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Cheap flights from Illinois to Brownsville from $165

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 12/15. 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

Enter your travel dates to find the best prices.
United Airlines Logo
4:35 pm - 9:31 pmSTL-BRO
4h 56m1 stop
United Airlines Logo
9:30 am - 3:39 pmBRO-STL
6h 09m1 stop
$259United Airlines
Find Deal
dom, fev 1 - sáb, fev 7
United Airlines Logo
8:30 am - 6:02 pmSTL-BRO
9h 32m2 stops
United Airlines Logo
9:30 am - 3:39 pmBRO-STL
6h 09m1 stop
$264United Airlines
Find Deal
dom, fev 1 - sáb, fev 7
United Airlines Logo
3:53 pm - 9:31 pmORD-BRO
5h 38m1 stop
United Airlines Logo
5:25 pm - 10:58 pmBRO-ORD
5h 33m1 stop
$269United Airlines
Find Deal
sex, jan 30 - seg, fev 9
American Airlines Logo
9:11 am - 2:48 pmORD-BRO
5h 37m1 stop
American Airlines Logo
6:49 pm - 11:44 pmBRO-ORD
4h 55m1 stop
$299American Airlines
Find Deal
sex, jan 30 - seg, fev 9
United Airlines Logo
7:45 am - 6:33 pmSTL-BRO
10h 48m2 stops
United Airlines Logo
5:25 pm - 10:06 pmBRO-STL
4h 41m1 stop
$313United Airlines
Find Deal
qui, abr 23 - qui, abr 30
American Airlines Logo
6:00 am - 2:48 pmSTL-BRO
8h 48m2 stops
American Airlines Logo
6:00 am - 6:13 pmBRO-STL
12h 13m2 stops
$324American Airlines
Find Deal
dom, fev 1 - sáb, fev 7
United Airlines Logo
6:00 am - 11:31 amSTL-BRO
5h 31m1 stop
United Airlines Logo
5:25 pm - 10:00 pmBRO-STL
4h 35m1 stop
$329United Airlines
Find Deal
qua, jan 14 - ter, jan 20
United Airlines Logo
8:30 am - 9:31 pmSTL-BRO
13h 01m2 stops
United Airlines Logo
5:25 pm - 10:00 pmBRO-STL
4h 35m1 stop
$334United Airlines
Find Deal
qua, jan 14 - ter, jan 20
United Airlines Logo
8:30 am - 9:31 pmSTL-BRO
13h 01m2 stops
United Airlines Logo
9:30 am - 11:59 pmBRO-STL
14h 29m2 stops
$339United Airlines
Find Deal
qua, jan 14 - ter, jan 20
United Airlines Logo
12:45 pm - 6:02 pmORD-BRO
5h 17m1 stop
United Airlines Logo
9:30 am - 9:55 amBRO-ORD
24h 25m2 stops
$386United Airlines
Find Deal
sex, jan 23 - ter, jan 27

United Airlines flights from Illinois to Brownsville

Our best United Airlines deals on Illinois to Brownsville flight tickets
United Airlines
Feb 1
STL4:35 pmLambert-St Louis
4h 56m
1 stop
BRO9:31 pmBrownsville South Padre Is. Intl
Feb 7
BRO9:30 amBrownsville South Padre Is. Intl
6h 09m
1 stop
STL3:39 pmLambert-St Louis
$259
Find similar
United Airlines
Feb 1
STL8:30 amLambert-St Louis
9h 32m
2 stops
BRO6:02 pmBrownsville South Padre Is. Intl
Feb 7
BRO9:30 amBrownsville South Padre Is. Intl
6h 09m
1 stop
STL3:39 pmLambert-St Louis
$264
Find similar
United Airlines
Jan 30
ORD3:53 pmChicago O'Hare Intl
5h 38m
1 stop
BRO9:31 pmBrownsville South Padre Is. Intl
Feb 9
BRO5:25 pmBrownsville South Padre Is. Intl
5h 33m
1 stop
ORD10:58 pmChicago O'Hare Intl
$269
Find similar

American Airlines flights from Illinois to Brownsville

Our best American Airlines deals on Illinois to Brownsville flight tickets
American Airlines
Jan 30
ORD9:11 amChicago O'Hare Intl
5h 37m
1 stop
BRO2:48 pmBrownsville South Padre Is. Intl
Feb 9
BRO6:49 pmBrownsville South Padre Is. Intl
4h 55m
1 stop
ORD11:44 pmChicago O'Hare Intl
$299
Find similar
American Airlines
Feb 1
STL6:00 amLambert-St Louis
8h 48m
2 stops
BRO2:48 pmBrownsville South Padre Is. Intl
Feb 7
BRO6:00 amBrownsville South Padre Is. Intl
12h 13m
2 stops
STL6:13 pmLambert-St Louis
$324
Find similar
American Airlines
Jan 9
MLI11:00 amMoline Quad-City
7h 19m
1 stop
BRO6:19 pmBrownsville South Padre Is. Intl
Jan 19
BRO3:18 pmBrownsville South Padre Is. Intl
6h 40m
1 stop
MLI9:58 pmMoline Quad-City
$429
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 novembro 10, 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

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

dom 2/1

4:35 pm-9:31 pm

1 stop4h 56m

Brownsville South Padre Is. Intl

sáb 2/7

9:30 am-3:39 pm

1 stop6h 09m

$259

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

dom 2/1

8:30 am-6:02 pm

2 stops9h 32m

Brownsville South Padre Is. Intl

sáb 2/7

9:30 am-3:39 pm

1 stop6h 09m

$264

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

sex 1/30

3:53 pm-9:31 pm

1 stop5h 38m

Brownsville South Padre Is. Intl

seg 2/9

5:25 pm-10:58 pm

1 stop5h 33m

$269

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

sex 1/30

9:11 am-2:48 pm

1 stop5h 37m

Brownsville South Padre Is. Intl

seg 2/9

6:49 pm-11:44 pm

1 stop4h 55m

$299

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

qui 4/23

7:45 am-6:33 pm

2 stops10h 48m

Brownsville South Padre Is. Intl

qui 4/30

5:25 pm-10:06 pm

1 stop4h 41m

$313

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

dom 2/1

6:00 am-2:48 pm

2 stops8h 48m

Brownsville South Padre Is. Intl

sáb 2/7

6:00 am-6:13 pm

2 stops12h 13m

$324

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

qua 1/14

6:00 am-11:31 am

1 stop5h 31m

Brownsville South Padre Is. Intl

ter 1/20

5:25 pm-10:00 pm

1 stop4h 35m

$329

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

qua 1/14

8:30 am-9:31 pm

2 stops13h 01m

Brownsville South Padre Is. Intl

ter 1/20

5:25 pm-10:00 pm

1 stop4h 35m

$334

St. LouisBrownsville

STL - BRO

STLBRO

Lambert-St Louis

qua 1/14

8:30 am-9:31 pm

2 stops13h 01m

Brownsville South Padre Is. Intl

ter 1/20

9:30 am-11:59 pm

2 stops14h 29m

$339

ChicagoBrownsville

ORD - BRO

ORDBRO

Chicago O'Hare Intl

sex 1/23

12:45 pm-6:02 pm

1 stop5h 17m

Brownsville South Padre Is. Intl

ter 1/27

9:30 am-9:55 am

2 stops24h 25m

$386

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 September is another great option to travel to Brownsville, with average flight prices from Illinois averaging around $348.

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 $257Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,012 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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