$120 Cheap Flights from Harlingen (HRL) to Ontario (ONT)

View $120 flight on Mon, Feb 2, 2026Opens in a new window

Popular airlines from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)

Cheap Flights from Harlingen to Ontario (HRL-ONT)

Prices were available within the past 7 days and start at $120 for one-way flights and $239 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Sat, Nov 8 - Tue, Nov 11
HRL
Harlingen
ONT
Ontario
$239 Roundtrip, found 16 hours ago
$239
Roundtrip
found 16 hours ago
Select Southwest Airlines flight, departing Sat, Nov 8 from Harlingen to Ontario, returning Tue, Nov 11, priced at $239 found 16 hours ago
American Airlines
Thu, Nov 6 - Sun, Nov 9
HRL
Harlingen
ONT
Ontario
$257 Roundtrip, found 16 hours ago
$257
Roundtrip
found 16 hours ago
Select American Airlines flight, departing Thu, Nov 6 from Harlingen to Ontario, returning Sun, Nov 9, priced at $257 found 16 hours ago
Southwest Airlines
Thu, Nov 13 - Thu, Dec 4
HRL
Harlingen
ONT
Ontario
$269 Roundtrip, found 4 days ago
$269
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Thu, Nov 13 from Harlingen to Ontario, returning Thu, Dec 4, priced at $269 found 4 days ago
Southwest Airlines
Thu, Nov 13 - Thu, Dec 4
HRL
Harlingen
ONT
Ontario
$274 Roundtrip, found 4 days ago
$274
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Thu, Nov 13 from Harlingen to Ontario, returning Thu, Dec 4, priced at $274 found 4 days ago
Southwest Airlines
Tue, Oct 21 - Tue, Oct 28
HRL
Harlingen
ONT
Ontario
$285 Roundtrip, found 2 hours ago
$285
Roundtrip
found 2 hours ago
Select Southwest Airlines flight, departing Tue, Oct 21 from Harlingen to Ontario, returning Tue, Oct 28, priced at $285 found 2 hours ago
Southwest Airlines
Sun, Nov 9 - Sat, Nov 15
HRL
Harlingen
ONT
Ontario
$290 Roundtrip, found 4 days ago
$290
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sun, Nov 9 from Harlingen to Ontario, returning Sat, Nov 15, priced at $290 found 4 days ago
United
Thu, Nov 13 - Thu, Dec 4
HRL
Harlingen
ONT
Ontario
$300 Roundtrip, found 4 days ago
$300
Roundtrip
found 4 days ago
Select United flight, departing Thu, Nov 13 from Harlingen to Ontario, returning Thu, Dec 4, priced at $300 found 4 days ago
Southwest Airlines
Sun, Nov 9 - Sat, Nov 15
HRL
Harlingen
ONT
Ontario
$300 Roundtrip, found 4 days ago
$300
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Sun, Nov 9 from Harlingen to Ontario, returning Sat, Nov 15, priced at $300 found 4 days ago
American Airlines
Thu, Nov 13 - Thu, Dec 4
HRL
Harlingen
ONT
Ontario
$304 Roundtrip, found 4 days ago
$304
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Nov 13 from Harlingen to Ontario, returning Thu, Dec 4, priced at $304 found 4 days ago
American Airlines
Thu, Nov 13 - Mon, Nov 17
HRL
Harlingen
ONT
Ontario
$307 Roundtrip, found 3 days ago
$307
Roundtrip
found 3 days ago
Select American Airlines flight, departing Thu, Nov 13 from Harlingen to Ontario, returning Mon, Nov 17, priced at $307 found 3 days ago

Find the cheapest month to fly from Harlingen (HRL) to Ontario (ONT)

August is typically the cheapest month to fly

From $203 - $418 per traveler.

Alternative airports near Ontario

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $319
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $319

Frequently asked questions

How much does a flight from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Snag a cheap one-way flight from $120 or cheap return flight from $239 from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)?
November is the cheapest month to fly from HRL to ONT. Timing your trip outside of the busy season is often the key to finding better fares.
What is the cheapest airline that flies from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll fly you from HRL to ONT. Then, sort your results by "Price (lowest to highest)" to pick up a great deal.
How many flights per day from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)?
There aren't any daily nonstop flights departing from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from HRL to ONT?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)?
To avoid potential delays on the Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT) route, fly before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Booking your plane ticket from HRL to ONT shortly before your trip is typically more expensive. But if you're flexible with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a HRL to ONT flight and hotel package?
Securing a HRL to ONT flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Pick from our impressive range of hotels and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Valley Intl. Airport (HRL) to Los Angeles - Ontario Intl. Airport (ONT)?
Typically, it's possible to reschedule or cancel your HRL to ONT flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and whether any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Valley Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Southwest Airlines, United
Roundtrip price
$238
Distance
1304 mi

Book with confidence

Book with confidence

Harlingen to Ontario Flights

The cheapest times to fly from Harlingen to Ontario

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Harlingen to Ontario are during the month of November. You can find some of the cheapest flights from Harlingen to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Harlingen to Ontario

Sunday is one of the best days to book for cheap flights from Harlingen to Ontario: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Harlingen to Ontario

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Harlingen to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $120 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Harlingen to Ontario flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Harlingen to Ontario airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Harlingen to Ontario Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.