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$161+ 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 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRO
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$269
(United Airlines)

One-way from

$161
(American Airlines)

Popular in

March

Cheapest in

February

Average price

$378
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. 7% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/114:17 pmORD - BRO
1 stop6h 38mAmerican Airlines
Wed 10/226:38 pmBRO - ORD
1 stop5h 04mAmerican Airlines
Deal found 9/14$269
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/307:16 amSTL - BRO
1 stop7h 18mAmerican Airlines
Sat 10/46:39 pmBRO - STL
1 stop4h 11mAmerican Airlines
Deal found 9/15$289
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/304:12 pmORD - BRO
1 stop6h 35mAmerican Airlines
Sat 10/43:04 pmBRO - ORD
1 stop6h 41mAmerican Airlines
Deal found 9/15$319
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Thu 10/162:20 pmORD - BRO
1 stop5h 16mUnited Airlines
Mon 10/205:15 pmBRO - ORD
1 stop6h 59mUnited Airlines
Deal found 9/14$320
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Fri 10/34:12 pmORD - BRO
1 stop6h 35mAmerican Airlines
Sun 10/56:57 pmBRO - ORD
1 stop4h 55mAmerican Airlines
Deal found 9/15$349
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 10/95:50 pmORD - BRO
1 stop5h 43mUnited Airlines
Mon 10/135:15 pmBRO - ORD
1 stop6h 59mUnited Airlines
Deal found 9/15$374
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/113:58 pmORD - BRO
1 stop5h 21mUnited Airlines
Wed 10/225:15 pmBRO - ORD
2 stops14h 46mUnited Airlines
Deal found 9/14$377
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 9/1710:03 amORD - BRO
1 stop8h 06mAmerican Airlines
Tue 9/233:04 pmBRO - ORD
1 stop4h 57mAmerican Airlines
Deal found 9/14$409
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 9/272:20 pmORD - BRO
1 stop6h 59mUnited Airlines
Tue 9/3012:10 pmBRO - ORD
1 stop4h 59mUnited Airlines
Deal found 9/14$429
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Sat 11/225:10 pmORD - BRO
1 stop6h 26mUnited Airlines
Sat 11/299:30 pmBRO - ORD
1 stop4h 57mUnited Airlines
Deal found 9/15$454
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 9/3010:35 amORD - BRO
1 stop5h 25mUnited Airlines
Sat 10/47:15 amBRO - ORD
2 stops11h 31mUnited Airlines
Deal found 9/15$474
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Mon 10/139:25 pmORD - BRO
2 stops13h 55mUnited Airlines
Sat 10/185:15 pmBRO - ORD
1 stop5h 22mUnited Airlines
Deal found 9/15$482

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 September 15, 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

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 1/30

3:53 pm-9:31 pm

1 stop5h 38m

Brownsville South Padre Is. Intl

Sat 2/7

5:25 pm-10:58 pm

1 stop5h 33m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 10/11

4:17 pm-10:55 pm

1 stop6h 38m

Brownsville South Padre Is. Intl

Wed 10/22

6:38 pm-11:42 pm

1 stop5h 04m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 1/29

12:45 pm-6:02 pm

1 stop5h 17m

Brownsville South Padre Is. Intl

Sun 2/1

5:25 pm-12:28 am

1 stop7h 03m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 1/30

4:45 pm-10:23 pm

1 stop5h 38m

Brownsville South Padre Is. Intl

Mon 2/2

6:02 pm-11:51 pm

1 stop5h 49m

$269

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 9/30

7:16 am-2:34 pm

1 stop7h 18m

Brownsville South Padre Is. Intl

Sat 10/4

6:39 pm-10:50 pm

1 stop4h 11m

$289

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Tue 9/30

4:12 pm-10:47 pm

1 stop6h 35m

Brownsville South Padre Is. Intl

Sat 10/4

3:04 pm-9:45 pm

1 stop6h 41m

$319

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 10/16

2:20 pm-7:36 pm

1 stop5h 16m

Brownsville South Padre Is. Intl

Mon 10/20

5:15 pm-12:14 am

1 stop6h 59m

$320

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 10/3

4:12 pm-10:47 pm

1 stop6h 35m

Brownsville South Padre Is. Intl

Sun 10/5

6:57 pm-11:52 pm

1 stop4h 55m

$349

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 10/9

4:50 pm-11:33 pm

1 stop6h 43m

Brownsville South Padre Is. Intl

Sun 10/12

5:15 pm-12:14 am

1 stop6h 59m

$374

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 10/9

5:50 pm-11:33 pm

1 stop5h 43m

Brownsville South Padre Is. Intl

Mon 10/13

5:15 pm-12:14 am

1 stop6h 59m

$374

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 34 results
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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.

How much does it cost to fly round-trip from Illinois to Brownsville?

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.

  • How long is the flight from Illinois to Brownsville?

    United Airlines and American Airlines can get you from Illinois to Brownsville in just under 5h 38m. Your travel time can differ by up to 1h. Airlines will cover a distance of 1235 mi. This flight may include one or multiple stops.

  • 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$493FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$273Average$408FlexibilityNo cancel feeOn-time69%

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