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Cheap flights from Ontario to Harlingen from $159

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 8/24. 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

Southwest Logo
12:55 pm - 10:35 pmONT-HRL
7h 40m2 stops
Southwest Logo
7:30 am - 12:55 pmHRL-ONT
7h 25m2 stops
$277Southwest
Find Deal
ven, ott 3 - mer, ott 8
Southwest Logo
12:55 pm - 11:30 pmONT-HRL
8h 35m1 stop
Southwest Logo
7:30 am - 3:15 pmHRL-ONT
9h 45m1 stop
$278Southwest
Find Deal
ven, ott 3 - mer, ott 8
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
United Airlines Logo
5:15 pm - 9:37 pmHRL-ONT
6h 22m1 stop
$478United Airlines
Find Deal
mar, ago 12 - ven, ago 15
United Airlines Logo
6:00 am - 1:20 pmONT-HRL
5h 20m1 stop
United Airlines Logo
5:15 pm - 9:37 pmHRL-ONT
6h 22m1 stop
$499United Airlines
Find Deal
gio, ago 14 - lun, ago 18
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
United Airlines Logo
5:20 pm - 9:25 pmHRL-ONT
6h 05m1 stop
$518United Airlines
Find Deal
ven, ago 15 - mar, ago 19
United Airlines Logo
6:00 am - 1:20 pmONT-HRL
5h 20m1 stop
United Airlines Logo
1:59 pm - 8:54 pmHRL-ONT
8h 55m2 stops
$566United Airlines
Find Deal
mar, ago 12 - ven, ago 15
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
United Airlines Logo
5:00 am - 12:32 pmHRL-ONT
9h 32m2 stops
$584United Airlines
Find Deal
ven, ago 15 - mar, ago 19
United Airlines Logo
5:05 am - 4:00 pmONT-HRL
8h 55m2 stops
United Airlines Logo
5:15 pm - 9:37 pmHRL-ONT
6h 22m1 stop
$587United Airlines
Find Deal
gio, ago 14 - lun, ago 18
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
United Airlines Logo
2:05 pm - 9:25 pmHRL-ONT
9h 20m1 stop
$607United Airlines
Find Deal
lun, ago 18 - ven, ago 22
United Airlines Logo
5:05 am - 7:35 pmONT-HRL
12h 30m2 stops
United Airlines Logo
5:20 pm - 9:25 pmHRL-ONT
6h 05m1 stop
$631United Airlines
Find Deal
lun, ago 18 - ven, ago 22

United Airlines flights from Ontario to Harlingen, Texas

Our best United Airlines deals on Ontario to Harlingen, Texas flight tickets
United Airlines
Aug 12
ONT6:00 amOntario
8h 00m
1 stop
HRL4:00 pmHarlingen Valley Intl
Aug 15
HRL5:15 pmHarlingen Valley Intl
6h 22m
1 stop
ONT9:37 pmOntario
$478
Find similar
United Airlines
Aug 8
ONT6:00 amOntario
8h 00m
1 stop
HRL4:00 pmHarlingen Valley Intl
Aug 12
HRL5:10 amHarlingen Valley Intl
9h 22m
2 stops
ONT12:32 pmOntario
$483
Find similar
United Airlines
Aug 14
ONT6:00 amOntario
5h 20m
1 stop
HRL1:20 pmHarlingen Valley Intl
Aug 18
HRL5:15 pmHarlingen Valley Intl
6h 22m
1 stop
ONT9:37 pmOntario
$499
Find similar

Southwest flights from Ontario to Harlingen, Texas

Our best Southwest deals on Ontario to Harlingen, Texas flight tickets
Southwest
Oct 3
ONT12:55 pmOntario
7h 40m
2 stops
HRL10:35 pmHarlingen Valley Intl
Oct 8
HRL7:30 amHarlingen Valley Intl
7h 25m
2 stops
ONT12:55 pmOntario
$277
Find similar
Southwest
Oct 3
ONT12:55 pmOntario
8h 35m
1 stop
HRL11:30 pmHarlingen Valley Intl
Oct 8
HRL7:30 amHarlingen Valley Intl
9h 45m
1 stop
ONT3:15 pmOntario
$278
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 agosto 1, 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

ven 10/3

12:55 pm-10:35 pm

2 stops7h 40m

Harlingen Valley Intl

mer 10/8

7:30 am-12:55 pm

2 stops7h 25m

$277

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

ven 10/3

12:55 pm-11:30 pm

1 stop8h 35m

Harlingen Valley Intl

mer 10/8

7:30 am-3:15 pm

1 stop9h 45m

$278

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mar 8/12

6:00 am-4:00 pm

1 stop8h 00m

Harlingen Valley Intl

ven 8/15

5:15 pm-9:37 pm

1 stop6h 22m

$478

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

gio 8/14

6:00 am-1:20 pm

1 stop5h 20m

Harlingen Valley Intl

lun 8/18

5:15 pm-9:37 pm

1 stop6h 22m

$499

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

ven 8/15

6:00 am-4:00 pm

1 stop8h 00m

Harlingen Valley Intl

mar 8/19

5:20 pm-9:25 pm

1 stop6h 05m

$518

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

mar 8/12

6:00 am-1:20 pm

1 stop5h 20m

Harlingen Valley Intl

ven 8/15

1:59 pm-8:54 pm

2 stops8h 55m

$566

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

ven 8/15

6:00 am-4:00 pm

1 stop8h 00m

Harlingen Valley Intl

mar 8/19

5:00 am-12:32 pm

2 stops9h 32m

$584

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

gio 8/14

5:05 am-4:00 pm

2 stops8h 55m

Harlingen Valley Intl

lun 8/18

5:15 pm-9:37 pm

1 stop6h 22m

$587

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

lun 8/18

6:00 am-4:00 pm

1 stop8h 00m

Harlingen Valley Intl

ven 8/22

2:05 pm-9:25 pm

1 stop9h 20m

$607

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

lun 8/18

5:05 am-7:35 pm

2 stops12h 30m

Harlingen Valley Intl

ven 8/22

5:20 pm-9:25 pm

1 stop6h 05m

$631

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Best Price Found

$159

Fastest flight time

5h 20m

Direct flights

None

Airports in Harlingen, Texas

1 airport
The best one-way flight to Harlingen, Texas from Ontario in the past 72 hours is $159. The best round-trip flight deal from Ontario to Harlingen, Texas found on momondo in the last 72 hours is $277.
The fastest flight from Ontario to Harlingen, Texas takes 5h 20m
There are no direct flights from Ontario to Harlingen, Texas. Popular non-direct route for this connection is Ontario Airport - Harlingen Valley Intl Airport.
There is 1 airport near Harlingen, Texas: Harlingen Valley Intl (HRL)
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 5h 20m.

  • 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
10,000 reviews
Search American Airlines 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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