$225+ 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 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Dec 4 — Dec 111
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 November 4, 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 November 4, 2026.
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/246:46 pm -
1 stop7h 13m
Tue 12/11:30 pm -
2 stops7h 43m
Deal found 10/31![American Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/44:39 pm -
1 stop7h 20m
Tue 12/85:45 am -
1 stop8h 05m
Deal found 11/2![United Airlines logo]()
$449
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/44:39 pm -
1 stop7h 20m
Mon 12/76:40 pm -
2 stops14h 34m
Deal found 11/2![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/225:25 pm -
1 stop6h 25m
Fri 11/276:00 am -
1 stop8h 01m
Deal found 10/30![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/245:05 am -
2 stops9h 24m
Wed 12/25:45 am -
1 stop5h 40m
Deal found 11/1![United Airlines logo]()
$464
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 November 4, 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 November 4, 2026.
This American Airlines deal was found by Cheapflights users on 10/31. 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 1/2110:35 am -
2 stops13h 40m
Mon 1/2512:45 pm -
1 stop8h 09m
Deal found 10/31![American Airlines logo]()
$379
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/44:39 pm -
1 stop7h 20m
Sun 12/65:45 am -
1 stop8h 05m
Deal found 11/2![United Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 11/4. 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 1/76:35 pm -
1 stop6h 38m
Sun 1/102:23 pm -
1 stop6h 31m
Deal found 11/4![American Airlines logo]()
$443
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/225:25 pm -
1 stop6h 25m
Fri 11/276:00 am -
1 stop8h 01m
Deal found 10/30![United Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 10/31. 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 12/317:21 pm -
1 stop6h 49m
Sun 1/311:59 pm -
1 stop8h 05m
Deal found 10/31![American Airlines logo]()
$488
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/54:39 pm -
1 stop7h 20m
Thu 12/105:00 am -
2 stops28h 14m
Deal found 11/2![United Airlines logo]()
$496
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/76:41 pm -
1 stop6h 16m
Tue 11/102:22 pm -
1 stop7h 09m
Deal found 10/31![American Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/245:05 am -
2 stops14h 51m
Tue 12/15:00 am -
2 stops30h 25m
Deal found 11/4![United Airlines logo]()
$546
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/37:15 am -
2 stops15h 23m
Sat 12/55:00 am -
2 stops8h 50m
Deal found 11/2![United Airlines logo]()
$565
This United Airlines deal was found by Cheapflights users on 11/3. 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 12/12:00 pm -
2 stops21h 38m
Tue 12/85:45 am -
1 stop5h 40m
Deal found 11/3![United Airlines logo]()
$596
Last-minute flights from Harlingen to OntarioDiscover last-minute flight deals from Harlingen to Ontario. Data last updated November 4, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Ontario. Data last updated November 4, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/225:25 pm -
1 stop6h 25m
Fri 11/276:00 am -
1 stop8h 01m
Deal found 10/30![United Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 10/31. 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 11/246:46 pm -
1 stop7h 13m
Tue 12/11:30 pm -
2 stops7h 43m
Deal found 10/31![American Airlines logo]()
$441
This United Airlines deal was found by Cheapflights users on 11/1. 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 11/245:05 am -
2 stops9h 24m
Wed 12/25:45 am -
1 stop5h 40m
Deal found 11/1![United Airlines logo]()
$464
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/44:39 pm -
1 stop7h 20m
Wed 12/95:45 am -
1 stop8h 05m
Deal found 11/2![United Airlines logo]()
$449
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 November 4, 2026.
Search for one-way flight options from Harlingen to Ontario. Find affordable one-way fares based on user searches. Data last updated November 4, 2026.
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 1/274:35 pm -
1 stop7h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$225
This Delta deal was found by Cheapflights users on 10/31. 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.
Wed 11/252:18 pm -
2 stops11h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Delta logo]()
$227
This Southwest deal was found by Cheapflights users on 10/31. 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 11/255:40 am -
1 stop5h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Southwest logo]()
$250
This Kiwi.com deal was found by Cheapflights users on 10/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2512:26 pm -
3 stops37h 48m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$345
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/2810:50 am -
3 stops25h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$351
This United Airlines deal was found by Cheapflights users on 11/1. 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 12/64:39 pm -
1 stop7h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![United Airlines logo]()
$364
This United Airlines deal was found by Cheapflights users on 10/30. 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 11/205:25 pm -
1 stop6h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![United Airlines logo]()
$479
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/287:15 am -
1 stop16h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$509
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/285:05 am -
1 stop18h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$575
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 November 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $351 (American Airlines) |
One-way from | $225 (United Airlines) |
Popular in | December |
Cheapest in | January |
Average price | $338 |
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 November 4, 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
Wed 1/27
4:35 pm-10:15 pm
1 stop7h 40m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$225
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Tue 1/26
4:35 pm-10:15 pm
1 stop7h 40m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$225
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Wed 11/25
12:26 pm-12:14 am
3 stops37h 48m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$345
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Mon 12/28
10:50 am-10:47 am
3 stops25h 57m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$351
Quickest round-trip
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Sun 12/6
4:39 pm-9:59 pm
1 stop7h 20m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$364
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Thu 1/21
10:35 am-10:15 pm
2 stops13h 40m
Ontario
Mon 1/25
12:45 pm-10:54 pm
1 stop8h 09m
$379
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Thu 1/7
6:35 pm-11:13 pm
1 stop6h 38m
Ontario
Sun 1/10
2:23 pm-10:54 pm
1 stop6h 31m
$443
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Fri 12/4
4:39 pm-9:59 pm
1 stop7h 20m
Ontario
Sun 12/6
5:45 am-3:50 pm
1 stop8h 05m
$459
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Sun 11/22
5:25 pm-9:50 pm
1 stop6h 25m
Ontario
Fri 11/27
6:00 am-4:01 pm
1 stop8h 01m
$459
HarlingenOntario
HRL Harlingen Valley Intl - ONT Ontario
HRLONT
Harlingen Valley Intl
Thu 12/31
7:21 pm-12:10 am
1 stop6h 49m
Ontario
Sun 1/3
11:59 pm-10:04 am
1 stop8h 05m
$488
Showing 1-10 of 16 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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy2 stars | 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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