HRL - ONT

$166 Find Cheap Flights from Harlingen to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Harlingen to Ontario departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Ontario, as well as popular online travel agencies
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Flights Deals

Cheap Flight Deals from Harlingen to Ontario (HRL-ONT)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Harlingen to Ontario

KAYAK's recommended round-trip deals from the most popular airlines that fly from Harlingen to Ontario.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
2:07 pm - 10:45 pmHRL-ONT
10h 38m2 stops
United Airlines Logo
6:00 am - 1:25 pmONT-HRL
5h 25m1 stop
$336United Airlines
Find Deal
Sat, May 31 - Tue, Jun 3
United Airlines Logo
2:07 pm - 10:45 pmHRL-ONT
10h 38m2 stops
United Airlines Logo
5:10 am - 7:25 pmONT-HRL
12h 15m2 stops
$341United Airlines
Find Deal
Sat, May 31 - Tue, Jun 3
United Airlines Logo
5:20 pm - 9:10 pmHRL-ONT
5h 50m1 stop
United Airlines Logo
6:00 am - 1:20 pmONT-HRL
5h 20m1 stop
$400United Airlines
Find Deal
Tue, Jun 3 - Fri, Aug 1
United Airlines Logo
5:20 pm - 9:10 pmHRL-ONT
5h 50m1 stop
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
$405United Airlines
Find Deal
Sat, May 31 - Tue, Jun 3
United Airlines Logo
5:20 pm - 9:10 pmHRL-ONT
5h 50m1 stop
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
$409United Airlines
Find Deal
Sat, Jun 7 - Sun, Jun 15
United Airlines Logo
5:10 am - 9:10 pmHRL-ONT
18h 00m1 stop
United Airlines Logo
6:00 am - 1:25 pmONT-HRL
5h 25m1 stop
$448United Airlines
Find Deal
Mon, Jun 2 - Tue, Jun 10
United Airlines Logo
5:10 am - 12:31 pmHRL-ONT
9h 21m2 stops
United Airlines Logo
5:05 am - 7:35 pmONT-HRL
12h 30m2 stops
$469United Airlines
Find Deal
Tue, Jun 3 - Fri, Aug 1
United Airlines Logo
5:20 pm - 9:10 pmHRL-ONT
5h 50m1 stop
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
$478United Airlines
Find Deal
Fri, Jun 6 - Sun, Jun 15
United Airlines Logo
9:47 am - 9:10 pmHRL-ONT
13h 23m1 stop
United Airlines Logo
5:10 am - 7:25 pmONT-HRL
12h 15m2 stops
$487United Airlines
Find Deal
Mon, Jun 2 - Tue, Jun 10
United Airlines Logo
9:47 am - 9:04 pmHRL-ONT
13h 17m2 stops
United Airlines Logo
6:00 am - 4:00 pmONT-HRL
8h 00m1 stop
$488United Airlines
Find Deal
Sat, Jun 7 - Sun, Jun 15
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KAYAK's insights & trends for Harlingen to Ontario flights

Get data-powered insights and trends into flights from Harlingen to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Harlingen to Ontario?

The average price of all round-trip flights from Harlingen to Ontario clicked on KAYAK for each day over the last 12 months.

When flying from Harlingen to Ontario, you should consider leaving on a Sunday and avoid Thursdays if you are looking for the best rates. For your return to Harlingen, you’ll find the best rates on Sundays and the most expensive ones on Mondays.

Good to know

Cheapest flight$166
Flight from Harlingen to Ontario

When to book flights from Harlingen to Ontario

Are your dates flexible? Find out the best times to travel from Harlingen to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Harlingen to Ontario

  • What is the cheapest flight from Harlingen to Ontario?

    In the last 3 days, the lowest price for a flight from Harlingen to Ontario was $166 for a one-way ticket and $336 for a round-trip.

  • Do I need a passport to fly between Harlingen and Ontario?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Harlingen to Ontario?

    Harlingen airport is called Harlingen Valley Intl and the only airport in Ontario is Ontario.

  • Which aircraft models fly most regularly from Harlingen to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Harlingen to Ontario?

    Star Alliance is the only airline alliance operating flights between Harlingen and Ontario.

  • How does KAYAK find such low prices on flights from Harlingen to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Harlingen to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Harlingen to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Harlingen is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Harlingen to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Harlingen with another airline. Booking your flights between Harlingen and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Harlingen to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Harlingen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top airlines flying from Harlingen to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Harlingen to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4294 reviews
7.6Entertainment
8.6Crew
8.2Boarding
7.1Food
8.0Comfort
Airline reviews

It was a perfect flight in all aspects! Both legs!

10.0 ExcellentAnonymous, Apr 2025LGB - SMF
Read more Southwest reviews

It was a perfect flight in all aspects! Both legs!

Boarding process, crew were good. But the seats were so uncomfortable that was all I could focus on. I literally had to sit forward so that all 3 of us could fit in row. I will try to avoid Southwest in the future for any flights over 60 minutes.

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

Great experience flying Southwest. The crew was really kind and helpful, and very friendly with our toddler.

Plane late from DC to Austin 30 minutes. Crew made up much of the time enroute to San Diego.

Fine, but how to board on SW versus othrr airlines, is just lame. Goood staff though and all was solid otherwise.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a not a great airport.

Was as expected. Crowed planes. Too many carryons delaying takeoff. But the ride only took an hour and saved me a lot of time SFO is a hell hole of an airport. It is the new LaGuardia. Everything Cobbled together. Security gates closed. Terri directional signage

I will be flying again Southwest Airlines. Friendly crew, comfortable and affordable.

The plane arrived 25 minutes late, and the Wi-Fi was slower than it usually is.

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Flight boarded from Gate 39 at OGG, the farthest gate in the terminal. There were no Hawaiian themed amenities for the flight. The first class service was mediocre at best; I received not special welcome or recognition as an executive platinum member of American Advantage program. The flight attendants were more concerned with their cell phones than saying "thank you" to the passengers as we disembarked. Fortunately, the flight arrived at LAX a few minutes early.

Bigger seats. Board back to front! Disembark front to back!

Extraordinary service in business class, and very good breakfast and snacks. A really lovely flight.

This flight didn’t happen because AA agents didn’t let us board the flight

Plane was pretty clean, staff was friendly and helpful, flight left about on time arrived early. Took a long time to board and get off the plane - carry on items didn't have enough room so people had to move all around to find places.

The service and food needs to improve to catch up with other international flights

Would have been good to have a meal since it was a 5.5 hour flight

We boarded after several delays due to mechanical failure and a gate change. The seat cushion in the exit row was very compressed and offered no cushion, making the four-hour journey reasonably uncomfortable. The WiFi worked for a few people, but for most, it did not, and you cannot get entertainment unless you can connect—American Airlines flights do not have seatback screens, and you must use your mobile phone.

AA is always pretty solid. Was on time all the way around today so can’t complain!

Everything you need to know for your flight from Harlingen to Ontario

Information on your arrival and departure airports

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