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Cheap flights from Illinois to Brownsville from $308

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Brownsville departing on 7/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to Brownsville

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:00 am - 2:11 pm
STL
-
BRO
7h 11m
1 stop
American Airlines Logo
6:37 pm - 11:43 pm
BRO
-
STL
5h 06m
1 stop
$319American Airlines
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
8:00 am - 6:13 pm
STL
-
BRO
10h 13m
2 stops
United Airlines Logo
12:05 pm - 6:04 pm
BRO
-
STL
5h 59m
1 stop
$324United Airlines
Sat, Aug 22 - Tue, Aug 25
American Airlines Logo
1:46 pm - 6:49 pm
ORD
-
BRO
5h 03m
1 stop
American Airlines Logo
2:48 pm - 10:00 pm
BRO
-
ORD
7h 12m
1 stop
$329American Airlines
Fri, Dec 4 - Mon, Dec 7
United Airlines Logo
1:05 pm - 9:59 pm
STL
-
BRO
8h 54m
2 stops
United Airlines Logo
7:15 am - 3:38 pm
BRO
-
STL
8h 23m
2 stops
$329United Airlines
Sat, Aug 22 - Tue, Aug 25
American Airlines Logo
10:45 am - 6:07 pm
ORD
-
BRO
7h 22m
1 stop
American Airlines Logo
6:37 pm - 12:18 am
BRO
-
ORD
5h 41m
1 stop
$330American Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
9:57 pm - 7:55 am
ORD
-
BRO
33h 58m
2 stops
Multiple Airlines Logo
8:35 am - 11:10 pm
BRO
-
ORD
14h 35m
1 stop
$366Multiple Airlines
Wed, Aug 5 - Mon, Aug 10
American Airlines Logo
7:22 pm - 12:13 am
STL
-
BRO
4h 51m
1 stop
American Airlines Logo
6:42 pm - 11:58 pm
BRO
-
STL
5h 16m
1 stop
$369American Airlines
Fri, Jul 17 - Tue, Jul 21
United Airlines Logo
4:00 pm - 9:51 pm
ORD
-
BRO
5h 51m
1 stop
United Airlines Logo
5:25 pm - 12:15 am
BRO
-
ORD
6h 50m
1 stop
$385United Airlines
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
8:00 am - 6:13 pm
STL
-
BRO
10h 13m
2 stops
United Airlines Logo
9:10 am - 2:10 pm
BRO
-
STL
5h 00m
1 stop
$386United Airlines
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
5:30 am - 11:26 am
ORD
-
BRO
5h 56m
1 stop
United Airlines Logo
4:44 pm - 12:45 am
BRO
-
ORD
8h 01m
1 stop
$399United Airlines
Tue, Jul 14 - Sat, Jul 18

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American Airlines flights from Illinois to Brownsville

Our best American Airlines deals on Illinois to Brownsville flight tickets
American Airlines
Sep 10
STL7:00 amLambert-St Louis
7h 11m
1 stop
BRO2:11 pmBrownsville South Padre Is. Intl
Sep 14
BRO6:37 pmBrownsville South Padre Is. Intl
5h 06m
1 stop
STL11:43 pmLambert-St Louis
$319
American Airlines
Dec 4
ORD1:46 pmChicago O'Hare Intl
5h 03m
1 stop
BRO6:49 pmBrownsville South Padre Is. Intl
Dec 7
BRO2:48 pmBrownsville South Padre Is. Intl
7h 12m
1 stop
ORD10:00 pmChicago O'Hare Intl
$329
American Airlines
Aug 14
ORD10:45 amChicago O'Hare Intl
7h 22m
1 stop
BRO6:07 pmBrownsville South Padre Is. Intl
Aug 21
BRO6:37 pmBrownsville South Padre Is. Intl
5h 41m
1 stop
ORD12:18 amChicago O'Hare Intl
$330

United Airlines flights from Illinois to Brownsville

Our best United Airlines deals on Illinois to Brownsville flight tickets
United Airlines
Aug 22
STL8:00 amLambert-St Louis
10h 13m
2 stops
BRO6:13 pmBrownsville South Padre Is. Intl
Aug 25
BRO12:05 pmBrownsville South Padre Is. Intl
5h 59m
1 stop
STL6:04 pmLambert-St Louis
$324
United Airlines
Aug 22
STL1:05 pmLambert-St Louis
8h 54m
2 stops
BRO9:59 pmBrownsville South Padre Is. Intl
Aug 25
BRO7:15 amBrownsville South Padre Is. Intl
8h 23m
2 stops
STL3:38 pmLambert-St Louis
$329
United Airlines
Nov 26
ORD4:00 pmChicago O'Hare Intl
5h 51m
1 stop
BRO9:51 pmBrownsville South Padre Is. Intl
Dec 3
BRO5:25 pmBrownsville South Padre Is. Intl
6h 50m
1 stop
ORD12:15 amChicago O'Hare Intl
$385

momondo 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, momondo users made 832,500 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from Illinois to Brownsville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Thu 9/10

7:00 am-2:11 pm

1 stop7h 11m

Brownsville South Padre Is. Intl

Mon 9/14

6:37 pm-11:43 pm

1 stop5h 06m

$319

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sat 8/22

8:00 am-6:13 pm

2 stops10h 13m

Brownsville South Padre Is. Intl

Tue 8/25

12:05 pm-6:04 pm

1 stop5h 59m

$324

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 12/4

1:46 pm-6:49 pm

1 stop5h 03m

Brownsville South Padre Is. Intl

Mon 12/7

2:48 pm-10:00 pm

1 stop7h 12m

$329

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Sat 8/22

1:05 pm-9:59 pm

2 stops8h 54m

Brownsville South Padre Is. Intl

Tue 8/25

7:15 am-3:38 pm

2 stops8h 23m

$329

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Fri 8/14

10:45 am-6:07 pm

1 stop7h 22m

Brownsville South Padre Is. Intl

Fri 8/21

6:37 pm-12:18 am

1 stop5h 41m

$330

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Wed 8/5

9:57 pm-7:55 am

2 stops33h 58m

Brownsville South Padre Is. Intl

Mon 8/10

8:35 am-11:10 pm

1 stop14h 35m

$366
Quickest round-trip

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Fri 7/17

7:22 pm-12:13 am

1 stop4h 51m

Brownsville South Padre Is. Intl

Tue 7/21

6:42 pm-11:58 pm

1 stop5h 16m

$369

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Thu 11/26

4:00 pm-9:51 pm

1 stop5h 51m

Brownsville South Padre Is. Intl

Thu 12/3

5:25 pm-12:15 am

1 stop6h 50m

$385

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Fri 10/2

8:00 am-6:13 pm

2 stops10h 13m

Brownsville South Padre Is. Intl

Sat 10/10

9:10 am-2:10 pm

1 stop5h 00m

$386

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Tue 7/14

5:30 am-11:26 am

1 stop5h 56m

Brownsville South Padre Is. Intl

Sat 7/18

4:44 pm-12:45 am

1 stop8h 01m

$399

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Brownsville from

How to get the cheapest flight ticket from Illinois to Brownsville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Brownsville?

The month of August is another great option to travel to Brownsville, with average flight prices from Illinois averaging around $237.

Can stopping save me money on Illinois to Brownsville flights?

You could potentially save up to 13% on your flight if you consider stops on a Illinois to Brownsville flight.

Cheap Illinois to Brownsville flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Brownsville

Fastest flight time

4h 36m

Direct flights

None
The fastest flight from Illinois to Brownsville takes 4h 36m
There are no direct flights from Illinois to Brownsville. There are no popular flight routes from Illinois to Brownsville.
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Frequently asked questions about flying from Illinois to Brownsville

  • When did momondo last update prices for flights from Illinois to Brownsville South Padre Is. Intl Airport?

    Prices for flights from Illinois to Brownsville South Padre Is. Intl Airport were last updated today.

  • How many operators does momondo search for flights from Illinois to Brownsville South Padre Is. Intl Airport?

  • How old do you have to be to fly from Illinois to Brownsville South Padre Is. Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Illinois to Brownsville South Padre Is. Intl Airport.

  • What documentation or ID do you need to fly to Brownsville South Padre Is. Intl Airport?

    The travel and health documents you'll need for your trip to Brownsville South Padre Is. Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Brownsville South Padre Is. Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Illinois to Brownsville

Compare and see reviews for airlines that fly from Illinois to Brownsville with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $237Free CancellationRating
7.1
11,770 reviews
Search American Airlines flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,926 reviews
Search United Airlines flights

Traveling to a place near Brownsville?

Book flights to Brownsville if you plan to visit one of these locations
South Padre Island

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Brownsville?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Illinois to Brownsville for you.

Can I find flights from Illinois to Brownsville with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Illinois to Brownsville flights to just show those with flexible booking policies.

How can momondo help me find flights from Illinois to Brownsville?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Brownsville.

I’m not ready to book a flight from Illinois to Brownsville right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Brownsville, momondo offers a useful price alert feature which will track prices for flights to Brownsville from Illinois and alert you when they change.

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