What is the cheapest airline to fly from Ontario to Harlingen, Texas round-trip?

Flying on United Airlines is currently your cheapest option to Harlingen, Texas, with prices starting at $428.

What is the cheapest day to fly from Ontario to Harlingen, Texas?

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

What is the cheapest day to fly round-trip from Ontario to Harlingen, Texas?

Flights from Ontario to Harlingen, Texas are found to be more expensive on Sunday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Harlingen, Texas.

What is the cheapest month to fly from Ontario to Harlingen, Texas?

June can be a great time to fly to Harlingen, Texas from Ontario with a flight ticket averaging about $366. Cheapflights users have found deals in the month of June for as cheap as $238. The most expensive prices can be found in the month of March.

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

It’s typically best to fly out from Ontario to Harlingen, Texas in the morning. Doing so could potentially save you 5% on the flight price compared to flying at noon, which is usually more expensive.

Most accurate provider : When it comes to deals on Ontario-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Harlingen, Texas flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Ontario-Harlingen, Texas flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Ontario to Harlingen?

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

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

Yes. Cheapflights offers flight deals from Ontario to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$397+ Flights from Ontario to Harlingen, TX - Compare & Save Big

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1. Tell us where you want to go

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Cheap flight deals from Ontario to Harlingen

Most accurate provider	FlightHub 3 stars
Most trusted provider	Expedia 3 stars
Round-trip from	$428 (United Airlines)
Popular in	March
Cheapest in	June
Average price	$447

Provider with most accurate pricing for Ontario-Harlingen Valley Intl flight deals.

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Provider most trusted by Cheapflights users for Ontario-Harlingen Valley Intl flights.

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From Ontario to Harlingen Valley 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 ($10 potential savings vs. average RT price).

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Average for round-trip flights in May 2025

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Find flight deals from Ontario to Harlingen

Cheapest flights from Ontario to Harlingen
Explore the most affordable flight options available from Ontario to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2025.

Tue 5/206:08 amONT - HRL

1 stop5h 16mUnited Airlines

Wed 5/285:20 pmHRL - ONT

1 stop5h 50mUnited Airlines

Deal found 5/11

$397

Wed 5/1410:51 amONT - HRL

1 stop6h 40mAmerican Airlines

Sat 5/247:56 pmHRL - ONT

2 stops14h 58mAmerican Airlines

Deal found 5/12

$513

Best flights from Ontario to Harlingen
Discover carefully curated flight deals from Ontario to Harlingen that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated May 12, 2025.

Tue 5/276:00 amONT - HRL

1 stop5h 25mUnited Airlines

Sat 5/315:20 pmHRL - ONT

1 stop5h 50mUnited Airlines

Deal found 5/12

$428

Last-minute flights from Ontario to Harlingen
Discover last-minute flight deals from Ontario to Harlingen. Data last updated May 12, 2025 and is based on user searches.

Wed 5/1410:51 amONT - HRL

1 stop6h 40mAmerican Airlines

Sat 5/247:56 pmHRL - ONT

2 stops14h 58mAmerican Airlines

Deal found 5/12

$513

Sat 5/1710:51 amONT - HRL

1 stop6h 35mAmerican Airlines

Sat 5/247:56 pmHRL - ONT

2 stops14h 58mAmerican Airlines

Deal found 5/12

$513

Tue 5/206:08 amONT - HRL

1 stop5h 16mUnited Airlines

Wed 5/285:20 pmHRL - ONT

1 stop5h 50mUnited Airlines

Deal found 5/11

$397

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Tue 5/27

6:00 am-1:25 pm

1 stop5h 25m

Harlingen Valley Intl

Sat 5/31

5:20 pm-9:10 pm

1 stop5h 50m

$428

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Compare providers for flights from Ontario to Harlingen

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Harlingen in May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Harlingen, Texas flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Ontario-Harlingen, Texas flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to Harlingen

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

What is the cheapest month to book a flight from Ontario to Harlingen, Texas?

Currently, April is the cheapest month in which you can book a flight from Ontario to Harlingen, Texas (average of $267). Flying from Ontario to Harlingen, Texas in July is currently the most expensive (average of $408). 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 Harlingen by month

In terms of precipitation, rainfall in Harlingen, Texas ranges from 1.1 - 5.2 inches per month. September is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Harlingen, Texas when rainfall is around 1.1 in.

Temperature in Harlingen by month

If weather is an important factor for your trip to Harlingen, Texas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 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 Harlingen

United Airlines

7.4

Good

8,724 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

8,724 reviews

United Airlines

7.4

Good

8,724 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 Harlingen, Texas round-trip?
Flying on United Airlines is currently your cheapest option to Harlingen, Texas, with prices starting at $428.
Can I find deals for flights from Ontario to Harlingen that include hotel bookings?
Yes. In addition to deals on Ontario to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Harlingen?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Harlingen.
Can I find deals for business class flights from Ontario to Harlingen?
Yes. Cheapflights offers flight deals from Ontario to Harlingen 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 Harlingen, Texas?
Currently, April is the cheapest month in which you can book a flight from Ontario to Harlingen, Texas (average of $267). Flying from Ontario to Harlingen, Texas in July is currently the most expensive (average of $408). 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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Top airline flying from Ontario to Harlingen

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$174	Average$377	FlexibilityNo cancel fee	On-time71%

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$397+ Cheap flights from Ontario to Harlingen, TX (ONT - HRL)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Harlingen 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 Harlingen

Most accurate provider

Most trusted provider

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Ontario to Harlingen

Cheapest flights from Ontario to HarlingenExplore the most affordable flight options available from Ontario to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2025.

Explore the most affordable flight options available from Ontario to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Ontario to Harlingen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Harlingen in May.

Best time to book a flight from Ontario to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Harlingen

What is the cheapest month to book a flight from Ontario to Harlingen, Texas?

Rainfall in Harlingen by month

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

Temperature in Harlingen by month

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

Reviews of airlines servicing Harlingen

Related info for your journey

Find useful and relevant information for your journey from Ontario to Harlingen. 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 Harlingen, Texas round-trip?

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

How can I find direct flights from Ontario to Harlingen?

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

What is the cheapest month to book a flight from Ontario to Harlingen, Texas?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Harlingen

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

Top airline flying from Ontario to Harlingen

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Travel Smart

Cheapest flights from Ontario to Harlingen
Explore the most affordable flight options available from Ontario to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 12, 2025.