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Cheap flights from Ontario to Harlingen from $194

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Harlingen departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:00 am - 3:30 pmONT-HRL
7h 30m1 stop
American Airlines Logo
8:04 pm - 11:55 pmHRL-ONT
5h 51m1 stop
$269American Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
American Airlines Logo
12:55 pm - 11:11 pmONT-HRL
8h 16m2 stops
American Airlines Logo
8:04 pm - 11:55 pmHRL-ONT
5h 51m1 stop
$309American Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Southwest Logo
12:45 pm - 9:05 pmONT-HRL
6h 20m2 stops
Southwest Logo
6:50 am - 12:30 pmHRL-ONT
7h 40m2 stops
$328Southwest
Find Deal
Wed, Dec 3 - Sun, Dec 7
American Airlines Logo
6:46 am - 4:10 pmONT-HRL
7h 24m1 stop
American Airlines Logo
7:55 pm - 11:43 pmHRL-ONT
5h 48m1 stop
$349American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
American Airlines Logo
10:30 am - 12:04 amONT-HRL
11h 34m2 stops
American Airlines Logo
5:50 am - 9:29 amHRL-ONT
5h 39m1 stop
$354American Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
United Airlines Logo
6:00 am - 7:49 pmONT-HRL
11h 49m2 stops
United Airlines Logo
5:20 pm - 9:52 pmHRL-ONT
6h 32m1 stop
$382United Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 22
United Airlines Logo
6:00 am - 7:49 pmONT-HRL
11h 49m2 stops
United Airlines Logo
12:15 pm - 10:41 pmHRL-ONT
12h 26m2 stops
$387United Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 22
United Airlines Logo
6:00 am - 3:59 pmONT-HRL
7h 59m1 stop
United Airlines Logo
5:20 pm - 9:52 pmHRL-ONT
6h 32m1 stop
$400United Airlines
Find Deal
Mon, Dec 15 - Mon, Dec 22
Southwest Logo
2:15 pm - 11:55 pmONT-HRL
7h 40m1 stop
Southwest Logo
6:20 pm - 11:05 pmHRL-ONT
6h 45m1 stop
$896Southwest
Find Deal
Wed, Nov 26 - Sun, Nov 30
Southwest Logo
5:10 am - 3:05 pmONT-HRL
7h 55m2 stops
Southwest Logo
7:35 pm - 11:20 pmHRL-ONT
5h 45m1 stop
$901Southwest
Find Deal
Wed, Nov 26 - Sun, Nov 30

American Airlines flights from Ontario to Harlingen, Texas

Our best American Airlines deals on Ontario to Harlingen, Texas flight tickets
American Airlines
Dec 3
ONT6:00 amOntario
7h 30m
1 stop
HRL3:30 pmHarlingen Valley Intl
Dec 7
HRL8:04 pmHarlingen Valley Intl
5h 51m
1 stop
ONT11:55 pmOntario
$269
Find similar
American Airlines
Dec 3
ONT12:55 pmOntario
8h 16m
2 stops
HRL11:11 pmHarlingen Valley Intl
Dec 7
HRL8:04 pmHarlingen Valley Intl
5h 51m
1 stop
ONT11:55 pmOntario
$309
Find similar
American Airlines
Mar 10
ONT6:46 amOntario
7h 24m
1 stop
HRL4:10 pmHarlingen Valley Intl
Mar 11
HRL7:55 pmHarlingen Valley Intl
5h 48m
1 stop
ONT11:43 pmOntario
$349
Find similar

Southwest flights from Ontario to Harlingen, Texas

Our best Southwest deals on Ontario to Harlingen, Texas flight tickets
Southwest
Dec 3
ONT12:45 pmOntario
6h 20m
2 stops
HRL9:05 pmHarlingen Valley Intl
Dec 7
HRL6:50 amHarlingen Valley Intl
7h 40m
2 stops
ONT12:30 pmOntario
$328
Find similar
Southwest
Nov 26
ONT2:15 pmOntario
7h 40m
1 stop
HRL11:55 pmHarlingen Valley Intl
Nov 30
HRL6:20 pmHarlingen Valley Intl
6h 45m
1 stop
ONT11:05 pmOntario
$896
Find similar
Southwest
Nov 26
ONT5:10 amOntario
7h 55m
2 stops
HRL3:05 pmHarlingen Valley Intl
Nov 30
HRL7:35 pmHarlingen Valley Intl
5h 45m
1 stop
ONT11:20 pmOntario
$901
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Harlingen, Texas 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 October 30, 2025.
Use the filters below to find and compare flights from Ontario to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 12/3

6:00 am-3:30 pm

1 stop7h 30m

Harlingen Valley Intl

Sun 12/7

8:04 pm-11:55 pm

1 stop5h 51m

$269

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 12/3

12:55 pm-11:11 pm

2 stops8h 16m

Harlingen Valley Intl

Sun 12/7

8:04 pm-11:55 pm

1 stop5h 51m

$309

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 12/3

12:45 pm-9:05 pm

2 stops6h 20m

Harlingen Valley Intl

Sun 12/7

6:50 am-12:30 pm

2 stops7h 40m

$328

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Tue 3/10

6:46 am-4:10 pm

1 stop7h 24m

Harlingen Valley Intl

Wed 3/11

7:55 pm-11:43 pm

1 stop5h 48m

$349

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Tue 3/10

10:30 am-12:04 am

2 stops11h 34m

Harlingen Valley Intl

Wed 3/11

5:50 am-9:29 am

1 stop5h 39m

$354

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Mon 12/15

6:00 am-7:49 pm

2 stops11h 49m

Harlingen Valley Intl

Mon 12/22

5:20 pm-9:52 pm

1 stop6h 32m

$382

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Mon 12/15

6:00 am-7:49 pm

2 stops11h 49m

Harlingen Valley Intl

Mon 12/22

12:15 pm-10:41 pm

2 stops12h 26m

$387

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Mon 12/15

6:00 am-3:59 pm

1 stop7h 59m

Harlingen Valley Intl

Mon 12/22

5:20 pm-9:52 pm

1 stop6h 32m

$400

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 11/26

2:15 pm-11:55 pm

1 stop7h 40m

Harlingen Valley Intl

Sun 11/30

6:20 pm-11:05 pm

1 stop6h 45m

$896

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 11/26

5:10 am-3:05 pm

2 stops7h 55m

Harlingen Valley Intl

Sun 11/30

7:35 pm-11:20 pm

1 stop5h 45m

$901

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
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See travel insights to Harlingen from

How to get the cheapest flight ticket from Ontario to Harlingen, Texas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Wednesday when prices can be found for as low as $285. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Harlingen, Texas for around $488.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is at noon. Flights from Ontario to Harlingen, Texas during this time can be as low as $293. Flights in the morning are often more expensive with an average ticket price of $415.

When to book flights from Ontario to Harlingen, Texas

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Harlingen, Texas according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Harlingen, Texas (ONT to HRL) flight deals and tips

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

Direct flights

None
There are no direct flights from Ontario to Harlingen, Texas. There are no popular flight routes from Ontario to Harlingen, Texas.
Search flight deals

  • How far is Ontario to Harlingen Valley Intl by plane?

    The straight-line distance from Ontario to Harlingen Valley Intl is 1306.7 mi. By plane, this route typically takes 6h 07m.

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

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

  • How many operators does momondo search for flights from Ontario Airport to Harlingen Valley Intl Airport?

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Harlingen Valley Intl Airport.

  • What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

    The necessary travel and health documents for your Harlingen Valley Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Harlingen, Texas?

Best airlines flying from Ontario to Harlingen, Texas

Compare and see reviews for airlines that fly from Ontario to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $174Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights
SouthwestPriceFrom $250Free CancellationRating
8.0
4,243 reviews
Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Harlingen from Ontario.

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

momondo does allow users to show only those flights to Harlingen from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Ontario to Harlingen flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Ontario to Harlingen now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Harlingen and let you know when they change.

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