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Cheap flights from Illinois to Brownsville from $159

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 11/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Illinois to Brownsville

Cheap round-trip flights

American Airlines Logo
3:35 pm - 11:26 pmMLI-BRO
7h 51m1 stop
American Airlines Logo
5:42 pm - 11:03 pmBRO-MLI
5h 21m1 stop
$259American Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10
American Airlines Logo
5:54 pm - 10:23 pmSTL-BRO
4h 29m1 stop
American Airlines Logo
6:04 pm - 10:24 pmBRO-STL
4h 20m1 stop
$259American Airlines
Find Deal
Wed, Feb 11 - Thu, Feb 19
American Airlines Logo
12:53 pm - 10:23 pmSTL-BRO
9h 30m2 stops
American Airlines Logo
6:04 pm - 10:24 pmBRO-STL
4h 20m1 stop
$264American Airlines
Find Deal
Wed, Feb 11 - Thu, Feb 19
American Airlines Logo
4:17 pm - 10:55 pmORD-BRO
6h 38m1 stop
American Airlines Logo
6:38 pm - 11:42 pmBRO-ORD
5h 04m1 stop
$294American Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
American Airlines Logo
7:09 am - 2:21 pmSTL-BRO
7h 12m1 stop
American Airlines Logo
5:45 am - 11:44 amBRO-STL
5h 59m1 stop
$314American Airlines
Find Deal
Mon, Jan 12 - Sun, Jan 18
United Airlines Logo
6:15 am - 11:28 amSTL-BRO
5h 13m1 stop
United Airlines Logo
9:35 am - 3:50 pmBRO-STL
6h 15m1 stop
$319United Airlines
Find Deal
Tue, Oct 28 - Thu, Oct 30
American Airlines Logo
4:17 pm - 10:55 pmORD-BRO
6h 38m1 stop
American Airlines Logo
6:38 pm - 11:42 pmBRO-ORD
5h 04m1 stop
$319American Airlines
Find Deal
Tue, Oct 7 - Sat, Oct 11
American Airlines Logo
9:58 am - 6:08 pmSTL-BRO
8h 10m2 stops
American Airlines Logo
7:08 pm - 11:49 pmBRO-STL
4h 41m1 stop
$324American Airlines
Find Deal
Tue, Oct 28 - Thu, Oct 30
American Airlines Logo
6:00 am - 2:27 pmSTL-BRO
8h 27m2 stops
American Airlines Logo
5:38 am - 4:04 pmBRO-STL
10h 26m2 stops
$329American Airlines
Find Deal
Tue, Oct 28 - Thu, Oct 30
United Airlines Logo
8:50 am - 3:38 pmSTL-BRO
6h 48m1 stop
United Airlines Logo
12:07 pm - 4:35 pmBRO-STL
4h 28m1 stop
$389United Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11

American Airlines flights from Illinois to Brownsville

Our best American Airlines deals on Illinois to Brownsville flight tickets
American Airlines
Nov 6
MLI3:35 pmMoline Quad-City
7h 51m
1 stop
BRO11:26 pmBrownsville South Padre Is. Intl
Nov 10
BRO5:42 pmBrownsville South Padre Is. Intl
5h 21m
1 stop
MLI11:03 pmMoline Quad-City
$259
Find similar
American Airlines
Feb 11
STL12:53 pmLambert-St Louis
9h 30m
2 stops
BRO10:23 pmBrownsville South Padre Is. Intl
Feb 19
BRO6:04 pmBrownsville South Padre Is. Intl
4h 20m
1 stop
STL10:24 pmLambert-St Louis
$264
Find similar
American Airlines
Oct 11
ORD4:17 pmChicago O'Hare Intl
6h 38m
1 stop
BRO10:55 pmBrownsville South Padre Is. Intl
Oct 18
BRO6:38 pmBrownsville South Padre Is. Intl
5h 04m
1 stop
ORD11:42 pmChicago O'Hare Intl
$294
Find similar

United Airlines flights from Illinois to Brownsville

Our best United Airlines deals on Illinois to Brownsville flight tickets
United Airlines
Oct 28
STL6:15 amLambert-St Louis
5h 13m
1 stop
BRO11:28 amBrownsville South Padre Is. Intl
Oct 30
BRO9:35 amBrownsville South Padre Is. Intl
6h 15m
1 stop
STL3:50 pmLambert-St Louis
$319
Find similar
United Airlines
Mar 10
STL8:50 amLambert-St Louis
6h 48m
1 stop
BRO3:38 pmBrownsville South Padre Is. Intl
Mar 11
BRO12:07 pmBrownsville South Padre Is. Intl
4h 28m
1 stop
STL4:35 pmLambert-St Louis
$389
Find similar
United Airlines
Mar 10
STL10:30 amLambert-St Louis
7h 23m
2 stops
BRO5:53 pmBrownsville South Padre Is. Intl
Mar 11
BRO12:07 pmBrownsville South Padre Is. Intl
4h 28m
1 stop
STL4:35 pmLambert-St Louis
$394
Find similar

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 September 23, 2025.
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

MolineBrownsville

MLI - BRO

MLIBRO

Moline Quad-City

Thu 11/6

3:35 pm-11:26 pm

1 stop7h 51m

Brownsville South Padre Is. Intl

Mon 11/10

5:42 pm-11:03 pm

1 stop5h 21m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 2/11

5:54 pm-10:23 pm

1 stop4h 29m

Brownsville South Padre Is. Intl

Thu 2/19

6:04 pm-10:24 pm

1 stop4h 20m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Wed 2/11

12:53 pm-10:23 pm

2 stops9h 30m

Brownsville South Padre Is. Intl

Thu 2/19

6:04 pm-10:24 pm

1 stop4h 20m

$264

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

Sat 10/18

6:38 pm-11:42 pm

1 stop5h 04m

$294

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Mon 1/12

7:09 am-2:21 pm

1 stop7h 12m

Brownsville South Padre Is. Intl

Sun 1/18

5:45 am-11:44 am

1 stop5h 59m

$314

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/28

6:15 am-11:28 am

1 stop5h 13m

Brownsville South Padre Is. Intl

Thu 10/30

9:35 am-3:50 pm

1 stop6h 15m

$319

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

Tue 10/7

4:17 pm-10:55 pm

1 stop6h 38m

Brownsville South Padre Is. Intl

Sat 10/11

6:38 pm-11:42 pm

1 stop5h 04m

$319

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/28

9:58 am-6:08 pm

2 stops8h 10m

Brownsville South Padre Is. Intl

Thu 10/30

7:08 pm-11:49 pm

1 stop4h 41m

$324

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 10/28

6:00 am-2:27 pm

2 stops8h 27m

Brownsville South Padre Is. Intl

Thu 10/30

5:38 am-4:04 pm

2 stops10h 26m

$329

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

Tue 3/10

8:50 am-3:38 pm

1 stop6h 48m

Brownsville South Padre Is. Intl

Wed 3/11

12:07 pm-4:35 pm

1 stop4h 28m

$389

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 February is another great option to travel to Brownsville, with average flight prices from Illinois averaging around $353.

What is the cheapest day to depart on your flight to Brownsville?

The cheapest day to depart from Illinois to Brownsville is on a Thursday. Travelers who choose to depart for Brownsville on a Thursday will often find tickets for as low as $364. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Brownsville on Sunday is $459.

What is the cheapest time of day to depart on your flight to Brownsville?

Flying to Brownsville from Illinois at noon is the least expensive time of day to depart. momondo users have found prices as low as $384 when looking at flights departing at noon. Flights to Brownsville are more costly in the afternoon, with an average ticket price of $490. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Illinois to Brownsville flight deals and tips

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

Direct flights

None
There are no direct flights from Illinois to Brownsville. There are no popular flight routes from Illinois to Brownsville.
Search flight deals

  • 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 $268Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
8,926 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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