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Harlingen

$249+ Cheap flights from Ontario to Harlingen, TX (ONT - HRL)

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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — HRL
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Ontario to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Harlingen (HRL). 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 agosto 14, 2025.

Round-trip from

$264
(Southwest)

One-way from

$249
(United Airlines)

Popular in

November

Cheapest in

July

Average price

$348
From Ontario to Harlingen Valley Intl
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One-way flight from Ontario to Harlingen Valley Intl
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Highest demand for flights based on searches. 10% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in August 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 agosto 14, 2025.

This Southwest deal was found by Cheapflights users on 8/14. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/1012:45 pmONT - HRL
1 stop6h 40mSouthwest
lun. 9/155:45 amHRL - ONT
1 stop5h 20mSouthwest
Deal found 8/14$264
This United Airlines deal was found by Cheapflights users on 8/12. 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.
mié. 9/246:04 amONT - HRL
1 stop7h 58mUnited Airlines
mié. 10/12:05 pmHRL - ONT
2 stops10h 47mUnited Airlines
Deal found 8/12$363
This United Airlines deal was found by Cheapflights users on 8/13. 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.
mar. 9/96:00 amONT - HRL
2 stops13h 52mUnited Airlines
jue. 9/115:20 pmHRL - ONT
1 stop6h 05mUnited Airlines
Deal found 8/13$375
This United Airlines deal was found by Cheapflights users on 8/14. 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.
mié. 9/106:50 pmONT - HRL
2 stops19h 12mUnited Airlines
lun. 9/155:20 pmHRL - ONT
3 stops29h 13mUnited Airlines
Deal found 8/14$460
This United Airlines deal was found by Cheapflights users on 8/12. 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.
vie. 9/196:04 amONT - HRL
1 stop7h 58mUnited Airlines
dom. 9/215:00 amHRL - ONT
2 stops9h 13mUnited Airlines
Deal found 8/12$494
This United Airlines deal was found by Cheapflights users on 8/14. 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.
mar. 9/166:04 amONT - HRL
1 stop7h 58mUnited Airlines
jue. 10/162:05 pmHRL - ONT
1 stop9h 19mUnited Airlines
Deal found 8/14$747

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Harlingen 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 agosto 14, 2025.
Use the filters below to find and compare flights from Ontario to Harlingen that are best for you.

Fly from

Ontario

Fly to

Harlingen

Route

Depart

Return

Price

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mié. 9/10

12:45 pm-9:25 pm

1 stop6h 40m

Harlingen Valley Intl

lun. 9/15

5:45 am-9:05 am

1 stop5h 20m

$264

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mié. 9/24

6:04 am-4:02 pm

1 stop7h 58m

Harlingen Valley Intl

mié. 10/1

2:05 pm-10:52 pm

2 stops10h 47m

$363

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mar. 9/9

6:00 am-9:52 pm

2 stops13h 52m

Harlingen Valley Intl

jue. 9/11

5:20 pm-9:25 pm

1 stop6h 05m

$375

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mié. 9/10

6:50 pm-4:02 pm

2 stops19h 12m

Harlingen Valley Intl

lun. 9/15

5:20 pm-8:33 pm

3 stops29h 13m

$460

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

vie. 9/19

6:04 am-4:02 pm

1 stop7h 58m

Harlingen Valley Intl

dom. 9/21

5:00 am-12:13 pm

2 stops9h 13m

$494

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mar. 9/16

6:04 am-4:02 pm

1 stop7h 58m

Harlingen Valley Intl

jue. 10/16

2:05 pm-9:24 pm

1 stop9h 19m

$747

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mié. 12/24

6:39 pm-11:13 am

2 stops14h 34m

$249

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

lun. 9/1

6:04 am-4:02 pm

1 stop7h 58m

$250

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mar. 12/23

6:04 am-7:36 pm

1 stop11h 32m

$343

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

lun. 12/22

6:04 am-7:36 pm

1 stop11h 32m

$369

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

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 June is currently the most expensive (average of $381). 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 Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated agosto 14, 2025.
Read through reviews of airlines operating flights from Ontario to Harlingen, such as American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Entertainment

6.9

Crew

8.0

Overall

7.2

Boarding

7.5

Comfort

7.2

Food

6.5

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2025

PIT - DFW

Due to gate changes,we nearly missed our flight. The gate agent reassigned our seats and would NOT give us our assigned seats,but she did honor that same request to the man who arrived after us. Her rudeness and difficulty was not appropriate.

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?

    Flying on American Airlines is currently your cheapest option to Harlingen, Texas, with prices starting at $174.

  • 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 June is currently the most expensive (average of $381). 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 Harlingen

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Top airline flying from Ontario to Harlingen

Discover the top airline that operate flights from Ontario to Harlingen. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$174Average$378FlexibilityNo cancel feeOn-time71%

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