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Brownsville

$160+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BRO
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap 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 February 3, 2026.

This American Airlines deal was found by Cheapflights users on 2/2. 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 2/275:00 am
ORD
-
BRO
1 stop5h 17m
American Airlines
Tue 3/36:44 pm
BRO
-
ORD
1 stop4h 52m
American Airlines
Deal found 2/2$289
This United Airlines deal was found by Cheapflights users on 2/2. 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 4/305:30 am
ORD
-
BRO
1 stop5h 57m
United Airlines
Thu 5/75:17 pm
BRO
-
ORD
1 stop7h 28m
United Airlines
Deal found 2/2$301
This American Airlines deal was found by Cheapflights users on 2/1. 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.
Fri 2/205:00 am
ORD
-
BRO
1 stop5h 17m
American Airlines
Fri 3/68:04 pm
BRO
-
ORD
1 stop4h 51m
American Airlines
Deal found 2/1$314
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Mon 3/24:00 pm
ORD
-
BRO
1 stop5h 31m
United Airlines
Sat 3/75:25 pm
BRO
-
ORD
1 stop5h 43m
United Airlines
Deal found 2/1$328
This United Airlines deal was found by Cheapflights users on 2/1. 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.
Thu 3/262:10 pm
ORD
-
BRO
1 stop6h 17m
United Airlines
Mon 3/305:25 pm
BRO
-
ORD
1 stop5h 50m
United Airlines
Deal found 2/1$329
This American Airlines deal was found by Cheapflights users on 2/2. 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 2/185:00 am
ORD
-
BRO
1 stop5h 17m
American Airlines
Sat 2/212:58 pm
BRO
-
ORD
1 stop7h 02m
American Airlines
Deal found 2/2$339
This American Airlines deal was found by Cheapflights users on 2/1. 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.
Sun 4/198:10 am
ORD
-
BRO
1 stop6h 10m
American Airlines
Sat 4/252:50 pm
BRO
-
ORD
1 stop7h 55m
American Airlines
Deal found 2/1$349
This United Airlines deal was found by Cheapflights users on 2/2. 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 10/2711:00 am
STL
-
BRO
1 stop4h 38m
United Airlines
Sat 10/3112:07 pm
BRO
-
STL
1 stop4h 28m
United Airlines
Deal found 2/2$349
This United Airlines deal was found by Cheapflights users on 2/2. 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 4/710:09 am
STL
-
BRO
1 stop6h 15m
United Airlines
Sat 4/115:25 pm
BRO
-
STL
1 stop5h 03m
United Airlines
Deal found 2/2$364
This United Airlines deal was found by Cheapflights users on 2/2. 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 9/106:15 am
STL
-
BRO
1 stop5h 07m
United Airlines
Mon 9/145:25 pm
BRO
-
STL
1 stop4h 41m
United Airlines
Deal found 2/2$366
This United Airlines deal was found by Cheapflights users on 2/1. 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 2/285:45 am
ORD
-
BRO
1 stop5h 51m
United Airlines
Wed 3/45:14 pm
BRO
-
ORD
1 stop6h 45m
United Airlines
Deal found 2/1$369
This United Airlines deal was found by Cheapflights users on 2/2. 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 2/1412:45 pm
ORD
-
BRO
1 stop5h 17m
United Airlines
Sat 2/215:14 pm
BRO
-
ORD
1 stop7h 12m
United Airlines
Deal found 2/2$374

Find flight deals from Illinois to Brownsville

Keep the following information in mind while searching for Illinois to Brownsville flight deals. Data was last updated February 3, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(American Airlines)

One-way from

$160
(American Airlines)

Popular in

December

Cheapest in

January

Average price

$358
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. 6% potential increase in price ($26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 3, 2026.
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

Tue 4/7

10:09 am-4:24 pm

1 stop6h 15m

Brownsville South Padre Is. Intl

Sat 4/11

5:25 pm-10:28 pm

1 stop5h 03m

$364

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 2/27

5:00 am-10:17 am

1 stop5h 17m

Brownsville South Padre Is. Intl

Mon 3/2

6:44 pm-11:36 pm

1 stop4h 52m

$369

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 2/28

5:45 am-11:36 am

1 stop5h 51m

Brownsville South Padre Is. Intl

Wed 3/4

5:14 pm-11:59 pm

1 stop6h 45m

$369

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 2/16

6:00 am-6:14 pm

2 stops12h 14m

Brownsville South Padre Is. Intl

Fri 2/20

10:47 am-5:13 pm

1 stop6h 26m

$374

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 3/4

5:12 am-10:17 am

1 stop5h 05m

Brownsville South Padre Is. Intl

Sat 3/14

10:47 am-5:13 pm

1 stop6h 26m

$385

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Tue 3/17

2:10 pm-9:31 pm

1 stop7h 21m

Brownsville South Padre Is. Intl

Wed 3/18

5:15 am-12:48 pm

1 stop7h 33m

$409

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Sat 3/7

4:00 pm-9:31 pm

1 stop5h 31m

Brownsville South Padre Is. Intl

Sat 3/14

5:25 pm-11:08 pm

1 stop5h 43m

$424

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 3/27

8:10 pm-6:50 pm

2 stops22h 40m

Brownsville South Padre Is. Intl

Wed 4/8

5:25 pm-11:15 pm

1 stop5h 50m

$429

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 2/11

9:57 am-9:31 pm

2 stops11h 34m

Brownsville South Padre Is. Intl

Sun 2/15

5:14 pm-10:14 pm

1 stop5h 00m

$434

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sun 3/1

6:00 am-11:36 am

1 stop5h 36m

Brownsville South Padre Is. Intl

Sun 3/8

5:15 am-9:21 am

1 stop4h 06m

$437

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

Showing 1-10 of 38 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, November is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $185). Flying from Illinois to Brownsville in December is currently the most expensive (average of $277). 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?

    United Airlines and American Airlines can get you from Illinois to Brownsville in just under 5h 17m. Your travel time can differ by up to 58m. 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, November is the cheapest month in which you can book a flight from Illinois to Brownsville (average of $185). Flying from Illinois to Brownsville in December is currently the most expensive (average of $277). 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

Browse thousands of different options on Cheapflights for your next trip

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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 February 3, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$268Average$458FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$273Average$348FlexibilityNo cancel feeOn-time69%

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