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$410+ Cheap flights from Harlingen, TX (HRL) to Ontario

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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — YYZ
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
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 October 29, 2025.

This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/278:11 pmHRL - YUL
1 stop18h 03mAmerican Airlines
Wed 1/73:52 pmYUL - HRL
2 stops19h 44mAmerican Airlines
Deal found 10/26$686
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/225:00 pmHRL - YUL
2 stops13h 45mUnited Airlines
Wed 11/268:00 pmYUL - HRL
2 stops20h 59mUnited Airlines
Deal found 10/28$796
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/223:39 pmHRL - YUL
1 stop7h 03mDelta
Wed 11/267:10 amYUL - HRL
1 stop8h 33mDelta
Deal found 10/28$808
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Sat 11/224:08 pmHRL - YUL
1 stop21h 56mAmerican Airlines
Wed 11/262:29 pmYUL - HRL
2 stops20h 14mAmerican Airlines
Deal found 10/27$818
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:00 pmHRL - YUL
2 stops21h 57mUnited Airlines
Thu 12/189:25 amYUL - HRL
2 stops13h 34mUnited Airlines
Deal found 10/27$819
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/185:34 amHRL - YUL
2 stops16h 24mAmerican Airlines
Tue 12/233:51 pmYUL - HRL
2 stops18h 49mAmerican Airlines
Deal found 10/27$823
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:28 amHRL - YUL
2 stops26h 26mMultiple Airlines
Thu 12/187:10 amYUL - HRL
1 stop28h 43mMultiple Airlines
Deal found 10/27$865
This United Airlines deal was found by Cheapflights users on 10/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:00 amHRL - YUL
1 stop10h 48mUnited Airlines
Tue 12/238:00 pmYUL - HRL
2 stops24h 36mUnited Airlines
Deal found 10/28$893
This Priceline deal was found by Cheapflights users on 10/27. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:41 pmHRL - YUL
1 stop7h 06mWestJet
Thu 12/187:10 amYUL - HRL
1 stop8h 36mWestJet
Deal found 10/27$964
This United deal was found by Cheapflights users on 10/28. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/87:00 amHRL - YUL
2 stops12h 05mMultiple Airlines
Sat 11/810:30 pmYUL - HRL
2 stops22h 09mMultiple Airlines
Deal found 10/28$1,000

Cheap flight deals from Harlingen to Ontario

Keep the following information in mind while searching for Harlingen to Ontario flight deals. Data was last updated October 29, 2025.

Round-trip from

$674
(United Airlines)

One-way from

$410
(Delta)
From Harlingen Valley Intl to Ontario
Search Deals
One-way flight from Harlingen Valley Intl to Ontario
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 October 29, 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

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 4/7

5:15 am-5:42 pm

2 stops11h 27m

Montreal Pierre Elliott Trudeau Intl

Wed 4/8

9:45 am-9:44 pm

2 stops12h 59m

$674

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 12/27

8:11 pm-3:14 pm

1 stop18h 03m

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

3:52 pm-10:36 am

2 stops19h 44m

$686

HarlingenToronto

HRL - YYZ

HRLYYZ

Harlingen Valley Intl

Mon 4/6

5:15 am-2:16 pm

1 stop8h 01m

Toronto Pearson Intl

Wed 4/8

6:30 pm-3:34 pm

2 stops22h 04m

$743

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 4/7

5:50 am-2:49 pm

1 stop7h 59m

Montreal Pierre Elliott Trudeau Intl

Wed 4/8

12:30 pm-11:59 pm

2 stops12h 29m

$774

HarlingenToronto

HRL - YYZ

HRLYYZ

Harlingen Valley Intl

Mon 4/6

10:04 am-9:44 pm

2 stops10h 40m

Toronto Pearson Intl

Wed 4/8

1:10 pm-11:59 pm

2 stops11h 49m

$776

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 11/22

5:00 pm-7:45 am

2 stops13h 45m

Montreal Pierre Elliott Trudeau Intl

Wed 11/26

8:00 pm-3:59 pm

2 stops20h 59m

$796

HarlingenToronto

HRL - YYZ

HRLYYZ

Harlingen Valley Intl

Mon 4/6

3:00 pm-11:04 pm

1 stop7h 04m

Toronto Pearson Intl

Wed 4/8

6:30 am-2:29 pm

1 stop8h 59m

$805

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 12/27

9:55 am-11:19 pm

3 stops36h 24m

Montreal Pierre Elliott Trudeau Intl

Wed 1/7

3:10 pm-10:24 am

2 stops20h 14m

$808

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 11/22

3:39 pm-11:42 pm

1 stop7h 03m

Montreal Pierre Elliott Trudeau Intl

Wed 11/26

7:10 am-2:43 pm

1 stop8h 33m

$808

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 11/22

4:08 pm-3:04 pm

1 stop21h 56m

Montreal Pierre Elliott Trudeau Intl

Wed 11/26

2:29 pm-9:43 am

2 stops20h 14m

$818

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 20 results
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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
No data available for this route at this time. Please check back soon.

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.

  • What airport do you fly from for flights from Harlingen to Ontario?

    Most people fly from Harlingen Valley Intl (HRL) if they book a flight from Harlingen to Ontario. Harlingen Valley Intl is conveniently located just 3.7 mi from Harlingen’s city center.

  • How long is the flight from Harlingen, Texas to Region of Ontario?

    A quick flight from Harlingen, Texas to Region of Ontario can take about 11h 27m. United Airlines provides one of the quickest options available for as low as $674. Airlines will cover a distance of 1871 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Harlingen, Texas to Region of Ontario one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $410. However, be on the lookout for offers from WestJet and United Airlines, as they are both options that can get you from Harlingen, Texas to Region of Ontario for a low price.

  • What are the most popular routes from Harlingen, Texas to Region of Ontario?

    When deciding which route to take from Harlingen, Texas to Region of Ontario consider Harlingen Valley Intl - Montreal Pierre Elliott Trudeau Intl, Harlingen Valley Intl - Toronto Pearson Intl or Harlingen Valley Intl - Toronto Island as they are the most popular.

  • 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

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