$180+ 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 7/13. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — ONT
Jun 2 — Jun 91
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
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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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Best
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One-way
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 May 3, 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 May 3, 2026.
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 8/272:00 pm
HRL
- ONT
2 stops10h 58m
United Airlines
Tue 9/15:45 am
ONT
- HRL
1 stop7h 49m
United Airlines
Deal found 4/30![United Airlines logo]()
$290
This American Airlines deal was found by Cheapflights users on 5/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:04 pm
HRL
- ONT
1 stop5h 55m
American Airlines
Sat 5/3011:59 pm
ONT
- HRL
1 stop8h 14m
American Airlines
Deal found 5/2![American Airlines logo]()
$352
This United Airlines deal was found by Cheapflights users on 5/2. 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 9/195:16 pm
HRL
- ONT
1 stop6h 43m
United Airlines
Tue 9/225:45 am
ONT
- HRL
1 stop7h 49m
United Airlines
Deal found 5/2![United Airlines logo]()
$398
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 May 3, 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 May 3, 2026.
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Thu 8/272:00 pm
HRL
- ONT
2 stops10h 58m
United Airlines
Tue 9/15:45 am
ONT
- HRL
1 stop7h 49m
United Airlines
Deal found 4/30![United Airlines logo]()
$290
This Southwest deal was found by Cheapflights users on 4/28. 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.
Sat 6/275:10 pm
HRL
- ONT
2 stops6h 50m
Southwest
Fri 7/2412:45 pm
ONT
- HRL
2 stops8h 55m
Southwest
Deal found 4/28![Southwest logo]()
$448
This United Airlines deal was found by Cheapflights users on 5/2. 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 9/195:16 pm
HRL
- ONT
1 stop6h 43m
United Airlines
Tue 9/225:45 am
ONT
- HRL
1 stop7h 49m
United Airlines
Deal found 5/2![United Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 5/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1612:10 pm
HRL
- ONT
2 stops10h 05m
Southwest
Tue 5/191:40 pm
ONT
- HRL
1 stop5h 15m
Southwest
Deal found 5/2![Southwest logo]()
$494
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Wed 6/32:05 pm
HRL
- ONT
2 stops10h 32m
United Airlines
Sat 6/65:45 am
ONT
- HRL
1 stop8h 14m
United Airlines
Deal found 5/1![United Airlines logo]()
$482
This United Airlines deal was found by Cheapflights users on 5/3. 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.
Thu 5/285:20 pm
HRL
- ONT
1 stop6h 35m
United Airlines
Mon 6/15:45 am
ONT
- HRL
1 stop8h 14m
United Airlines
Deal found 5/3![United Airlines logo]()
$489
Last-minute flights from Harlingen to OntarioDiscover last-minute flight deals from Harlingen to Ontario. Data last updated May 3, 2026 and is based on user searches.
Discover last-minute flight deals from Harlingen to Ontario. Data last updated May 3, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:53 pm
HRL
- ONT
1 stop5h 53m
American Airlines
Mon 5/1111:59 pm
ONT
- HRL
1 stop8h 18m
American Airlines
Deal found 4/30![American Airlines logo]()
$462
This American Airlines deal was found by Cheapflights users on 5/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:04 pm
HRL
- ONT
1 stop5h 55m
American Airlines
Sat 5/3011:59 pm
ONT
- HRL
1 stop8h 14m
American Airlines
Deal found 5/2![American Airlines logo]()
$352
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 May 3, 2026.
Search for one-way flight options from Harlingen to Ontario. Find affordable one-way fares based on user searches. Data last updated May 3, 2026.
This American Airlines deal was found by Cheapflights users on 5/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/138:04 pm
HRL
- ONT
1 stop5h 55m
American Airlines
Deal found 5/2![American Airlines logo]()
$180
This Southwest deal was found by Cheapflights users on 5/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/135:35 pm
HRL
- ONT
2 stops7h 55m
Southwest
Deal found 5/2![Southwest logo]()
$205
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Thu 5/285:20 pm
HRL
- ONT
1 stop6h 35m
United Airlines
Deal found 5/1![United Airlines logo]()
$215
This American Airlines deal was found by Cheapflights users on 5/1. 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 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
Deal found 5/1![American Airlines logo]()
$225
This Southwest deal was found by Cheapflights users on 5/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/124:35 pm
HRL
- ONT
1 stop6h 15m
Southwest
Deal found 5/2![Southwest logo]()
$230
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/298:04 pm
HRL
- ONT
1 stop5h 55m
American Airlines
Deal found 5/1![American Airlines logo]()
$234
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Fri 5/89:20 am
HRL
- ONT
2 stops10h 32m
United Airlines
Deal found 5/1![United Airlines logo]()
$239
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:04 pm
HRL
- ONT
1 stop5h 55m
American Airlines
Deal found 5/1![American Airlines logo]()
$264
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/244:57 pm
HRL
- ONT
1 stop7h 42m
American Airlines
Deal found 5/1![American Airlines logo]()
$265
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Mon 6/225:20 pm
HRL
- ONT
1 stop6h 35m
United Airlines
Deal found 5/1![United Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 5/2. 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.
Mon 7/135:20 pm
HRL
- ONT
1 stop6h 35m
United Airlines
Deal found 5/2![United Airlines logo]()
$310
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 3, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $290 (United Airlines) |
One-way from | $180 (American Airlines) |
Popular in | December |
Cheapest in | September |
Average price | $282 |
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 3, 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 - ONT
HRLONT
Harlingen Valley Intl
Thu 8/27
2:00 pm-10:58 pm
2 stops10h 58m
Ontario
Tue 9/1
5:45 am-3:34 pm
1 stop7h 49m
$290
Quickest round-trip
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Sat 9/19
5:16 pm-9:59 pm
1 stop6h 43m
Ontario
Tue 9/22
5:45 am-3:34 pm
1 stop7h 49m
$398
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Sat 6/27
5:10 pm-10:00 pm
2 stops6h 50m
Ontario
Fri 7/24
12:45 pm-11:40 pm
2 stops8h 55m
$448
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Wed 6/3
2:05 pm-10:37 pm
2 stops10h 32m
Ontario
Sat 6/6
5:45 am-3:59 pm
1 stop8h 14m
$482
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Thu 5/28
5:20 pm-9:55 pm
1 stop6h 35m
Ontario
Mon 6/1
5:45 am-3:59 pm
1 stop8h 14m
$489
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Sat 5/16
12:10 pm-8:15 pm
2 stops10h 05m
Ontario
Tue 5/19
1:40 pm-8:55 pm
1 stop5h 15m
$494
Cheapest one-way
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Mon 7/13
5:35 pm-11:30 pm
2 stops7h 55m
$205
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Thu 5/28
5:20 pm-9:55 pm
1 stop6h 35m
$215
Quickest one-way
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Sun 7/12
4:35 pm-8:50 pm
1 stop6h 15m
$230
HarlingenOntario
HRL - ONT
HRLONT
Harlingen Valley Intl
Fri 5/8
9:20 am-5:52 pm
2 stops10h 32m
$239
Showing 1-10 of 13 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 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.
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 May 3, 2026.
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.
Food
6.4
Overall
7.1
Entertainment
6.9
Boarding
7.5
Crew
7.9
Comfort
7.2
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
Food
6.4
Overall
7.1
Entertainment
6.9
Boarding
7.5
Crew
7.9
Comfort
7.2
Reviews
1 / 20
2.0
MediocreAnonymous,Apr 2026
DFW - BDL
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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Alternative routes for Harlingen to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Harlingen to Ontario by cabin class
Find flights from Harlingen to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 3, 2026.
Harlingen and Ontario flights
Browse other Harlingen and Ontario flight options. Last updated on May 3, 2026.
Other flights from Harlingen
Browse through other flights departing from Harlingen. Flights are based on user searches made on Cheapflights and were last updated on May 3, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 May 3, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$311 | Average$378 | FlexibilityNo cancel fee | On-time71% |