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$168+ Cheap flights from Brownsville (BRO) to Illinois

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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
BRO — ORD
Mar 5 — Mar 121
Thu 3/5
Thu 3/12
1 adult, Economy
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Cheap flight deals from Brownsville to Illinois

Cheapest flights from Brownsville to Illinois
Explore the most affordable flight options available from Brownsville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 3, 2026.

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.
Mon 8/245:25 pm
BRO
-
ORD
1 stop5h 11m
United Airlines
Sat 8/294:05 pm
ORD
-
BRO
1 stop6h 58m
United 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.
Wed 7/85:25 pm
BRO
-
ORD
1 stop5h 50m
United Airlines
Sun 7/126:30 am
ORD
-
BRO
1 stop4h 52m
United Airlines
Deal found 2/2$309
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 3/46:44 pm
BRO
-
ORD
1 stop4h 52m
American Airlines
Thu 3/55:00 am
ORD
-
BRO
1 stop5h 17m
American Airlines
Deal found 2/2$329
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 5/27:20 am
BRO
-
ORD
1 stop5h 17m
United Airlines
Tue 5/510:30 am
ORD
-
BRO
1 stop5h 54m
United Airlines
Deal found 2/2$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 5/27:20 am
BRO
-
ORD
1 stop5h 17m
United Airlines
Thu 5/75:30 am
ORD
-
BRO
1 stop5h 57m
United Airlines
Deal found 2/2$389
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.
Tue 3/36:44 pm
BRO
-
ORD
1 stop4h 52m
American Airlines
Thu 3/55:00 am
ORD
-
BRO
1 stop5h 17m
American Airlines
Deal found 2/2$409
This United Airlines deal was found by Cheapflights users on 1/31. 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.
Tue 2/2412:15 pm
BRO
-
ORD
1 stop7h 38m
United Airlines
Sat 2/285:45 am
ORD
-
BRO
1 stop5h 51m
United Airlines
Deal found 1/31$424
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 2/165:14 pm
BRO
-
ORD
1 stop7h 12m
United Airlines
Fri 2/202:00 pm
ORD
-
BRO
1 stop7h 31m
United Airlines
Deal found 2/1$425
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 3/75:25 pm
BRO
-
ORD
1 stop5h 43m
United Airlines
Sun 3/87:35 am
ORD
-
BRO
1 stop11h 15m
United Airlines
Deal found 2/2$432
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 5/59:25 am
BRO
-
ORD
2 stops11h 08m
United Airlines
Wed 5/64:00 pm
ORD
-
BRO
1 stop5h 59m
United Airlines
Deal found 2/2$433
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.
Mon 3/235:15 am
BRO
-
ORD
2 stops10h 42m
United Airlines
Wed 3/254:00 pm
ORD
-
BRO
1 stop5h 31m
United Airlines
Deal found 2/2$439

Find flight deals from Brownsville to Illinois

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

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(United Airlines)

One-way from

$168
(American Airlines)

Popular in

December

Cheapest in

July

Average price

$348
Provider with most accurate pricing for Brownsville South Padre Is. Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Brownsville South Padre Is. Intl-Chicago (CHI) flights.
Search Deals
From Brownsville South Padre Is. Intl to Illinois
Search Deals
One-way flight from Brownsville South Padre Is. Intl to Illinois
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($68 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 Brownsville to Illinois 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 Brownsville to Illinois that are best for you.

Fly from

Brownsville

Fly to

Illinois

Route

Depart

Return

Price

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Sat 5/2

7:20 am-12:37 pm

1 stop5h 17m

Chicago O'Hare Intl

Tue 5/5

10:30 am-4:24 pm

1 stop5h 54m

$369

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Sat 5/2

12:05 pm-7:55 pm

1 stop7h 50m

Chicago O'Hare Intl

Sat 5/9

12:40 pm-6:28 pm

1 stop5h 48m

$369

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Thu 5/7

5:17 pm-12:45 am

1 stop7h 28m

Chicago O'Hare Intl

Sat 5/9

4:00 pm-9:59 pm

1 stop5h 59m

$369

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Mon 5/4

5:17 pm-12:45 am

1 stop7h 28m

Chicago O'Hare Intl

Sat 5/9

10:30 am-6:28 pm

1 stop7h 58m

$369

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Sat 5/2

7:20 am-12:37 pm

1 stop5h 17m

Chicago O'Hare Intl

Thu 5/7

5:30 am-11:27 am

1 stop5h 57m

$389

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Wed 3/4

6:44 pm-11:36 pm

1 stop4h 52m

Chicago O'Hare Intl

Sun 3/8

6:10 am-2:27 pm

1 stop8h 17m

$409

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Tue 5/5

5:17 pm-11:15 pm

1 stop5h 58m

Chicago O'Hare Intl

Thu 5/7

5:30 am-11:27 am

1 stop5h 57m

$409

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Mon 5/4

5:17 pm-1:27 am

1 stop8h 10m

Chicago O'Hare Intl

Tue 5/5

12:40 pm-6:28 pm

1 stop5h 48m

$409

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Mon 5/4

5:17 pm-11:15 pm

1 stop5h 58m

Chicago O'Hare Intl

Wed 5/6

2:10 pm-9:59 pm

1 stop7h 49m

$409

BrownsvilleChicago

BRO - ORD

BROORD

Brownsville South Padre Is. Intl

Wed 5/6

5:17 pm-12:45 am

1 stop7h 28m

Chicago O'Hare Intl

Thu 5/7

5:30 am-11:27 am

1 stop5h 57m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/1

Showing 1-10 of 16 results
1
2

Best time to book a flight from Brownsville to Illinois

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

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

Currently, December is the cheapest month in which you can book a flight from Brownsville to Illinois (average of $136). Flying from Brownsville to Illinois in February is currently the most expensive (average of $328). 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 Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated February 3, 2026.
Read through reviews of airlines operating flights from Brownsville to Illinois, such as United Airlines and American Airlines. 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
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,236 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,216 reviews
United Airlines
7.4
Good
9,236 reviews

Crew

8.1

Comfort

7.3

Overall

7.4

Boarding

7.7

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

Related info for your journey

Find useful and relevant information for your journey from Brownsville to Illinois. 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 from for flights from Brownsville to Illinois?

    For a flight from Brownsville to Illinois, you will be flying from 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 Brownsville to Illinois?

    Airlines like United Airlines fly from Brownsville to Illinois in about 5h 17m. The time it takes to get you to your destination can typically vary by up to . There are 1235 mi between Brownsville and Illinois.

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

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

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

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

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

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

    Currently, December is the cheapest month in which you can book a flight from Brownsville to Illinois (average of $136). Flying from Brownsville to Illinois in February is currently the most expensive (average of $328). 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 Brownsville to Illinois

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Top 2 airlines flying from Brownsville to Illinois

Discover the top 2 airlines that operate flights from Brownsville to Illinois. 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$383FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$328Average$403FlexibilityNo cancel feeOn-time69%

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