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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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRO
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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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 November 2, 2025.

This American Airlines deal was found by Cheapflights users on 11/1. 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 12/133:14 pmORD - BRO
1 stop7h 45mAmerican Airlines
Tue 12/162:48 pmBRO - ORD
1 stop6h 36mAmerican Airlines
Deal found 11/1$269
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/1512:45 pmORD - BRO
1 stop7h 40mUnited Airlines
Sat 11/225:15 pmBRO - ORD
1 stop6h 00mUnited Airlines
Deal found 11/1$304
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Sat 11/153:14 pmORD - BRO
1 stop7h 50mAmerican Airlines
Wed 11/195:42 pmBRO - ORD
1 stop5h 55mAmerican Airlines
Deal found 10/31$339
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Wed 12/176:00 amORD - BRO
1 stop5h 27mUnited Airlines
Mon 12/227:15 amBRO - ORD
1 stop5h 02mUnited Airlines
Deal found 11/1$349
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/112:54 pmORD - BRO
1 stop8h 10mAmerican Airlines
Sat 11/155:42 pmBRO - ORD
1 stop5h 55mAmerican Airlines
Deal found 11/1$374
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/234:00 pmORD - BRO
1 stop7h 37mUnited Airlines
Tue 2/312:13 pmBRO - ORD
1 stop4h 53mUnited Airlines
Deal found 11/1$390
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:00 amORD - BRO
1 stop5h 28mUnited Airlines
Sun 11/235:15 pmBRO - ORD
1 stop5h 55mUnited Airlines
Deal found 10/31$414
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/138:59 amORD - BRO
2 stops10h 36mUnited Airlines
Tue 12/165:25 pmBRO - ORD
1 stop5h 31mUnited Airlines
Deal found 11/1$443
This American Airlines deal was found by Cheapflights users on 10/31. 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.
Wed 12/241:15 pmORD - BRO
1 stop5h 54mAmerican Airlines
Sat 12/273:03 pmBRO - ORD
1 stop7h 17mAmerican Airlines
Deal found 10/31$454
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/75:10 pmORD - BRO
1 stop6h 26mUnited Airlines
Tue 11/117:15 amBRO - ORD
1 stop7h 39mUnited Airlines
Deal found 10/31$489
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Mon 11/34:35 pmSTL - BRO
1 stop7h 01mUnited Airlines
Wed 11/512:15 pmBRO - STL
1 stop6h 32mUnited Airlines
Deal found 10/30$489
This United Airlines deal was found by Cheapflights users on 10/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1510:50 amMLI - BRO
2 stops9h 35mUnited Airlines
Wed 11/1912:15 pmBRO - MLI
2 stops22h 00mUnited Airlines
Deal found 10/31$628

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 November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$259
(American Airlines)

One-way from

$200
(American Airlines)

Popular in

March

Cheapest in

February

Average price

$373
Provider with most accurate pricing for Chicago (CHI)-Brownsville South Padre Is. Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Brownsville South Padre Is. Intl flights.
Search Deals
From Illinois to Brownsville South Padre Is. Intl
Search Deals
One-way flight from Illinois to Brownsville South Padre Is. Intl
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 2, 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

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Fri 1/30

7:15 am-2:48 pm

1 stop7h 33m

Brownsville South Padre Is. Intl

Fri 2/6

6:00 am-11:05 am

1 stop5h 05m

$259

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 1/17

10:35 am-4:12 pm

1 stop5h 37m

Brownsville South Padre Is. Intl

Wed 1/21

7:15 am-1:00 pm

1 stop5h 45m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 1/30

5:05 am-10:21 am

1 stop5h 16m

Brownsville South Padre Is. Intl

Mon 2/2

6:49 pm-11:44 pm

1 stop4h 55m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 11/15

12:45 pm-8:25 pm

1 stop7h 40m

Brownsville South Padre Is. Intl

Sat 11/22

5:15 pm-11:15 pm

1 stop6h 00m

$304

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 2/18

10:10 am-4:12 pm

1 stop6h 02m

Brownsville South Padre Is. Intl

Mon 2/23

5:25 pm-10:14 pm

1 stop4h 49m

$308

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 1/14

8:30 am-6:02 pm

2 stops9h 32m

Brownsville South Padre Is. Intl

Tue 1/20

5:25 pm-10:00 pm

1 stop4h 35m

$334

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 11/15

3:14 pm-11:04 pm

1 stop7h 50m

Brownsville South Padre Is. Intl

Wed 11/19

5:42 pm-11:37 pm

1 stop5h 55m

$339

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Wed 12/17

6:00 am-11:27 am

1 stop5h 27m

Brownsville South Padre Is. Intl

Tue 12/23

4:55 pm-12:14 am

1 stop7h 19m

$349

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 12/25

5:49 am-11:26 am

1 stop5h 37m

Brownsville South Padre Is. Intl

Sun 12/28

4:55 pm-12:14 am

1 stop7h 19m

$349

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Wed 12/17

6:00 am-11:27 am

1 stop5h 27m

Brownsville South Padre Is. Intl

Mon 12/22

7:15 am-12:17 pm

1 stop5h 02m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 23 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, January is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $171). Flying from Illinois to Brownsville in May is currently the most expensive (average of $258). 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.

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?

    American Airlines and United Airlines can get you from Illinois to Brownsville in just under 5h 37m. Your travel time can differ by up to 1h 56m. 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, January is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $171). Flying from Illinois to Brownsville in May is currently the most expensive (average of $258). 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$257Average$453FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$273Average$386FlexibilityNo cancel feeOn-time69%

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