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$274+ Cheap flights from Brownsville to Ontario (BRO - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
BRO — ONT
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Brownsville to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Brownsville (BRO) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$274
(United Airlines)

Popular in

January

Cheapest in

September

Average price

$268
From Brownsville South Padre Is. Intl to Ontario
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Highest demand for flights based on searches. 14% potential increase in price ($74 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Brownsville to Ontario

Cheapest flights from Brownsville to Ontario
Explore the most affordable flight options available from Brownsville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This United Airlines deal was found by Cheapflights users on 9/15. 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 10/812:10 pmBRO - ONT
2 stops12h 42mUnited Airlines
Sat 10/116:00 amONT - BRO
1 stop8h 00mUnited Airlines
Deal found 9/15$274
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/82:57 pmBRO - ONT
1 stop6h 06mAmerican Airlines
Sat 10/1112:47 pmONT - BRO
1 stop8h 08mAmerican Airlines
Deal found 9/15$324
This American Airlines deal was found by Cheapflights users on 9/14. 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 11/45:42 pmBRO - ONT
1 stop6h 47mAmerican Airlines
Sat 11/812:53 pmONT - BRO
1 stop8h 11mAmerican Airlines
Deal found 9/14$349
This American Airlines deal was found by Cheapflights users on 9/13. 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.
Fri 10/107:08 pmBRO - ONT
1 stop6h 51mAmerican Airlines
Thu 10/1611:59 pmONT - BRO
1 stop8h 02mAmerican Airlines
Deal found 9/13$379
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Fri 10/35:15 pmBRO - ONT
1 stop6h 09mUnited Airlines
Mon 10/66:00 amONT - BRO
1 stop8h 00mUnited Airlines
Deal found 9/14$399
This United Airlines deal was found by Cheapflights users on 9/15. 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 9/235:15 pmBRO - ONT
1 stop6h 10mUnited Airlines
Tue 10/76:00 amONT - BRO
1 stop8h 00mUnited Airlines
Deal found 9/15$404
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Sun 9/286:57 pmBRO - ONT
1 stop7h 02mAmerican Airlines
Tue 10/76:10 amONT - BRO
1 stop6h 17mAmerican Airlines
Deal found 9/15$406
This American Airlines deal was found by Cheapflights users on 9/15. 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 9/2310:41 amBRO - ONT
2 stops9h 35mAmerican Airlines
Mon 10/611:59 pmONT - BRO
1 stop7h 54mAmerican Airlines
Deal found 9/15$411
This United Airlines deal was found by Cheapflights users on 9/14. 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 11/45:15 pmBRO - ONT
1 stop6h 34mUnited Airlines
Sat 11/86:38 pmONT - BRO
3 stops26h 58mUnited Airlines
Deal found 9/14$414

Cheapflights Fare Finder

 
Customize your flight search to find flights from Brownsville to Ontario 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 September 15, 2025.
Use the filters below to find and compare flights from Brownsville to Ontario that are best for you.

Fly from

Brownsville

Fly to

Ontario

Route

Depart

Return

Price

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Wed 10/8

12:10 pm-10:52 pm

2 stops12h 42m

Ontario

Sat 10/11

6:00 am-4:00 pm

1 stop8h 00m

$274

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Wed 10/8

2:57 pm-7:03 pm

1 stop6h 06m

Ontario

Sat 10/11

12:47 pm-10:55 pm

1 stop8h 08m

$324

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Fri 2/20

5:46 am-9:31 am

1 stop5h 45m

Ontario

Tue 2/24

6:00 am-2:20 pm

1 stop6h 20m

$349

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Tue 11/4

5:42 pm-10:29 pm

1 stop6h 47m

Ontario

Sat 11/8

12:53 pm-11:04 pm

1 stop8h 11m

$349

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Wed 11/5

5:20 am-9:57 am

1 stop6h 37m

Ontario

Sat 11/8

12:55 pm-11:04 pm

2 stops8h 09m

$354

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Fri 10/10

7:08 pm-11:59 pm

1 stop6h 51m

Ontario

Thu 10/16

11:59 pm-10:01 am

1 stop8h 02m

$379

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Fri 2/20

12:07 pm-10:57 pm

2 stops12h 50m

Ontario

Tue 2/24

5:40 am-5:53 pm

2 stops10h 13m

$384

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Fri 10/3

5:15 pm-9:24 pm

1 stop6h 09m

Ontario

Mon 10/6

6:00 am-4:00 pm

1 stop8h 00m

$399

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Thu 9/25

5:15 pm-9:24 pm

1 stop6h 09m

Ontario

Tue 10/7

6:00 am-4:00 pm

1 stop8h 00m

$404

BrownsvilleOntario

BRO - ONT

BROONT

Brownsville South Padre Is. Intl

Fri 9/26

5:15 pm-9:24 pm

1 stop6h 09m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 11 results
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Best time to book a flight from Brownsville to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario 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 Ontario

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

Currently, August is the cheapest month in which you can book a flight from Brownsville to Ontario (average of $246). Flying from Brownsville to Ontario in March 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.

Related info for your journey

Find useful and relevant information for your journey from Brownsville to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Brownsville to Ontario?

    For as low as $324, United Airlines can have you in Ontario from Brownsville in 6h 06m. The distance between Brownsville and Ontario is about 1328 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Brownsville to Ontario (average of $246). Flying from Brownsville to Ontario in March 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 Ontario

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