$126+ Cheap flights from Harlingen 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Oct 16 — Oct 231
Round-trip
1 adult, Economy
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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
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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 September 16, 2026.
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 September 16, 2026.
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:40 am -
1 stop6h 50m
Mon 11/21:20 pm -
2 stops8h 10m
Deal found 9/13![Southwest logo]()
$279
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/105:25 pm -
1 stop6h 15m
Wed 11/116:00 am -
1 stop8h 01m
Deal found 9/15![United Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop5h 45m
Mon 10/1911:59 pm -
1 stop8h 09m
Deal found 9/13![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/106:42 pm -
1 stop7h 10m
Sat 10/1711:59 pm -
1 stop8h 09m
Deal found 9/11![American Airlines logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/25:18 pm -
1 stop6h 41m
Sat 10/176:00 am -
1 stop7h 59m
Deal found 9/11![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/75:05 am -
2 stops12h 28m
Sun 11/226:00 am -
1 stop8h 01m
Deal found 9/15![United Airlines logo]()
$421
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:51 am -
1 stop7h 56m
Sat 10/32:22 pm -
1 stop6h 26m
Deal found 9/14![American Airlines logo]()
$429
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/305:51 am -
1 stop5h 38m
Mon 10/511:59 pm -
1 stop8h 09m
Deal found 9/16![American Airlines logo]()
$430
Best flights from Harlingen to OntarioDiscover 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 September 16, 2026.
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 September 16, 2026.
This United Airlines deal was found by Cheapflights users on 9/15. 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 11/105:05 am -
2 stops12h 28m
Wed 11/116:00 am -
1 stop8h 01m
Deal found 9/15![United Airlines logo]()
$318
This American Airlines deal was found by Cheapflights users on 9/11. 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 1/215:40 am -
1 stop6h 10m
Mon 1/2512:44 pm -
1 stop8h 10m
Deal found 9/11![American Airlines logo]()
$358
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/25:50 am -
1 stop5h 25m
Mon 11/212:40 pm -
1 stop8h 50m
Deal found 9/13![Southwest logo]()
$400
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop5h 45m
Mon 10/1911:59 pm -
1 stop8h 09m
Deal found 9/13![American Airlines logo]()
$360
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/25:18 pm -
1 stop6h 41m
Sat 10/176:00 am -
1 stop7h 59m
Deal found 9/11![United Airlines logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Thu 1/75:16 pm -
1 stop6h 24m
Sun 1/106:00 am -
1 stop7h 34m
Deal found 9/15![United Airlines logo]()
$395
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:51 am -
1 stop7h 56m
Sat 10/32:22 pm -
1 stop6h 26m
Deal found 9/14![American Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/11. 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 1/115:16 pm -
1 stop6h 24m
Thu 1/146:00 am -
1 stop7h 34m
Deal found 9/11![United Airlines logo]()
$449
Last-minute flights from Harlingen to OntarioDiscover last-minute flight deals from Harlingen to Ontario. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Ontario. Data last updated September 16, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/16. 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.
Sun 9/278:00 pm -
1 stop5h 36m
Mon 10/511:59 pm -
1 stop8h 09m
Deal found 9/16![American Airlines logo]()
$465
This American Airlines deal was found by Cheapflights users on 9/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/295:51 am -
1 stop7h 56m
Sat 10/32:22 pm -
1 stop6h 26m
Deal found 9/14![American Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/14. 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.
Tue 9/295:05 am -
2 stops12h 17m
Sat 10/36:00 am -
1 stop7h 59m
Deal found 9/14![United Airlines logo]()
$434
This Southwest deal was found by Cheapflights users on 9/14. 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.
Tue 9/294:25 pm -
2 stops6h 35m
Sat 10/35:45 am -
2 stops7h 55m
Deal found 9/14![Southwest logo]()
$439
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/295:51 am -
2 stops8h 15m
Mon 10/511:59 pm -
1 stop8h 09m
Deal found 9/16![American Airlines logo]()
$470
This American Airlines deal was found by Cheapflights users on 9/16. 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 9/305:51 am -
1 stop5h 38m
Mon 10/511:59 pm -
1 stop8h 09m
Deal found 9/16![American Airlines logo]()
$430
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/25:18 pm -
1 stop6h 41m
Sat 10/176:00 am -
1 stop7h 59m
Deal found 9/11![United Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/106:42 pm -
1 stop7h 10m
Sat 10/1711:59 pm -
1 stop8h 09m
Deal found 9/11![American Airlines logo]()
$386
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop5h 45m
Mon 10/1911:59 pm -
1 stop8h 09m
Deal found 9/13![American Airlines logo]()
$360
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:50 am -
1 stop5h 45m
Sun 10/1811:59 pm -
1 stop8h 09m
Deal found 9/12![American Airlines logo]()
$455
One-way flights from Harlingen to OntarioSearch for one-way flight options from Harlingen to Ontario. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
Search for one-way flight options from Harlingen to Ontario. Find affordable one-way fares based on user searches. Data last updated September 16, 2026.
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/26:40 am -
1 stop6h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$126
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:13 pm -
2 stops9h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Delta logo]()
$175
This United Airlines deal was found by Cheapflights users on 9/11. 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 10/25:18 pm -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$180
This American Airlines deal was found by Cheapflights users on 9/13. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/66:42 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![American Airlines logo]()
$215
This American Airlines deal was found by Cheapflights users on 9/11. 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 10/106:42 pm -
1 stop7h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![American Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 9/11. 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 2/1312:10 pm -
2 stops12h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![United Airlines logo]()
$220
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Mon 10/55:18 pm -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$225
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Tue 10/65:05 am -
2 stops9h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![United Airlines logo]()
$230
This Southwest deal was found by Cheapflights users on 9/13. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/16:40 am -
1 stop6h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$239
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 September 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $279 (Southwest) |
One-way from | $126 (Southwest) |
Popular in | December |
Cheapest in | January |
Average price | $426 |
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 7,457,451 searches. Data last updated September 16, 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
Cheapest round-trip
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Mon 11/2
6:40 am-11:30 am
1 stop6h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$126
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Fri 10/2
2:00 pm-10:51 pm
2 stops10h 51m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$185
Quickest round-trip
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Sat 2/13
5:16 pm-9:21 pm
1 stop6h 05m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$215
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Sun 11/1
6:40 am-11:30 am
1 stop6h 50m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$239
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Fri 9/25
1:55 pm-8:25 pm
1 stop8h 30m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$250
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Sat 10/3
5:05 am-3:22 pm
2 stops12h 17m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$265
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Tue 11/10
5:05 am-3:33 pm
2 stops12h 28m
Ontario
Wed 11/11
6:00 am-4:01 pm
1 stop8h 01m
$318
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Thu 1/21
5:40 am-9:50 am
1 stop6h 10m
Ontario
Mon 1/25
12:44 pm-10:54 pm
1 stop8h 10m
$358
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Mon 10/12
5:50 am-9:35 am
1 stop5h 45m
Ontario
Mon 10/19
11:59 pm-10:08 am
1 stop8h 09m
$360
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Fri 10/2
5:18 pm-9:59 pm
1 stop6h 41m
Ontario
Sat 10/17
6:00 am-3:59 pm
1 stop7h 59m
$394
Showing 1-10 of 14 resultsSorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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.
HRL-ONT
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.
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