What airlines fly to Ontario?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Ontario from Harlingen, Texas according to our data. American Airlines is the first choice among our users, with 58% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 5 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Harlingen Valley Intl to Ontario?

United Airlines is the most popular carrier operating from Harlingen Valley Intl to Ontario

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

Prices for flights from Harlingen Valley Intl Airport to Ontario Airport refresh daily.

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

As of August 2025, there are 2 operators available to choose from for flights from Harlingen Valley Intl Airport to Ontario Airport.

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

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 Airport.

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

The travel and health documents required for your trip to Ontario Airport 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 Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$153 Cheap Flights from Harlingen, Texas to Ontario (HRL-ONT) in 2025

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Find the cheapest flights from Harlingen, Texas to Los Angeles (HRL-ONT)

Round-trip

One-way

Last minute

Cheap round-trip flights

5:20 pm - 9:25 pmHRL-ONT

6h 05m1 stop

6:04 am - 4:02 pmONT-HRL

7h 58m1 stop

$305United Airlines

Find Deal

Thu, Aug 28 - Mon, Sep 1

5:17 pm - 9:24 pmHRL-ONT

6h 07m1 stop

9:36 am - 11:18 pmONT-HRL

11h 42m2 stops

$310United Airlines

Find Deal

Tue, Sep 30 - Wed, Oct 15

2:05 pm - 10:52 pmHRL-ONT

10h 47m2 stops

9:36 am - 11:18 pmONT-HRL

11h 42m2 stops

$315United Airlines

Find Deal

Tue, Sep 30 - Wed, Oct 15

5:00 am - 9:25 pmHRL-ONT

18h 25m1 stop

6:04 am - 4:02 pmONT-HRL

7h 58m1 stop

$382United Airlines

Find Deal

Fri, Aug 29 - Tue, Sep 2

2:05 pm - 10:52 pmHRL-ONT

10h 47m2 stops

9:36 am - 11:18 pmONT-HRL

11h 42m2 stops

$397United Airlines

Find Deal

Fri, Oct 3 - Tue, Oct 7

5:00 pm - 9:37 pmHRL-ONT

6h 37m1 stop

5:05 am - 7:39 pmONT-HRL

12h 34m2 stops

$401United Airlines

Find Deal

Sat, Nov 1 - Tue, Nov 4

5:00 am - 12:32 pmHRL-ONT

9h 32m2 stops

6:04 am - 4:02 pmONT-HRL

7h 58m1 stop

$447United Airlines

Find Deal

Thu, Aug 28 - Mon, Sep 1

12:10 pm - 8:44 pmHRL-ONT

10h 34m2 stops

5:05 am - 7:39 pmONT-HRL

12h 34m2 stops

$453United Airlines

Find Deal

Sat, Nov 1 - Tue, Nov 4

5:00 am - 12:13 pmHRL-ONT

9h 13m2 stops

6:00 am - 7:33 pmONT-HRL

11h 33m2 stops

$467United Airlines

Find Deal

Tue, Aug 19 - Wed, Aug 20

5:00 pm - 9:37 pmHRL-ONT

6h 37m1 stop

6:05 am - 7:39 pmONT-HRL

11h 34m1 stop

$468United Airlines

Find Deal

Sat, Nov 1 - Tue, Nov 4

United Airlines flights from Harlingen, Texas to Ontario

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

United Airlines

Aug 28

HRL5:20 pmHarlingen Valley Intl

6h 05m

1 stop

ONT9:25 pmOntario

Sep 1

ONT6:04 amOntario

7h 58m

1 stop

HRL4:02 pmHarlingen Valley Intl

$305

Find similar

United Airlines

Sep 30

HRL5:17 pmHarlingen Valley Intl

6h 07m

1 stop

ONT9:24 pmOntario

Oct 15

ONT9:36 amOntario

11h 42m

2 stops

HRL11:18 pmHarlingen Valley Intl

$310

Find similar

United Airlines

Sep 30

HRL2:05 pmHarlingen Valley Intl

10h 47m

2 stops

ONT10:52 pmOntario

Oct 15

ONT9:36 amOntario

11h 42m

2 stops

HRL11:18 pmHarlingen Valley Intl

$315

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 8/28

5:20 pm-9:25 pm

1 stop6h 05m

Ontario

Mon 9/1

6:04 am-4:02 pm

1 stop7h 58m

$305

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/30

5:17 pm-9:24 pm

1 stop6h 07m

Ontario

Wed 10/15

9:36 am-11:18 pm

2 stops11h 42m

$310

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/30

2:05 pm-10:52 pm

2 stops10h 47m

Ontario

Wed 10/15

9:36 am-11:18 pm

2 stops11h 42m

$315

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 8/29

5:00 am-9:25 pm

1 stop18h 25m

Ontario

Tue 9/2

6:04 am-4:02 pm

1 stop7h 58m

$382

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Fri 10/3

2:05 pm-10:52 pm

2 stops10h 47m

Ontario

Tue 10/7

9:36 am-11:18 pm

2 stops11h 42m

$397

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 11/1

5:00 pm-9:37 pm

1 stop6h 37m

Ontario

Tue 11/4

5:05 am-7:39 pm

2 stops12h 34m

$401

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 8/28

5:00 am-12:32 pm

2 stops9h 32m

Ontario

Mon 9/1

6:04 am-4:02 pm

1 stop7h 58m

$447

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 11/1

12:10 pm-8:44 pm

2 stops10h 34m

Ontario

Tue 11/4

5:05 am-7:39 pm

2 stops12h 34m

$453

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 8/19

5:00 am-12:13 pm

2 stops9h 13m

Ontario

Wed 8/20

6:00 am-7:33 pm

2 stops11h 33m

$467

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 11/1

5:00 pm-9:37 pm

1 stop6h 37m

Ontario

Tue 11/4

6:05 am-7:39 pm

1 stop11h 34m

$468

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

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

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 Ontario?

The cheapest day to depart on your flight to Ontario is on a Sunday when prices can be found for as low as $270. This is often the case because there is less demand to fly during this day of the week. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Harlingen, Texas to Ontario for around $400.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Harlingen, Texas to Ontario when you can find flight prices for as low as $320. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $385 on average. Flights to Ontario from Harlingen, Texas in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Harlingen, Texas to Ontario

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

Estimated round-trip price

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

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

Best Price Found	$153
Fastest flight time	6h 05m
Direct flights	None
Airports in Ontario	1 airport

The best one-way flight to Ontario from Harlingen, Texas in the past 72 hours is $153. The best round-trip flight deal from Harlingen, Texas to Ontario found on momondo in the last 72 hours is $305.

The fastest flight from Harlingen, Texas to Ontario takes 6h 05m

There are no direct flights from Harlingen, Texas to Ontario. Popular non-direct route for this connection is Harlingen Valley Intl Airport - Ontario Airport.

There is 1 airport near Ontario: Ontario (ONT)

Search flight deals

How far is Harlingen Valley Intl to Ontario by plane?
There are 1306.7 mi between Harlingen Valley Intl and Ontario. 6h 05m is a normal flight duration for this route.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to Ontario Airport?
Prices for flights from Harlingen Valley Intl Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Ontario Airport?
As of August 2025, there are 2 operators available to choose from for flights from Harlingen Valley Intl Airport to Ontario Airport.
How old do you have to be to fly from Harlingen Valley Intl Airport to Ontario Airport?
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 Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport 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 Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Harlingen, Texas to Ontario?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Harlingen, Texas to Ontario is American Airlines (52% of total bookings). The next most popular airline is Southwest (48%).

Best airlines flying from Harlingen, Texas to Ontario

Compare and see reviews for airlines that fly from Harlingen, Texas to Ontario with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom $224	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights
Southwest	PriceFrom $269	Free Cancellation	Rating 8.0 4,244 reviews		Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Harlingen to Ontario. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. All flights to Ontario from Harlingen on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Harlingen and Ontario by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

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