Illinois to Brownsville

Have a flexible travel schedule? Discover the best time to fly to Brownsville from Illinois 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 Illinois to Brownsville

What is the cheapest month to book a flight from Illinois to Brownsville?

Currently, August is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $328). Flying from Illinois 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.

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 julio 31, 2025.
Get a feel of what it's like to fly with United Airlines and American Airlines from Illinois to Brownsville by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

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
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

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
8,900 reviews

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

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 Illinois to Brownsville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Brownsville from Illinois?

    For a flight from Illinois to Brownsville, you will be flying into South Padre Is. Intl. Brownsville South Padre Is. Intl (BRO) is just 4.5 mi from the center of the city.

  • What are the most popular routes from Illinois to Brownsville?

    When deciding which route to take from Illinois to Brownsville consider Chicago O'Hare Intl - Brownsville South Padre Is. Intl, Lambert-St Louis - Brownsville South Padre Is. Intl or Moline Quad-City - Brownsville South Padre Is. Intl as they are the most popular.

  • Can I find deals for flights from Illinois to Brownsville that include hotel bookings?

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

  • How can I find direct flights from Illinois to Brownsville?

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

  • Can I find deals for business class flights from Illinois to Brownsville?

    Yes. Cheapflights offers flight deals from Illinois 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 Illinois to Brownsville?

    Currently, August is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $328). Flying from Illinois 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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Alternative routes for Illinois to Brownsville

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Top 2 airlines flying from Illinois to Brownsville

Discover the top 2 airlines that operate flights from Illinois 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$258Average$492FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$273Average$408FlexibilityNo cancel feeOn-time69%

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