What airlines fly to Harlingen, Texas?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Harlingen, Texas from Ontario according to our data. American Airlines is the first choice among our users, with 65% of people opting to fly with this airline when traveling to Harlingen, Texas. Keep in mind that there are 5 different airlines that fly to Harlingen, Texas on a routine basis, so you have a few additional options to choose from.

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?

As of December 2025, there are 2 operators available to choose from 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.

$227 Cheap Flights from Ontario to Harlingen in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Ontario to Harlingen

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 4:06 pm

ONT

HRL

8h 06m1 stop

5:25 pm - 9:58 pm

HRL

ONT

6h 33m1 stop

$331United Airlines

Sat, Jan 24 - Wed, Jan 28

6:00 am - 4:06 pm

ONT

HRL

8h 06m1 stop

12:10 pm - 10:53 pm

HRL

ONT

12h 43m2 stops

$336United Airlines

Sat, Jan 24 - Wed, Jan 28

8:00 am - 4:04 pm

ONT

HRL

6h 04m1 stop

5:20 pm - 9:59 pm

HRL

ONT

6h 39m1 stop

$371United Airlines

Wed, Feb 25 - Sat, Feb 28

5:00 am - 7:58 pm

ONT

HRL

12h 58m2 stops

5:20 pm - 9:59 pm

HRL

ONT

6h 39m1 stop

$376United Airlines

Wed, Feb 25 - Sat, Feb 28

5:05 am - 4:06 pm

ONT

HRL

9h 01m2 stops

12:10 pm - 10:53 pm

HRL

ONT

12h 43m2 stops

$381United Airlines

Sat, Jan 24 - Wed, Jan 28

5:00 am - 9:59 pm

ONT

HRL

14h 59m2 stops

5:20 pm - 9:59 pm

HRL

ONT

6h 39m1 stop

$411United Airlines

Wed, Feb 25 - Sat, Feb 28

5:00 am - 7:58 pm

ONT

HRL

12h 58m2 stops

9:20 am - 5:41 pm

HRL

ONT

10h 21m2 stops

$461United Airlines

Wed, Feb 25 - Sat, Feb 28

6:00 am - 2:14 pm

ONT

HRL

6h 14m1 stop

8:06 pm - 11:59 pm

HRL

ONT

5h 53m1 stop

$476American Airlines

Sun, Mar 29 - Sat, Apr 4

5:00 am - 9:59 pm

ONT

HRL

14h 59m2 stops

9:20 am - 5:41 pm

HRL

ONT

10h 21m2 stops

$496United Airlines

Wed, Feb 25 - Sat, Feb 28

6:00 am - 2:14 pm

ONT

HRL

6h 14m1 stop

8:06 pm - 8:49 am

HRL

ONT

14h 43m2 stops

$585American Airlines

Sun, Mar 29 - Sat, Apr 4

United Airlines flights from Ontario to Harlingen, Texas

Our best United Airlines deals on Ontario to Harlingen, Texas flight tickets

United Airlines

Jan 24

ONT6:00 amOntario

8h 06m

1 stop

HRL4:06 pmHarlingen Valley Intl

Jan 28

HRL5:25 pmHarlingen Valley Intl

6h 33m

1 stop

ONT9:58 pmOntario

$331

Find similar

United Airlines

Jan 24

ONT6:00 amOntario

8h 06m

1 stop

HRL4:06 pmHarlingen Valley Intl

Jan 28

HRL12:10 pmHarlingen Valley Intl

12h 43m

2 stops

ONT10:53 pmOntario

$336

Find similar

United Airlines

Feb 25

ONT8:00 amOntario

6h 04m

1 stop

HRL4:04 pmHarlingen Valley Intl

Feb 28

HRL5:20 pmHarlingen Valley Intl

6h 39m

1 stop

ONT9:59 pmOntario

$371

Find similar

American Airlines flights from Ontario to Harlingen, Texas

Our best American Airlines deals on Ontario to Harlingen, Texas flight tickets

American Airlines

Mar 29

ONT6:00 amOntario

6h 14m

1 stop

HRL2:14 pmHarlingen Valley Intl

Apr 4

HRL8:06 pmHarlingen Valley Intl

5h 53m

1 stop

ONT11:59 pmOntario

$476

Find similar

American Airlines

Mar 29

ONT6:00 amOntario

6h 14m

1 stop

HRL2:14 pmHarlingen Valley Intl

Apr 4

HRL8:06 pmHarlingen Valley Intl

14h 43m

2 stops

ONT8:49 amOntario

$585

Find similar

American Airlines

Dec 21

ONT11:59 pmOntario

7h 41m

1 stop

HRL9:40 amHarlingen Valley Intl

Dec 28

HRL8:11 pmHarlingen Valley Intl

5h 35m

1 stop

ONT11:46 pmOntario

$674

Find similar

momondo Fare Finder

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

Sat 1/24

6:00 am-4:06 pm

1 stop8h 06m

Harlingen Valley Intl

Wed 1/28

5:25 pm-9:58 pm

1 stop6h 33m

$331

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Sat 1/24

6:00 am-4:06 pm

1 stop8h 06m

Harlingen Valley Intl

Wed 1/28

12:10 pm-10:53 pm

2 stops12h 43m

$336

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 2/25

8:00 am-4:04 pm

1 stop6h 04m

Harlingen Valley Intl

Sat 2/28

5:20 pm-9:59 pm

1 stop6h 39m

$371

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 2/25

5:00 am-7:58 pm

2 stops12h 58m

Harlingen Valley Intl

Sat 2/28

5:20 pm-9:59 pm

1 stop6h 39m

$376

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Sat 1/24

5:05 am-4:06 pm

2 stops9h 01m

Harlingen Valley Intl

Wed 1/28

12:10 pm-10:53 pm

2 stops12h 43m

$381

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 2/25

5:00 am-9:59 pm

2 stops14h 59m

Harlingen Valley Intl

Sat 2/28

5:20 pm-9:59 pm

1 stop6h 39m

$411

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 2/25

5:00 am-7:58 pm

2 stops12h 58m

Harlingen Valley Intl

Sat 2/28

9:20 am-5:41 pm

2 stops10h 21m

$461

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Sun 3/29

6:00 am-2:14 pm

1 stop6h 14m

Harlingen Valley Intl

Sat 4/4

8:06 pm-11:59 pm

1 stop5h 53m

$476

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Wed 2/25

5:00 am-9:59 pm

2 stops14h 59m

Harlingen Valley Intl

Sat 2/28

9:20 am-5:41 pm

2 stops10h 21m

$496

OntarioHarlingen

ONT - HRL

ONTHRL

Ontario

Sun 3/29

6:00 am-2:14 pm

1 stop6h 14m

Harlingen Valley Intl

Sat 4/4

8:06 pm-8:49 am

2 stops14h 43m

$585

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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

Fastest flight time	6h 04m
Direct flights	None

The fastest flight from Ontario to Harlingen, Texas takes 6h 04m

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 04m.
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?
As of December 2025, there are 2 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Ontario to Harlingen, Texas is American Airlines (62% of total bookings). The next most popular airline is Southwest (38%).

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 Airlines	PriceFrom $174	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights
Southwest	PriceFrom $250	Free Cancellation	Rating 7.9 4,250 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.