What is the cheapest airline to fly from Ontario to Brownsville round-trip?

Our cheapest airline available from Ontario to Brownsville is United Airlines. Our recent data shows that you can find tickets from as low as $519 on this airline.

What is the cheapest day to fly from Ontario to Brownsville?

Travelers seeking maximum savings on their Ontario to Brownsville flight should consider departing on Monday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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.

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).

What is the cheapest day to fly round-trip from Ontario to Brownsville?

Users have found that flying from Ontario to Brownsville on a Sunday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

What is the cheapest month to fly from Ontario to Brownsville?

January is one of the best times of the year to fly to Brownsville from Ontario. Prices for January average $480 per person but you can even find prices for as low as $276. The most expensive prices can be found in the month of May. Opting for a January flight can save you 23% on your journey compared to booking in May

What is the cheapest time of day to fly from ONT to BRO?

When flying from Ontario to Brownsville, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 12% versus a flight in the morning.

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.

$519+ Flights from Ontario to Brownsville

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Cheap flight deals from Ontario to Brownsville

Round-trip from	$519 (United Airlines)
Popular in	May
Cheapest in	January
Average price	$466

From Ontario to Brownsville South Padre Is. Intl

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).

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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in July 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 July 31, 2025.

Thu 9/256:00 amONT - BRO

1 stop8h 00mUnited Airlines

Sun 9/285:15 pmBRO - ONT

1 stop6h 09mUnited Airlines

Deal found 7/30

$519

Best flights from Ontario to Brownsville
Discover carefully curated flight deals from Ontario to Brownsville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2025.

Thu 9/256:00 amONT - BRO

1 stop8h 00mUnited Airlines

Sun 9/285:15 pmBRO - ONT

1 stop6h 09mUnited Airlines

Deal found 7/30

$519

Last-minute flights from Ontario to Brownsville
Discover last-minute flight deals from Ontario to Brownsville. Data last updated July 31, 2025 and is based on user searches.

Tue 8/56:00 amONT - BRO

1 stop8h 05mUnited Airlines

Fri 8/85:19 pmBRO - ONT

1 stop6h 18mUnited Airlines

Deal found 7/31

$807

Tue 8/126:00 amONT - BRO

1 stop8h 05mUnited Airlines

Fri 8/155:19 pmBRO - ONT

1 stop6h 18mUnited Airlines

Deal found 7/31

$763

Fly from

Fly to

Route

Depart

Return

Price

OntarioBrownsville

ONT - BRO

ONTBRO

Ontario

Thu 9/25

6:00 am-4:00 pm

1 stop8h 00m

Brownsville South Padre Is. Intl

Sun 9/28

5:15 pm-9:24 pm

1 stop6h 09m

$519

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 $474). 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.

Reviews of airlines servicing Brownsville

See what other customers who have flown with United Airlines from Ontario to Brownsville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,900 reviews

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

8,900 reviews

United Airlines

7.4

Good

8,900 reviews

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

What is the cheapest airline to fly from Ontario to Brownsville round-trip?
Our cheapest airline available from Ontario to Brownsville is United Airlines. Our recent data shows that you can find tickets from as low as $519 on this airline.
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 $474). 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.

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Top airline flying from Ontario to Brownsville

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$268	Average$438	FlexibilityNo cancel fee	On-time71%

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$519+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Brownsville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Brownsville

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Brownsville

Cheapest flights from Ontario to BrownsvilleExplore 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 July 31, 2025.

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 July 31, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Brownsville that are best for you.

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.

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?

Reviews of airlines servicing Brownsville

See what other customers who have flown with United Airlines from Ontario to Brownsville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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 is the cheapest airline to fly from Ontario to Brownsville round-trip?

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

How can I find direct flights from Ontario to Brownsville?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ontario to Brownsville

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Ontario to Brownsville

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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 July 31, 2025.