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Cheap flights from Ontario to Brownsville from $235

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Brownsville departing on 11/26. 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 Ontario to Brownsville

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 4:12 pmONT-BRO
8h 12m1 stop
United Airlines Logo
5:25 pm - 9:58 pmBRO-ONT
6h 33m1 stop
$269United Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
United Airlines Logo
6:00 am - 4:12 pmONT-BRO
8h 12m1 stop
United Airlines Logo
12:13 pm - 10:53 pmBRO-ONT
12h 40m2 stops
$274United Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
United Airlines Logo
6:00 am - 4:12 pmONT-BRO
8h 12m1 stop
United Airlines Logo
12:15 pm - 10:57 pmBRO-ONT
12h 42m2 stops
$354United Airlines
Find Deal
Wed, Feb 18 - Thu, Feb 26
United Airlines Logo
6:00 am - 6:02 pmONT-BRO
10h 02m2 stops
United Airlines Logo
12:15 pm - 10:57 pmBRO-ONT
12h 42m2 stops
$394United Airlines
Find Deal
Wed, Feb 18 - Thu, Feb 26
United Airlines Logo
5:05 am - 6:02 pmONT-BRO
10h 57m2 stops
United Airlines Logo
12:13 pm - 10:53 pmBRO-ONT
12h 40m2 stops
$409United Airlines
Find Deal
Fri, Jan 16 - Tue, Jan 20
American Airlines Logo
6:10 am - 2:28 pmONT-BRO
6h 18m1 stop
American Airlines Logo
5:49 am - 9:29 amBRO-ONT
5h 40m1 stop
$434American Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
American Airlines Logo
12:26 pm - 11:17 pmONT-BRO
8h 51m2 stops
American Airlines Logo
5:49 am - 9:29 amBRO-ONT
5h 40m1 stop
$439American Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
5:40 am - 6:41 pmONT-BRO
11h 01m2 stops
United Airlines Logo
12:07 pm - 10:37 pmBRO-ONT
12h 30m2 stops
$444United Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
5:40 am - 6:41 pmONT-BRO
11h 01m2 stops
United Airlines Logo
5:10 am - 12:43 pmBRO-ONT
9h 33m2 stops
$450United Airlines
Find Deal
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
6:04 am - 4:07 pmONT-BRO
8h 03m1 stop
United Airlines Logo
4:55 pm - 9:52 pmBRO-ONT
6h 57m1 stop
$464United Airlines
Find Deal
Tue, Dec 30 - Mon, Jan 5

United Airlines flights from Ontario to Brownsville

Our best United Airlines deals on Ontario to Brownsville flight tickets
United Airlines
Jan 16
ONT6:00 amOntario
8h 12m
1 stop
BRO4:12 pmBrownsville South Padre Is. Intl
Jan 20
BRO5:25 pmBrownsville South Padre Is. Intl
6h 33m
1 stop
ONT9:58 pmOntario
$269
Find similar
United Airlines
Jan 16
ONT6:00 amOntario
8h 12m
1 stop
BRO4:12 pmBrownsville South Padre Is. Intl
Jan 20
BRO12:13 pmBrownsville South Padre Is. Intl
12h 40m
2 stops
ONT10:53 pmOntario
$274
Find similar
United Airlines
Feb 18
ONT6:00 amOntario
8h 12m
1 stop
BRO4:12 pmBrownsville South Padre Is. Intl
Feb 26
BRO12:15 pmBrownsville South Padre Is. Intl
12h 42m
2 stops
ONT10:57 pmOntario
$354
Find similar

American Airlines flights from Ontario to Brownsville

Our best American Airlines deals on Ontario to Brownsville flight tickets
American Airlines
Mar 7
ONT6:10 amOntario
6h 18m
1 stop
BRO2:28 pmBrownsville South Padre Is. Intl
Mar 11
BRO5:49 amBrownsville South Padre Is. Intl
5h 40m
1 stop
ONT9:29 amOntario
$434
Find similar
American Airlines
Mar 7
ONT12:26 pmOntario
8h 51m
2 stops
BRO11:17 pmBrownsville South Padre Is. Intl
Mar 11
BRO5:49 amBrownsville South Padre Is. Intl
5h 40m
1 stop
ONT9:29 amOntario
$439
Find similar
American Airlines
Mar 22
ONT11:59 pmOntario
7h 50m
1 stop
BRO9:49 amBrownsville South Padre Is. Intl
Mar 28
BRO6:04 pmBrownsville South Padre Is. Intl
7h 39m
1 stop
ONT11:43 pmOntario
$634
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario 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 November 5, 2025.
Use the filters below to find and compare flights from Ontario to Brownsville that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Fri 1/16

6:00 am-4:12 pm

1 stop8h 12m

Brownsville South Padre Is. Intl

Tue 1/20

5:25 pm-9:58 pm

1 stop6h 33m

$269

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Fri 1/16

6:00 am-4:12 pm

1 stop8h 12m

Brownsville South Padre Is. Intl

Tue 1/20

12:13 pm-10:53 pm

2 stops12h 40m

$274

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Wed 2/18

6:00 am-4:12 pm

1 stop8h 12m

Brownsville South Padre Is. Intl

Thu 2/26

12:15 pm-10:57 pm

2 stops12h 42m

$354

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Wed 2/18

6:00 am-6:02 pm

2 stops10h 02m

Brownsville South Padre Is. Intl

Thu 2/26

12:15 pm-10:57 pm

2 stops12h 42m

$394

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Fri 1/16

5:05 am-6:02 pm

2 stops10h 57m

Brownsville South Padre Is. Intl

Tue 1/20

12:13 pm-10:53 pm

2 stops12h 40m

$409

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Sat 3/7

6:10 am-2:28 pm

1 stop6h 18m

Brownsville South Padre Is. Intl

Wed 3/11

5:49 am-9:29 am

1 stop5h 40m

$434

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Sat 3/7

12:26 pm-11:17 pm

2 stops8h 51m

Brownsville South Padre Is. Intl

Wed 3/11

5:49 am-9:29 am

1 stop5h 40m

$439

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Sat 3/7

5:40 am-6:41 pm

2 stops11h 01m

Brownsville South Padre Is. Intl

Wed 3/11

12:07 pm-10:37 pm

2 stops12h 30m

$444

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Sat 3/7

5:40 am-6:41 pm

2 stops11h 01m

Brownsville South Padre Is. Intl

Wed 3/11

5:10 am-12:43 pm

2 stops9h 33m

$450

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Tue 12/30

6:04 am-4:07 pm

1 stop8h 03m

Brownsville South Padre Is. Intl

Mon 1/5

4:55 pm-9:52 pm

1 stop6h 57m

$464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ontario 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 day to depart on your flight to Brownsville?

The cheapest day to depart from Ontario to Brownsville is on a Sunday. Travelers who choose to depart for Brownsville on a Sunday will often find tickets for as low as $421. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Brownsville on Thursday is $636.

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

Flying to Brownsville from Ontario at noon is the least expensive time of day to depart. momondo users have found prices as low as $357 when looking at flights departing at noon. Flights to Brownsville are more costly in the evening, with an average ticket price of $528. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Ontario to Brownsville

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Brownsville according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Brownsville (ONT to BRO) flight deals and tips

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

Direct flights

None
There are no direct flights from Ontario to Brownsville. There are no popular flight routes from Ontario to Brownsville.
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  • How far is Ontario to Brownsville South Padre Is. Intl by plane?

    The straight-line distance from Ontario to Brownsville South Padre Is. Intl is 1327.2 mi. By plane, this route typically takes 6h 18m.

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

    Prices for flights from Ontario Airport to Brownsville South Padre Is. Intl Airport are refreshed on a daily basis.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Brownsville South Padre Is. Intl Airport.

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

    The required travel and health documents for your Brownsville South Padre Is. Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Brownsville South Padre Is. Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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 Ontario to Brownsville?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Brownsville from Ontario.

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

All flight searches from Ontario to Brownsville on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Ontario to Brownsville flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Ontario to Brownsville flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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