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$235+ 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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

This United Airlines deal was found by Cheapflights users on 11/23. 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.
Sun 12/75:00 pmHRL - ONT
1 stop6h 49mUnited Airlines
Thu 1/16:10 amONT - HRL
1 stop7h 56mUnited Airlines
Deal found 11/23$519
This United Airlines deal was found by Cheapflights users on 11/23. 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.
Sun 12/75:00 pmHRL - ONT
1 stop6h 49mUnited Airlines
Sun 1/46:10 amONT - HRL
1 stop11h 26mUnited Airlines
Deal found 11/23$628
This United Airlines deal was found by Cheapflights users on 11/24. 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.
Fri 12/1912:15 pmHRL - ONT
1 stop11h 37mUnited Airlines
Mon 12/226:04 amONT - HRL
1 stop11h 32mUnited Airlines
Deal found 11/24$732
This United Airlines deal was found by Cheapflights users on 11/24. 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.
Fri 12/265:20 pmHRL - ONT
1 stop6h 32mUnited Airlines
Mon 12/296:04 amONT - HRL
1 stop11h 32mUnited Airlines
Deal found 11/24$783
This United Airlines deal was found by Cheapflights users on 11/23. 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.
Sun 12/285:00 amHRL - ONT
1 stop18h 52mUnited Airlines
Fri 1/26:10 amONT - HRL
1 stop11h 26mUnited Airlines
Deal found 11/23$803
This United Airlines deal was found by Cheapflights users on 11/23. 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.
Fri 12/2612:15 pmHRL - ONT
1 stop11h 37mUnited Airlines
Wed 12/316:04 amONT - HRL
1 stop8h 02mUnited Airlines
Deal found 11/23$818
This United Airlines deal was found by Cheapflights users on 11/26. 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.
Sun 12/285:00 amHRL - ONT
1 stop18h 52mUnited Airlines
Sun 1/46:10 amONT - HRL
1 stop13h 49mUnited Airlines
Deal found 11/26$843
This United Airlines deal was found by Cheapflights users on 11/25. 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.
Mon 12/15:00 pmHRL - ONT
1 stop6h 47mUnited Airlines
Mon 12/86:00 amONT - HRL
1 stop7h 59mUnited Airlines
Deal found 11/25$1,458

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 November 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$327
(United Airlines)

One-way from

$235
(United Airlines)

Popular in

December

Cheapest in

April

Average price

$341
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. 12% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 26, 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 1/17

5:25 pm-9:58 pm

1 stop6h 33m

Ontario

Wed 1/21

8:00 am-4:06 pm

1 stop6h 06m

$327

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 1/17

6:44 pm-10:48 pm

1 stop6h 04m

Ontario

Wed 1/21

7:16 am-2:46 pm

1 stop5h 30m

$327

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 4/28

7:00 am-5:47 pm

2 stops12h 47m

Ontario

Fri 5/1

6:02 am-3:34 pm

1 stop7h 32m

$464

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sun 12/7

5:00 pm-9:49 pm

1 stop6h 49m

Ontario

Thu 1/1

6:10 am-4:06 pm

1 stop7h 56m

$519

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 5/12

2:00 pm-11:06 pm

2 stops11h 06m

Ontario

Fri 5/15

6:02 am-1:14 pm

1 stop5h 12m

$534

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 3/5

5:25 pm-10:36 pm

1 stop7h 11m

$235

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Wed 12/3

5:00 pm-9:49 pm

1 stop6h 49m

$246

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Harlingen, Texas-Ontario flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 $123). Flying from Harlingen, Texas to Ontario in December is currently the most expensive (average of $256). 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 November 26, 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
11,038 reviews

Crew

8.0

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.4

Boarding

7.5

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
11,038 reviews
American Airlines
7.2
Good
11,038 reviews

Crew

8.0

Entertainment

6.9

Overall

7.2

Comfort

7.2

Food

6.4

Boarding

7.5

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?

    United Airlines and American Airlines can get you from Harlingen, Texas to Ontario in just under 6h 04m. Your travel time can differ by up to 29m. Harlingen, Texas and Ontario are separated by a distance of 1305 mi. This flight may include one or multiple stops.

  • 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 $123). Flying from Harlingen, Texas to Ontario in December is currently the most expensive (average of $256). 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 Harlingen to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$224Average$418FlexibilityNo cancel feeOn-time71%

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