ONT - HRL

$188 Find Cheap Flights from Ontario to Harlingen

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Harlingen departing on 7/24. 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
1 adult, Economy, 0 bags

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

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

Cheapest round-trip
$257
Southwest
Sat 8/22Sat 8/29
ONT - HRL • 1 stop
Cheapest one-way
$188
American Airlines
Fri 7/24
ONT - HRL • 1 stop
Top airlines
Cheapest • from $257 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Harlingen. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $263 (round-trip)
Shortest trip • 7h 16m (one-way)
Insights
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We hope you love your trip to Harlingen!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Harlingen (ONT-HRL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Harlingen 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Harlingen

Sat, Aug 22 - Sat, Aug 29
Southwest Logo
7:05 am - 2:55 pm
ONT
-
HRL
5h 50m
1 stop
Southwest Logo
11:30 am - 4:00 pm
HRL
-
ONT
6h 30m
1 stop
$257Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
10:15 am - 6:50 pm
ONT
-
HRL
6h 35m
2 stops
Southwest Logo
6:05 am - 9:35 am
HRL
-
ONT
5h 30m
1 stop
$262Southwest
Sat, Aug 22 - Sat, Aug 29
Southwest Logo
5:40 am - 3:50 pm
ONT
-
HRL
8h 10m
2 stops
Southwest Logo
6:05 am - 11:15 am
HRL
-
ONT
7h 10m
2 stops
$267Southwest
Thu, Oct 1 - Mon, Oct 5
American Airlines Logo
2:22 pm - 10:48 pm
ONT
-
HRL
6h 26m
1 stop
American Airlines Logo
6:42 pm - 11:52 pm
HRL
-
ONT
7h 10m
1 stop
$373American Airlines
Sat, Jul 25 - Fri, Jul 31
American Airlines Logo
11:59 pm - 10:12 am
ONT
-
HRL
8h 13m
1 stop
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
$377American Airlines
Sat, Aug 22 - Sat, Aug 29
American Airlines Logo
10:29 am - 6:13 pm
ONT
-
HRL
5h 44m
1 stop
American Airlines Logo
3:17 pm - 6:58 pm
HRL
-
ONT
5h 41m
1 stop
$380American Airlines
Sat, Jul 25 - Fri, Jul 31
American Airlines Logo
1:11 pm - 10:12 am
ONT
-
HRL
19h 01m
2 stops
American Airlines Logo
8:04 pm - 11:59 pm
HRL
-
ONT
5h 55m
1 stop
$448American Airlines
Wed, Sep 30 - Sun, Oct 4
American Airlines Logo
8:25 am - 4:58 pm
ONT
-
HRL
6h 33m
1 stop
American Airlines Logo
8:00 pm - 11:36 pm
HRL
-
ONT
5h 36m
1 stop
$451American Airlines
Thu, Oct 1 - Mon, Oct 5
United Airlines Logo
6:00 am - 3:59 pm
ONT
-
HRL
7h 59m
1 stop
United Airlines Logo
5:18 pm - 3:11 pm
HRL
-
ONT
23h 53m
2 stops
$466United Airlines
Sat, Jul 25 - Fri, Jul 31
Southwest Logo
5:30 am - 2:05 pm
ONT
-
HRL
6h 35m
2 stops
Southwest Logo
7:10 am - 12:45 pm
HRL
-
ONT
7h 35m
2 stops
$507Southwest
Booking Insights

KAYAK's insights & trends for Ontario to Harlingen flights

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

Which airlines provide the cheapest flights from Ontario to Harlingen?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 5 days.

In the past 5 days, the cheapest round-trip tickets from Ontario to Harlingen were found on Southwest ($257) and American Airlines ($373).

Good to know

Cheapest flight$188
Flight from Ontario to Harlingen

When to book flights from Ontario to Harlingen

Are your dates flexible? Find out the best times to travel from Ontario to Harlingen 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 Ontario to Harlingen

  • What is the cheapest flight from Ontario to Harlingen?

    In the last 5 days, the lowest price for a flight from Ontario to Harlingen was $188 for a one-way ticket and $257 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Ontario to Harlingen?

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

  • Which is the best airline for flights from Ontario to Harlingen, Southwest or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Harlingen are Southwest and American Airlines. With an average price for the route of $263 and an overall rating of 7.9, Southwest is the most popular choice. American Airlines is also a great choice for the route, with an average price of $487 and an overall rating of 7.1.

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

    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 Ontario to Harlingen.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Harlingen from Ontario 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 Ontario to Harlingen?

    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 Harlingen with an airline and back to Ontario with another airline. Booking your flights between Ontario and HRL 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 Ontario to Harlingen?

    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 Harlingen from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Harlingen

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Harlingen. 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 Ontario to Harlingen? 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.
7.9
SouthwestOverall score based on 4246 reviews
8.6Crew
8.1Boarding
8.0Comfort
7.5Entertainment
7.0Food
Airline reviews

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

6.0 GoodAnonymous, Jun 2026
TPA - DAL
Read more Southwest reviews

SW can't get their wifi right. I upgrade to insure wifi service but the last two trips had intermittent service. Not worth the extra costs.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

The seat was not comfortable. 1D. My back was sore all night and the next day.

Great flight but super high price. Glad it was a business trip and not personal

Service was great, boarding and exiting went smoothly, and the flight was very pleasant.

The crew and flight went well. My issue was internal communications. I had a connecting flight that initially was changed to a later time since first flight was delayed, then they changed back to original time because “the captain thought hed make it”. Upon arrival at connecting airport, the flight attendant assured that the connecting flight was still there and I should run to the gate after deplaning…well that was inaccurate. The plane had departed and gate was empty. I was stuck at airport 4 hours hungry and irritated and also had to again cancel my transportation plans at destination. After informing the help desk I was given a dry oh well and a measly $15 food voucher that barely could afford anything at that airport.

I liked receiving attention from aged and well experienced flight attendants. I disliked the non-gluten-free snack but I brought my own so I was OK.

There were over 40 people in the “preboard” group. It’s not fair for southwest to charge for an upgraded boarding fee (a1-a15) and then let over 40 people board before.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

The gate experience at LAX was abysmal (same for the arrival experience two days prior). Despite the LAX -> SAT schedule of two flights daily, our departure gate was at a smaller hub that we had to be bussed to from Terminal 4. Fortunately, I arrived at LAX extra early and had time to spare, but if I had not known, I might have missed my flight. I looked at the LAX airport map in the AA app and there was no indication of the additional boarding process. Lastly the gate area we were bussed to was crowded with limited food and beverage options. On flight, the fight attendant was hospitable and attentive, the flight was smooth, and AA's free (and working) wifi for AA members were all on the positive side.

Ontario airport boarding was very easy to park and access, is clean and TSA took 10 minutes total. Check-in was a breeze and cruise was very nice.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

Terrible planning. And even worse gate agents. Absolutely rude behavior.

Rough flight No beverage service due to turbulence Bottom Seat cushion was non existent

The flight was on time and arrived early. The crew were friendly and helpful.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

VERY disappointed at the agent checking in my luggage. I know that the weight limit is 23 kg, a little over 50 pounds (50.71 pounds). Yet the agent kept repeating "50 pounds". So I said, the limit is 23 kg, and she had the audacity to say 'no, it is 22 kg!" Imagine my surprise. Was she ignorant or was she poorly trained? Not sure. The boarding process was pretty good. The speakers were loud enough so I still could hear them despite inconsiderate passengers continuing to speak while the announcements were going on. During the flight, the teenage girl sitting behind me kept pressing her feet to the back of my chair. I turned around several times, yet she did not get the hint. I did not make a fuss since I sense I had a bad streak that night with AA, so I just did the best I can to lean forward and not let that bother me.

It was wonderful upgrading to first. Plane was so cold thou. Crew was great. Wish there was a food option in first for such a long flight. Doesnt matter the time of day. Chintzy.

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

Information on your arrival and departure airports