What are the cheapest airlines flying from Harlingen, Texas to Ontario round-trip?

Cheapflights users have booked flights from Harlingen, Texas to Ontario round-trip from $280. Other airlines that can offer you cheap pricing are American Airlines, from $290, and United Airlines, from $418.

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

Travelers seeking maximum savings on their Harlingen, Texas to Ontario 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 Harlingen, Texas to Ontario?

Leaving on a Saturday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 48% on the overall cost on flights from Harlingen, Texas to Ontario.

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

April can be a great time to fly to Ontario from Harlingen, Texas with a flight ticket averaging about $342. Cheapflights users have found deals in the month of April for as cheap as $217. The most expensive prices can be found in the month of December.

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

It’s typically best to fly out from Harlingen, Texas to Ontario in the morning. Doing so could potentially save you 17% on the flight price compared to flying at noon, which is usually more expensive.

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

Most trusted provider : When it comes to deals on Harlingen, Texas-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 Harlingen, Texas-Ontario 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 Harlingen to Ontario that include hotel bookings?

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

How can I find direct flights from Harlingen to Ontario?

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

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

Yes. Cheapflights offers flight deals from Harlingen 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.

$159+ Flights from Harlingen, TX to Ontario

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1. Tell us where you want to go

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Cheap flight deals from Harlingen to Ontario

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$280 (Southwest)
One-way from	$159 (United Airlines)
Popular in	December
Cheapest in	April
Average price	$262

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

Search Deals

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

Search Deals

From Harlingen Valley Intl to Ontario

Search Deals

One-way flight from Harlingen Valley Intl to Ontario

Search Deals

Highest demand for flights based on searches. 7% potential increase in price ($29 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).

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Average for round-trip flights in March 2025

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Find flight deals from Harlingen to Ontario

Cheapest flights from Harlingen to Ontario
Explore the most affordable flight options available from Harlingen to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Tue 4/86:10 amHRL - ONT

1 stop6h 05mSouthwest

Wed 4/301:15 pmONT - HRL

1 stop7h 45mSouthwest

Deal found 3/27

$280

Tue 4/84:32 pmHRL - ONT

2 stops7h 26mAmerican Airlines

Wed 4/3012:50 pmONT - HRL

2 stops9h 09mAmerican Airlines

Deal found 3/27

$290

Fri 4/185:34 pmHRL - ONT

1 stop6h 24mUnited Airlines

Sun 4/206:10 amONT - HRL

1 stop5h 18mUnited Airlines

Deal found 3/27

$418

Fri 4/182:41 pmHRL - ONT

2 stops11h 00mDelta

Sun 4/206:00 amONT - HRL

2 stops8h 48mDelta

Deal found 3/27

$776

Best flights from Harlingen to Ontario
Discover carefully curated flight deals from Harlingen to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 28, 2025.

Tue 4/86:10 amHRL - ONT

1 stop6h 05mSouthwest

Wed 4/301:15 pmONT - HRL

1 stop7h 45mSouthwest

Deal found 3/27

$280

Tue 4/84:32 pmHRL - ONT

2 stops7h 26mAmerican Airlines

Wed 4/3012:50 pmONT - HRL

2 stops9h 09mAmerican Airlines

Deal found 3/27

$290

Fri 4/185:34 pmHRL - ONT

1 stop6h 24mUnited Airlines

Sun 4/206:10 amONT - HRL

1 stop5h 18mUnited Airlines

Deal found 3/27

$418

Fri 4/182:41 pmHRL - ONT

2 stops11h 00mDelta

Sun 4/206:00 amONT - HRL

2 stops8h 48mDelta

Deal found 3/27

$776

Last-minute flights from Harlingen to Ontario
Discover last-minute flight deals from Harlingen to Ontario. Data last updated March 28, 2025 and is based on user searches.

Wed 4/212:10 pmHRL - ONT

2 stops12h 45mUnited Airlines

Wed 4/96:10 amONT - HRL

1 stop5h 18mUnited Airlines

Deal found 3/28

$570

Tue 4/86:10 amHRL - ONT

1 stop6h 05mSouthwest

Wed 4/301:15 pmONT - HRL

1 stop7h 45mSouthwest

Deal found 3/27

$280

Tue 4/84:32 pmHRL - ONT

2 stops7h 26mAmerican Airlines

Wed 4/3012:50 pmONT - HRL

2 stops9h 09mAmerican Airlines

Deal found 3/27

$290

Fri 4/185:34 pmHRL - ONT

1 stop6h 24mUnited Airlines

Sun 4/206:10 amONT - HRL

1 stop5h 18mUnited Airlines

Deal found 3/27

$418

Fri 4/182:41 pmHRL - ONT

2 stops11h 00mDelta

Sun 4/206:00 amONT - HRL

2 stops8h 48mDelta

Deal found 3/27

$776

One-way flights from Harlingen to Ontario
Search for one-way flight options from Harlingen to Ontario. Find affordable one-way fares based on user searches. Data last updated March 28, 2025.

Sat 5/245:20 pmHRL - ONT

1 stop5h 50mUnited Airlines

Deal found 3/26

$159

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 4/8

6:10 am-10:15 am

1 stop6h 05m

Ontario

Wed 4/30

1:15 pm-11:00 pm

1 stop7h 45m

$280

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 4/8

4:32 pm-9:58 pm

2 stops7h 26m

Ontario

Wed 4/30

12:50 pm-11:59 pm

2 stops9h 09m

$290

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 4/18

5:34 pm-9:58 pm

1 stop6h 24m

Ontario

Sun 4/20

6:10 am-1:28 pm

1 stop5h 18m

$418

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 4/18

2:41 pm-11:41 pm

2 stops11h 00m

Ontario

Sun 4/20

6:00 am-4:48 pm

2 stops8h 48m

$776

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 5/24

5:20 pm-9:10 pm

1 stop5h 50m

$159

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Compare providers for flights from Harlingen to Ontario

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 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 Harlingen, Texas-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen, Texas-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen, Texas-Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Harlingen, Texas-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub 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 Harlingen, Texas-Ontario 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 Harlingen to Ontario

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

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

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Ontario (average of $246). Flying from Harlingen, Texas to Ontario in March is currently the most expensive (average of $326). 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 Ontario by month

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

If weather is an important factor for your trip to Ontario, 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 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,896 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,603 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

American Airlines

7.2

Good

10,000 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

What are the cheapest airlines flying from Harlingen, Texas to Ontario round-trip?
Cheapflights users have booked flights from Harlingen, Texas to Ontario round-trip from $280. Other airlines that can offer you cheap pricing are American Airlines, from $290, and United Airlines, from $418.
Can I find deals for flights from Harlingen to Ontario that include hotel bookings?
Yes. In addition to deals on Harlingen to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Harlingen to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Ontario.
Can I find deals for business class flights from Harlingen to Ontario?
Yes. Cheapflights offers flight deals from Harlingen 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 Harlingen, Texas to Ontario?
Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Ontario (average of $246). Flying from Harlingen, Texas to Ontario in March is currently the most expensive (average of $326). 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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Other flights to Ontario

Top 2 airlines flying from Harlingen to Ontario

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$224	Average$422	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$269	Average$294	FlexibilityNo cancel fee	On-time63%

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$159+ Cheap flights from Harlingen, TX to Ontario (HRL - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/24. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Harlingen to Ontario with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Harlingen to Ontario

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Harlingen to Ontario

Cheapest flights from Harlingen to OntarioExplore the most affordable flight options available from Harlingen to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Explore the most affordable flight options available from Harlingen to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Harlingen to Ontario

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 Harlingen to Ontario in March.

Best time to book a flight from Harlingen to Ontario

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

Cheapflights Insights

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

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

Rainfall in Ontario by month

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

Temperature in Ontario by month

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

Reviews of airlines servicing Ontario

Related info for your journey

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

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

How can I find direct flights from Harlingen to Ontario?

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

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

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 Harlingen to Ontario

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

Top 2 airlines flying from Harlingen to Ontario

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Cheapest flights from Harlingen to Ontario
Explore the most affordable flight options available from Harlingen to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.