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$324+ Cheap flights from Ontario to Brownsville (ONT - BRO)

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BRO
Jun 27 — Jul 41
Fri 6/27
Fri 7/4
1 adult, Economy
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Cheap flight deals from Ontario to Brownsville

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Brownsville (BRO). 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 June 22, 2025.

Round-trip from

$324
(American Airlines)

Popular in

May

Cheapest in

January

Average price

$505
From Ontario to Brownsville South Padre Is. Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Ontario to Brownsville

Cheapest flights from Ontario to Brownsville
Explore the most affordable flight options available from Ontario to Brownsville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 22, 2025.

This American Airlines deal was found by Cheapflights users on 6/20. 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.
Thu 7/1012:59 amONT - BRO
1 stop6h 58mAmerican Airlines
Tue 7/157:26 pmBRO - ONT
1 stop6h 28mAmerican Airlines
Deal found 6/20$324
This United Airlines deal was found by Cheapflights users on 6/20. 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 7/111:34 pmONT - BRO
2 stops7h 58mUnited Airlines
Tue 7/155:19 pmBRO - ONT
1 stop6h 18mUnited Airlines
Deal found 6/20$354

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 22, 2025.
Use the filters below to find and compare flights from Ontario to Brownsville that are best for you.

Fly from

Ontario

Fly to

Brownsville

Route

Depart

Return

Price

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Thu 7/10

12:59 am-9:57 am

1 stop6h 58m

Brownsville South Padre Is. Intl

Tue 7/15

7:26 pm-11:54 pm

1 stop6h 28m

$324

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Fri 7/11

1:34 pm-11:32 pm

2 stops7h 58m

Brownsville South Padre Is. Intl

Tue 7/15

5:19 pm-9:37 pm

1 stop6h 18m

$354

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Mon 7/28

1:34 pm-11:32 pm

2 stops7h 58m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/20

Best time to book a flight from Ontario to Brownsville

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

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Brownsville (average of $328). Flying from Ontario to Brownsville in March is currently the most expensive (average of $468). 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.

Rainfall in Brownsville by month

Plan your trip to Brownsville by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Brownsville ranges from 1.1 - 5.9 inches per month. September is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Brownsville when rainfall is around 1.1 in.

Temperature in Brownsville by month

Plan your trip to Brownsville by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Brownsville, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 86.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 F).

Reviews of airlines servicing Brownsville

Get insights into the airlines that provide service to Brownsville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Brownsville. Reviews last updated June 22, 2025.
United Airlines
7.4
Good
8,825 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
8,825 reviews
United Airlines
7.4
Good
8,825 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,825 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Crew

8.1

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Related info for your journey

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

  • What are the cheapest airlines flying from Ontario to Brownsville round-trip?

    Our cheapest airline available from Ontario to Brownsville is American Airlines. Our recent data shows that you can find tickets from as low as $324 on this airline. An additional option worth looking into is United Airlines, starting at $354.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ontario to Brownsville (average of $328). Flying from Ontario to Brownsville in March is currently the most expensive (average of $468). 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 Ontario to Brownsville

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Top airline flying from Ontario to Brownsville

Discover the top airline that operate flights from Ontario to Brownsville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$317Average$438FlexibilityNo cancel feeOn-time71%

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