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$289+ Cheap flights from Harlingen, TX to Ontario (HRL - ONT)

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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
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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 October 23, 2025.

This American Airlines deal was found by Cheapflights users on 10/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:10 pmHRL - ONT
1 stop6h 18mAmerican Airlines
Sat 12/133:04 pmONT - HRL
1 stop6h 07mAmerican Airlines
Deal found 10/22$289
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sat 12/65:03 pmHRL - ONT
1 stop6h 46mUnited Airlines
Sat 12/136:00 amONT - HRL
1 stop11h 50mUnited Airlines
Deal found 10/22$379
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:40 amHRL - ONT
1 stop6h 17mAmerican Airlines
Fri 11/2111:59 pmONT - HRL
1 stop7h 44mAmerican Airlines
Deal found 10/21$443
This United Airlines deal was found by Cheapflights users on 10/21. 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.
Tue 11/185:00 amHRL - ONT
2 stops9h 31mUnited Airlines
Tue 11/256:05 amONT - HRL
1 stop7h 54mUnited Airlines
Deal found 10/21$449
This Southwest deal was found by Cheapflights users on 10/22. 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.
Tue 11/255:00 amHRL - ONT
1 stop11h 50mSouthwest
Sat 11/298:05 amONT - HRL
1 stop10h 05mSouthwest
Deal found 10/22$460
This Southwest deal was found by Cheapflights users on 10/21. 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.
Wed 11/127:30 amHRL - ONT
2 stops13h 45mSouthwest
Fri 11/2110:35 amONT - HRL
1 stop5h 15mSouthwest
Deal found 10/21$477

Cheap flight deals from Harlingen to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Harlingen (HRL) to Ontario (ONT). 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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$289
(American Airlines)

Popular in

December

Cheapest in

April

Average price

$261
Provider with most accurate pricing for Harlingen Valley Intl-Ontario flight deals.
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Provider most trusted by Cheapflights users for Harlingen Valley Intl-Ontario flights.
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From Harlingen Valley Intl to Ontario
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($62 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 October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Ontario 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 October 23, 2025.
Use the filters below to find and compare flights from Harlingen to Ontario that are best for you.

Fly from

Harlingen

Fly to

Ontario

Route

Depart

Return

Price

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 12/6

6:10 pm-10:28 pm

1 stop6h 18m

Ontario

Sat 12/13

12:55 pm-11:11 pm

2 stops8h 16m

$294

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 3/3

8:00 pm-11:43 pm

1 stop5h 43m

Ontario

Wed 3/4

3:05 pm-12:01 am

1 stop6h 56m

$321

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 2/27

9:20 am-9:59 pm

1 stop14h 39m

Ontario

Sun 3/1

6:00 am-4:04 pm

1 stop8h 04m

$442

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 12/6

5:03 pm-9:49 pm

1 stop6h 46m

Ontario

Mon 12/8

6:00 am-7:49 pm

1 stop11h 49m

$443

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Wed 11/12

5:40 am-9:57 am

1 stop6h 17m

Ontario

Fri 11/21

11:59 pm-9:43 am

1 stop7h 44m

$443

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 11/18

5:00 am-12:31 pm

2 stops9h 31m

Ontario

Tue 11/25

6:05 am-3:59 pm

1 stop7h 54m

$449

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Mon 12/1

5:00 pm-9:47 pm

1 stop6h 47m

$295

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 12/2

10:13 am-2:04 pm

1 stop5h 51m

$330

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sun 11/30

5:00 pm-1:22 am

2 stops10h 22m

$990

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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, July is the cheapest month in which you can book a flight from Harlingen, Texas to Ontario (average of $124). Flying from Harlingen, Texas to Ontario in January is currently the most expensive (average of $260). 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 Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated October 23, 2025.
Peruse reviews from past customers who have flown with American Airlines from Harlingen to Ontario to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,033 reviews

Overall

7.2

Crew

8.0

Comfort

7.2

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation
American Airlines
7.2
Good
11,033 reviews
American Airlines
7.2
Good
11,033 reviews

Overall

7.2

Crew

8.0

Comfort

7.2

Boarding

7.5

Food

6.4

Entertainment

6.9

Reviews

1 / 20
6.0
Good

sheila,Mar 2025

DFW - MSP

We were delayed for 3 hours with no real reason or offer for compensation

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.

  • How long is the flight from Harlingen, Texas to Ontario?

    American Airlines can get you from Harlingen, Texas to Ontario in just under 6h 18m. Your travel time can differ by up to . Harlingen, Texas and Ontario are separated by a distance of 1305 mi.

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

    Cheapflights users have booked flights from Harlingen, Texas to Ontario round-trip from $224.

  • 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, July is the cheapest month in which you can book a flight from Harlingen, Texas to Ontario (average of $124). Flying from Harlingen, Texas to Ontario in January is currently the most expensive (average of $260). 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 Harlingen to Ontario

Discover the top airline that operate flights from Harlingen to Ontario. 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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$224Average$418FlexibilityNo cancel feeOn-time71%

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