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Cheap flights from Harlingen to Los Angeles from $174

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Los Angeles departing on 6/9. 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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0 bags

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Find the cheapest flights from Harlingen to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
American Airlines Logo
1:10 pm - 12:14 am
ONT
-
HRL
9h 04m
2 stops
$310American Airlines
Sat, May 30 - Wed, Jun 3
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
American Airlines Logo
11:59 pm - 10:13 am
ONT
-
HRL
8h 14m
1 stop
$315American Airlines
Tue, Jun 2 - Sat, Jun 6
United Airlines Logo
5:18 pm - 9:58 pm
HRL
-
ONT
6h 40m
1 stop
United Airlines Logo
6:00 am - 3:58 pm
ONT
-
HRL
7h 58m
1 stop
$347United Airlines
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
1:59 pm - 10:59 pm
HRL
-
ONT
11h 00m
2 stops
United Airlines Logo
6:00 am - 3:58 pm
ONT
-
HRL
7h 58m
1 stop
$352United Airlines
Tue, Sep 29 - Wed, Sep 30
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
American Airlines Logo
11:59 pm - 10:13 am
ONT
-
HRL
8h 14m
1 stop
$359American Airlines
Sat, May 30 - Wed, Jun 3
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
American Airlines Logo
1:11 pm - 12:14 am
ONT
-
HRL
9h 03m
2 stops
$392American Airlines
Tue, Jun 2 - Sat, Jun 6
United Airlines Logo
5:18 pm - 9:58 pm
HRL
-
ONT
6h 40m
1 stop
United Airlines Logo
6:00 am - 1:23 pm
ONT
-
HRL
5h 23m
1 stop
$397United Airlines
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
1:59 pm - 10:59 pm
HRL
-
ONT
11h 00m
2 stops
United Airlines Logo
6:00 am - 3:58 pm
ONT
-
HRL
7h 58m
1 stop
$402United Airlines
Tue, Sep 29 - Wed, Sep 30
Southwest Logo
5:15 am - 8:55 am
HRL
-
ONT
5h 40m
1 stop
Southwest Logo
12:50 pm - 11:40 pm
ONT
-
HRL
8h 50m
2 stops
$439Southwest
Thu, Jun 11 - Thu, Jun 18
United Airlines Logo
7:15 am - 8:16 pm
HRL
-
ONT
15h 01m
2 stops
United Airlines Logo
5:00 am - 9:52 pm
ONT
-
HRL
14h 52m
2 stops
$446United Airlines
Tue, Sep 29 - Wed, Sep 30

United Airlines flights from Harlingen to Ontario

Our best United Airlines deals on Harlingen to Ontario flight tickets
United Airlines
Sep 29
HRL5:18 pmHarlingen Valley Intl
6h 40m
1 stop
ONT9:58 pmOntario
Sep 30
ONT6:00 amOntario
7h 58m
1 stop
HRL3:58 pmHarlingen Valley Intl
$347
United Airlines
Sep 29
HRL1:59 pmHarlingen Valley Intl
11h 00m
2 stops
ONT10:59 pmOntario
Sep 30
ONT6:00 amOntario
7h 58m
1 stop
HRL3:58 pmHarlingen Valley Intl
$352
United Airlines
Sep 29
HRL5:18 pmHarlingen Valley Intl
6h 40m
1 stop
ONT9:58 pmOntario
Sep 30
ONT6:00 amOntario
5h 23m
1 stop
HRL1:23 pmHarlingen Valley Intl
$397

American Airlines flights from Harlingen to Ontario

Our best American Airlines deals on Harlingen to Ontario flight tickets
American Airlines
May 30
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jun 3
ONT1:10 pmOntario
9h 04m
2 stops
HRL12:14 amHarlingen Valley Intl
$310
American Airlines
Jun 2
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jun 6
ONT11:59 pmOntario
8h 14m
1 stop
HRL10:13 amHarlingen Valley Intl
$315
American Airlines
May 30
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jun 3
ONT11:59 pmOntario
8h 14m
1 stop
HRL10:13 amHarlingen Valley Intl
$359

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen to 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 May 19, 2026.
Use the filters below to find and compare flights from Harlingen to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 5/30

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Wed 6/3

1:10 pm-12:14 am

2 stops9h 04m

$310

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 6/2

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Sat 6/6

11:59 pm-10:13 am

1 stop8h 14m

$315

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

5:18 pm-9:58 pm

1 stop6h 40m

Ontario

Wed 9/30

6:00 am-3:58 pm

1 stop7h 58m

$347

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

1:59 pm-10:59 pm

2 stops11h 00m

Ontario

Wed 9/30

6:00 am-3:58 pm

1 stop7h 58m

$352

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sat 5/30

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Wed 6/3

11:59 pm-10:13 am

1 stop8h 14m

$359

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 6/2

8:04 pm-11:59 pm

1 stop5h 55m

Ontario

Sat 6/6

1:11 pm-12:14 am

2 stops9h 03m

$392
Quickest round-trip

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

5:18 pm-9:58 pm

1 stop6h 40m

Ontario

Wed 9/30

6:00 am-1:23 pm

1 stop5h 23m

$397

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

1:59 pm-10:59 pm

2 stops11h 00m

Ontario

Wed 9/30

6:00 am-3:58 pm

1 stop7h 58m

$402

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Thu 6/11

5:15 am-8:55 am

1 stop5h 40m

Ontario

Thu 6/18

12:50 pm-11:40 pm

2 stops8h 50m

$439

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

7:15 am-8:16 pm

2 stops15h 01m

Ontario

Wed 9/30

5:00 am-9:52 pm

2 stops14h 52m

$446

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 Los Angeles from

How to get the cheapest flight ticket from Harlingen 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

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

American Airlines and United Airlines are the most popular carriers operating from Harlingen Valley Intl to Ontario

What airlines fly to Ontario?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Ontario from Harlingen according to our data. American Airlines is the first choice among our users, with 56% 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.

When to book flights from Harlingen to Ontario

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

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

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

Fastest flight time

6h 35m

Direct flights

None
The fastest flight from Harlingen to Ontario takes 6h 35m
There are no direct flights from Harlingen to Ontario. There are no popular flight routes from Harlingen to Ontario.
Search flight deals

Frequently asked questions about flying from Harlingen to Ontario

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

    There are 1306.7 mi between Harlingen Valley Intl and Ontario. 6h 35m 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?

  • 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 to Ontario?

Best airlines flying from Harlingen to Ontario

Compare and see reviews for airlines that fly from Harlingen to Ontario with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $311Free CancellationRating
7.1
11,645 reviews
Search American Airlines 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.

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