HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$177+ Cheap flights from Harlingen 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Jun 28 — Jul 51
Sun 6/28
Sun 7/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Harlingen to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 May 29, 2026.

This American Airlines deal was found by Cheapflights users on 5/27. 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.
Thu 6/118:04 pm
HRL
-
ONT
1 stop5h 55m
American Airlines
Mon 6/157:13 pm
ONT
-
HRL
2 stops13h 00m
American Airlines
Deal found 5/27$344
This Southwest deal was found by Cheapflights users on 5/28. 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.
Fri 11/136:40 am
HRL
-
ONT
1 stop6h 50m
Southwest
Mon 11/167:50 am
ONT
-
HRL
1 stop10h 45m
Southwest
Deal found 5/28$389
This American Airlines deal was found by Cheapflights users on 5/27. 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.
Tue 6/238:04 pm
HRL
-
ONT
1 stop5h 55m
American Airlines
Tue 6/307:13 pm
ONT
-
HRL
2 stops13h 00m
American Airlines
Deal found 5/27$399
This Southwest deal was found by Cheapflights users on 5/29. 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 7/85:00 pm
HRL
-
ONT
1 stop7h 35m
Southwest
Wed 7/221:05 pm
ONT
-
HRL
1 stop8h 00m
Southwest
Deal found 5/29$404
This American Airlines deal was found by Cheapflights users on 5/28. 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.
Tue 6/308:04 pm
HRL
-
ONT
1 stop5h 55m
American Airlines
Sat 7/412:35 pm
ONT
-
HRL
1 stop5h 37m
American Airlines
Deal found 5/28$440
This Southwest deal was found by Cheapflights users on 5/27. 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 6/235:00 pm
HRL
-
ONT
1 stop7h 35m
Southwest
Tue 6/309:45 am
ONT
-
HRL
1 stop6h 15m
Southwest
Deal found 5/27$444
This United Airlines deal was found by Cheapflights users on 5/24. 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.
Tue 10/275:16 pm
HRL
-
ONT
1 stop6h 05m
United Airlines
Wed 10/286:53 pm
ONT
-
HRL
2 stops14h 06m
United Airlines
Deal found 5/24$457

Find 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 May 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$344
(American Airlines)

One-way from

$177
(American Airlines)

Popular in

December

Cheapest in

September

Average price

$293
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. 5% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 29, 2026.
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

Cheapest round-trip

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 11/13

5:50 am-10:50 am

2 stops7h 00m

Ontario

Mon 11/16

12:50 pm-9:45 pm

2 stops6h 55m

$394

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 6/23

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Tue 6/30

7:13 pm-10:13 am

2 stops13h 00m

$399
Quickest round-trip

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 6/23

5:00 pm-10:35 pm

1 stop7h 35m

Ontario

Tue 6/30

9:45 am-6:00 pm

1 stop6h 15m

$444

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 6/11

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Mon 6/15

11:59 pm-10:13 am

1 stop8h 14m

$445

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 10/27

5:16 pm-9:21 pm

1 stop6h 05m

Ontario

Wed 10/28

6:53 pm-10:59 am

2 stops14h 06m

$480

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 6/13

5:20 pm-9:55 pm

1 stop6h 35m

Ontario

Wed 6/17

5:45 am-3:59 pm

1 stop8h 14m

$538

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 11/5

5:16 pm-9:21 pm

1 stop6h 05m

Ontario

Tue 11/10

5:00 am-7:32 pm

2 stops12h 32m

$550
Cheapest one-way
Quickest one-way

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 6/23

8:04 pm-11:59 pm

1 stop5h 55m

$177

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Wed 6/10

8:04 pm-11:59 pm

1 stop5h 55m

$184

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 6/12

8:04 pm-11:59 pm

1 stop5h 55m

$209

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/27

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Harlingen-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Harlingen-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Harlingen-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-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.

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 to Ontario?

    A quick flight from Harlingen to Ontario can take about 5h 55m. Southwest provides one of the quickest options available for as low as $399. There are 1305 mi between Harlingen and Ontario. This flight may include one or multiple stops.

  • 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.

See more FAQs

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.
Dallas/Fort Worth to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
Hobby to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
George Bush Intcntl to Las Vegas flights
Hobby to Los Angeles flights
Dallas/Fort Worth to Ontario flights
George Bush Intcntl to Los Angeles flights
Dallas/Fort Worth to San Diego flights
Austin to Los Angeles flights
Austin to Las Vegas flights
San Antonio to Las Vegas flights
Dallas/Fort Worth to Santa Ana flights
Love Field to Las Vegas flights
Hobby to Ontario flights
George Bush Intcntl to Ontario flights
Hobby to San Diego flights
San Antonio to Los Angeles flights
Love Field to Los Angeles flights
Hobby to San Francisco flights
George Bush Intcntl to San Francisco flights
George Bush Intcntl to San Diego flights
Love Field to San Francisco flights
Dallas/Fort Worth to San Jose flights
Dallas/Fort Worth to Sacramento flights
Austin to San Francisco flights
Austin to San Diego flights
Dallas/Fort Worth to Burbank flights
Hobby to Santa Ana flights
Dallas/Fort Worth to Reno flights
El Paso to Las Vegas flights
Austin to Ontario flights
George Bush Intcntl to Santa Ana flights
Dallas/Fort Worth to Oakland flights
Austin to Santa Ana flights
Austin to San Jose flights
Love Field to San Diego flights
Hobby to Sacramento flights
Hobby to San Jose flights
Dallas/Fort Worth to Long Beach flights
San Antonio to Ontario flights
George Bush Intcntl to Sacramento flights
San Antonio to San Diego flights
Love Field to Sacramento flights
Love Field to Ontario flights
El Paso to Los Angeles flights
Love Field to Santa Ana flights
George Bush Intcntl to San Jose flights
San Antonio to San Francisco flights
Hobby to Reno flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights