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Cheap flights from Harlingen to Los Angeles from $170

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 8/16. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Harlingen to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
5:18 pm - 9:50 pm
HRL
-
ONT
6h 32m
1 stop
United Airlines Logo
6:00 am - 4:00 pm
ONT
-
HRL
8h 00m
1 stop
$398United Airlines
Wed, Oct 28 - Sun, Nov 1
United Airlines Logo
5:05 am - 12:01 pm
HRL
-
ONT
8h 56m
2 stops
United Airlines Logo
6:00 am - 4:00 pm
ONT
-
HRL
8h 00m
1 stop
$403United Airlines
Wed, Oct 28 - Sun, Nov 1
United Airlines Logo
5:18 pm - 9:50 pm
HRL
-
ONT
6h 32m
1 stop
United Airlines Logo
6:00 am - 4:00 pm
ONT
-
HRL
8h 00m
1 stop
$424United Airlines
Tue, Nov 17 - Thu, Nov 19
United Airlines Logo
5:18 pm - 9:59 pm
HRL
-
ONT
6h 41m
1 stop
United Airlines Logo
6:00 am - 1:24 pm
ONT
-
HRL
5h 24m
1 stop
$444United Airlines
Sun, Aug 23 - Fri, Aug 28
United Airlines Logo
5:05 am - 3:11 pm
HRL
-
ONT
12h 06m
2 stops
United Airlines Logo
1:52 pm - 3:59 pm
ONT
-
HRL
24h 07m
2 stops
$453United Airlines
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
5:18 pm - 9:50 pm
HRL
-
ONT
6h 32m
1 stop
United Airlines Logo
6:00 am - 4:00 pm
ONT
-
HRL
8h 00m
1 stop
$469United Airlines
Tue, Nov 17 - Thu, Nov 19
United Airlines Logo
7:15 am - 3:11 pm
HRL
-
ONT
9h 56m
2 stops
United Airlines Logo
5:00 am - 9:52 pm
ONT
-
HRL
14h 52m
2 stops
$506United Airlines
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
5:05 am - 3:11 pm
HRL
-
ONT
12h 06m
2 stops
United Airlines Logo
1:52 pm - 9:52 pm
ONT
-
HRL
30h 00m
2 stops
$509United Airlines
Tue, Sep 29 - Wed, Sep 30
United Airlines Logo
5:05 am - 12:01 pm
HRL
-
ONT
8h 56m
2 stops
United Airlines Logo
5:00 am - 4:00 pm
ONT
-
HRL
9h 00m
2 stops
$514United Airlines
Wed, Oct 28 - Sun, Nov 1
United Airlines Logo
5:05 am - 12:42 pm
HRL
-
ONT
9h 37m
2 stops
United Airlines Logo
6:00 am - 4:00 pm
ONT
-
HRL
8h 00m
1 stop
$518United Airlines
Tue, Nov 17 - Thu, Nov 19

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United Airlines flights from Harlingen to Ontario

Our best United Airlines deals on Harlingen to Ontario flight tickets
United Airlines
Oct 28
HRL5:18 pmHarlingen Valley Intl
6h 32m
1 stop
ONT9:50 pmOntario
Nov 1
ONT6:00 amOntario
8h 00m
1 stop
HRL4:00 pmHarlingen Valley Intl
$398
United Airlines
Oct 28
HRL5:05 amHarlingen Valley Intl
8h 56m
2 stops
ONT12:01 pmOntario
Nov 1
ONT6:00 amOntario
8h 00m
1 stop
HRL4:00 pmHarlingen Valley Intl
$403
United Airlines
Nov 17
HRL5:18 pmHarlingen Valley Intl
6h 32m
1 stop
ONT9:50 pmOntario
Nov 19
ONT6:00 amOntario
8h 00m
1 stop
HRL4:00 pmHarlingen Valley Intl
$424

American Airlines flights from Harlingen to Ontario

Our best American Airlines deals on Harlingen to Ontario flight tickets
American Airlines
Jul 20
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jul 29
ONT11:59 pmOntario
8h 13m
1 stop
HRL10:12 amHarlingen Valley Intl
$466
American Airlines
Jul 20
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jul 29
ONT7:15 pmOntario
12h 57m
2 stops
HRL10:12 amHarlingen Valley Intl
$471
American Airlines
Jul 20
HRL8:04 pmHarlingen Valley Intl
5h 55m
1 stop
ONT11:59 pmOntario
Jul 29
ONT7:15 pmOntario
12h 57m
2 stops
HRL10:12 amHarlingen Valley Intl
$504

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 July 15, 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

Wed 10/28

5:18 pm-9:50 pm

1 stop6h 32m

Ontario

Sun 11/1

6:00 am-4:00 pm

1 stop8h 00m

$398

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Wed 10/28

5:05 am-12:01 pm

2 stops8h 56m

Ontario

Sun 11/1

6:00 am-4:00 pm

1 stop8h 00m

$403

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 11/17

5:18 pm-9:50 pm

1 stop6h 32m

Ontario

Thu 11/19

6:00 am-4:00 pm

1 stop8h 00m

$424
Quickest round-trip

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Sun 8/23

5:18 pm-9:59 pm

1 stop6h 41m

Ontario

Fri 8/28

6:00 am-1:24 pm

1 stop5h 24m

$444

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

5:05 am-3:11 pm

2 stops12h 06m

Ontario

Wed 9/30

1:52 pm-3:59 pm

2 stops24h 07m

$453

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 11/17

5:18 pm-9:50 pm

1 stop6h 32m

Ontario

Thu 11/19

6:00 am-4:00 pm

1 stop8h 00m

$469

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

7:15 am-3:11 pm

2 stops9h 56m

Ontario

Wed 9/30

5:00 am-9:52 pm

2 stops14h 52m

$506

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 9/29

5:05 am-3:11 pm

2 stops12h 06m

Ontario

Wed 9/30

1:52 pm-9:52 pm

2 stops30h 00m

$509

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Wed 10/28

5:05 am-12:01 pm

2 stops8h 56m

Ontario

Sun 11/1

5:00 am-4:00 pm

2 stops9h 00m

$514

HarlingenOntario

HRL - ONT

HRLONT

Harlingen Valley Intl

Tue 11/17

5:05 am-12:42 pm

2 stops9h 37m

Ontario

Thu 11/19

6:00 am-4:00 pm

1 stop8h 00m

$518

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 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?

Southwest 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 58% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 4 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 05m

Direct flights

None
The fastest flight from Harlingen to Ontario takes 6h 05m
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 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 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.

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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