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Cheap flights from Harlingen, Texas to Ontario from $661

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen, Texas to Ontario departing on 4/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Harlingen, Texas to Ontario

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:18 pm - 4:05 pm
HRL
-
YUL
21h 47m
2 stops
United Airlines Logo
6:05 pm - 11:23 am
YUL
-
HRL
18h 18m
2 stops
$661United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
7:00 am - 11:03 pm
HRL
-
YYZ
15h 03m
2 stops
United Airlines Logo
4:50 pm - 11:23 am
YYZ
-
HRL
19h 33m
2 stops
$676United Airlines
Wed, Apr 8 - Sun, Apr 12
United Airlines Logo
12:05 pm - 8:00 am
HRL
-
YUL
18h 55m
2 stops
United Airlines Logo
8:00 pm - 8:00 pm
YUL
-
HRL
25h 00m
2 stops
$688United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
7:00 am - 8:09 pm
HRL
-
YTZ
12h 09m
2 stops
United Airlines Logo
7:25 am - 9:59 pm
YTZ
-
HRL
15h 34m
2 stops
$699United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
12:05 pm - 11:39 am
HRL
-
YTZ
22h 34m
2 stops
United Airlines Logo
2:20 pm - 9:59 pm
YTZ
-
HRL
32h 39m
2 stops
$710United Airlines
Tue, Apr 28 - Wed, Apr 29
United Airlines Logo
9:20 am - 9:34 am
HRL
-
YTZ
23h 14m
2 stops
United Airlines Logo
6:10 pm - 8:00 pm
YTZ
-
HRL
26h 50m
2 stops
$711United Airlines
Tue, Apr 28 - Wed, Apr 29
Delta Logo
4:04 pm - 11:40 pm
HRL
-
YUL
6h 36m
1 stop
Delta Logo
7:00 am - 3:09 pm
YUL
-
HRL
9h 09m
1 stop
$738Delta
Tue, Mar 17 - Sun, Mar 22
Delta Logo
4:04 pm - 11:40 pm
HRL
-
YUL
6h 36m
1 stop
Delta Logo
7:00 am - 3:09 pm
YUL
-
HRL
9h 09m
1 stop
$779Delta
Sun, Mar 15 - Mon, Mar 23
Air Canada Logo
7:00 am - 4:42 pm
HRL
-
YUL
8h 42m
1 stop
Air Canada Logo
11:10 am - 9:59 pm
YUL
-
HRL
11h 49m
2 stops
$827Air Canada
Tue, Apr 28 - Wed, Apr 29
Delta Logo
4:04 pm - 11:40 pm
HRL
-
YUL
6h 36m
1 stop
Delta Logo
6:00 am - 3:09 pm
YUL
-
HRL
10h 09m
2 stops
$875Delta
Sat, Mar 14 - Mon, Mar 23

United Airlines flights from Harlingen, Texas to Region of Ontario

Our best United Airlines deals on Harlingen, Texas to Region of Ontario flight tickets
United Airlines
Apr 28
HRL5:18 pmHarlingen Valley Intl
21h 47m
2 stops
YUL4:05 pmMontreal Pierre Elliott Trudeau Intl
Apr 29
YUL6:05 pmMontreal Pierre Elliott Trudeau Intl
18h 18m
2 stops
HRL11:23 amHarlingen Valley Intl
$661
United Airlines
Apr 8
HRL7:00 amHarlingen Valley Intl
15h 03m
2 stops
YYZ11:03 pmToronto Pearson Intl
Apr 12
YYZ4:50 pmToronto Pearson Intl
19h 33m
2 stops
HRL11:23 amHarlingen Valley Intl
$676
United Airlines
Apr 28
HRL12:05 pmHarlingen Valley Intl
18h 55m
2 stops
YUL8:00 amMontreal Pierre Elliott Trudeau Intl
Apr 29
YUL8:00 pmMontreal Pierre Elliott Trudeau Intl
25h 00m
2 stops
HRL8:00 pmHarlingen Valley Intl
$688

Air Canada flights from Harlingen, Texas to Region of Ontario

Our best Air Canada deals on Harlingen, Texas to Region of Ontario flight tickets
Air Canada
Apr 28
HRL7:00 amHarlingen Valley Intl
8h 42m
1 stop
YUL4:42 pmMontreal Pierre Elliott Trudeau Intl
Apr 29
YUL11:10 amMontreal Pierre Elliott Trudeau Intl
11h 49m
2 stops
HRL9:59 pmHarlingen Valley Intl
$827
Air Canada
Feb 2
HRL12:10 pmHarlingen Valley Intl
9h 27m
1 stop
YYZ10:37 pmToronto Pearson Intl
Feb 4
YYZ8:15 amToronto Pearson Intl
8h 51m
1 stop
HRL4:06 pmHarlingen Valley Intl
$1,117

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas to Region of 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, momondo users made 832,500 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from Harlingen, Texas to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 4/28

5:18 pm-4:05 pm

2 stops21h 47m

Montreal Pierre Elliott Trudeau Intl

Wed 4/29

6:05 pm-11:23 am

2 stops18h 18m

$661

HarlingenToronto

HRL - YYZ

HRLYYZ

Harlingen Valley Intl

Wed 4/8

7:00 am-11:03 pm

2 stops15h 03m

Toronto Pearson Intl

Sun 4/12

4:50 pm-11:23 am

2 stops19h 33m

$676

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 4/28

12:05 pm-8:00 am

2 stops18h 55m

Montreal Pierre Elliott Trudeau Intl

Wed 4/29

8:00 pm-8:00 pm

2 stops25h 00m

$688

HarlingenToronto

HRL - YTZ

HRLYTZ

Harlingen Valley Intl

Tue 4/28

7:00 am-8:09 pm

2 stops12h 09m

Toronto Island

Wed 4/29

7:25 am-9:59 pm

2 stops15h 34m

$699

HarlingenToronto

HRL - YTZ

HRLYTZ

Harlingen Valley Intl

Tue 4/28

12:05 pm-11:39 am

2 stops22h 34m

Toronto Island

Wed 4/29

2:20 pm-9:59 pm

2 stops32h 39m

$710

HarlingenToronto

HRL - YTZ

HRLYTZ

Harlingen Valley Intl

Tue 4/28

9:20 am-9:34 am

2 stops23h 14m

Toronto Island

Wed 4/29

6:10 pm-8:00 pm

2 stops26h 50m

$711

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 3/17

4:04 pm-11:40 pm

1 stop6h 36m

Montreal Pierre Elliott Trudeau Intl

Sun 3/22

7:00 am-3:09 pm

1 stop9h 09m

$738

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sun 3/15

4:04 pm-11:40 pm

1 stop6h 36m

Montreal Pierre Elliott Trudeau Intl

Mon 3/23

7:00 am-3:09 pm

1 stop9h 09m

$779

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Tue 4/28

7:00 am-4:42 pm

1 stop8h 42m

Montreal Pierre Elliott Trudeau Intl

Wed 4/29

11:10 am-9:59 pm

2 stops11h 49m

$827

HarlingenMontreal

HRL - YUL

HRLYUL

Harlingen Valley Intl

Sat 3/14

4:04 pm-11:40 pm

1 stop6h 36m

Montreal Pierre Elliott Trudeau Intl

Mon 3/23

6:00 am-3:09 pm

2 stops10h 09m

$875

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

Cheap Harlingen, Texas to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Harlingen, Texas to Region of Ontario

Fastest flight time

6h 20m

Direct flights

None
The fastest flight from Harlingen, Texas to Region of Ontario takes 6h 20m
There are no direct flights from Harlingen, Texas to Region of Ontario. There are no popular flight routes from Harlingen, Texas to Region of Ontario.
Search flight deals

  • When did momondo last update prices for flights from Harlingen Valley Intl Airport to Ontario?

    Prices for flights from Harlingen Valley Intl Airport to Ontario are refreshed on a daily basis.

  • How old do you have to be to fly from Harlingen Valley Intl Airport to Ontario?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Harlingen Valley Intl Airport to Ontario.

  • What documentation or ID do you need to fly to Ontario?

    The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Harlingen, Texas to Region of Ontario?

    Confirm your travel details to search for the latest offers for flights from Harlingen, Texas to Region of Ontario. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from Harlingen, Texas to Region of Ontario with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Ontario?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Harlingen to Ontario. momondo saves you time and could save you money on your trip.

Can I find flights from Harlingen to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Harlingen to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Harlingen to Ontario?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Harlingen.

I’m not ready to book a flight from Harlingen to Ontario right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Ontario, momondo offers a useful price alert feature which will track prices for flights to Ontario from Harlingen and alert you when they change.

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