$168 Find Cheap Flights from Harlingen to Puerto Rico

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 Puerto Rico departing on 8/11. 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

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Cheap Flights from Harlingen to Puerto Rico

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Puerto Rico 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 Harlingen to Puerto Rico

Sat, Sep 13 - Thu, Sep 18
American Airlines Logo
6:30 pm - 2:53 pmHRL-SJU
19h 23m2 stops
American Airlines Logo
6:10 am - 10:52 pmSJU-HRL
17h 42m2 stops
$315American Airlines
Find Deal
Fri, Sep 12 - Thu, Sep 18
American Airlines Logo
5:46 am - 11:37 pmHRL-SJU
16h 51m2 stops
American Airlines Logo
1:36 pm - 9:41 amSJU-HRL
21h 05m2 stops
$355American Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
United Airlines Logo
5:25 pm - 2:44 pmHRL-SJU
20h 19m2 stops
United Airlines Logo
1:05 am - 10:50 amSJU-HRL
10h 45m2 stops
$414United Airlines
Find Deal
Sat, Sep 13 - Wed, Sep 17
United Airlines Logo
5:25 pm - 8:38 pmHRL-SJU
26h 13m1 stop
United Airlines Logo
1:05 am - 10:50 amSJU-HRL
10h 45m2 stops
$426United Airlines
Find Deal
Fri, Jul 18 - Mon, Jul 21
Southwest Logo
2:15 pm - 12:55 amHRL-SJU
9h 40m2 stops
Southwest Logo
5:50 pm - 11:50 pmSJU-HRL
7h 00m1 stop
$520Southwest
Find Deal
Fri, Sep 12 - Wed, Sep 17
United Airlines Logo
5:00 am - 3:42 pmHRL-SJU
9h 42m1 stop
United Airlines Logo
1:05 am - 10:50 amSJU-HRL
10h 45m2 stops
$522United Airlines
Find Deal
Sat, Jul 19 - Fri, Jul 25
United Airlines Logo
5:10 am - 8:38 pmHRL-SJU
14h 28m1 stop
United Airlines Logo
1:10 am - 1:20 pmSJU-HRL
13h 10m2 stops
$592United Airlines
Find Deal
Wed, Jul 2 - Sat, Jul 5
Southwest Logo
9:45 am - 10:25 pmHRL-SJU
11h 40m1 stop
Southwest Logo
11:40 am - 9:15 pmSJU-HRL
10h 35m2 stops
$655Southwest
Find Deal
Thu, Aug 14 - Sun, Aug 17
 Logo
7:10 am - 11:50 amHRL-SJU
27h 40m2 stops
 Logo
7:00 am - 4:00 pmSJU-HRL
10h 00m1 stop
Thu, Aug 14 - Sat, Aug 16
 Logo
7:10 am - 11:30 amHRL-SJU
27h 20m2 stops
 Logo
1:05 am - 1:20 pmSJU-HRL
13h 15m2 stops
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KAYAK's insights & trends for Harlingen to Puerto Rico flights

Get data-powered insights and trends into flights from Harlingen to Puerto Rico 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 Puerto Rico?

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

Your flight ticket price will generally be cheaper if you fly to Puerto Rico on a Wednesday and more expensive on a Friday. On your return trip to Harlingen, you should consider flying back on a Sunday, and avoid Saturdays for better deals.


Good to know

High seasonMarch
Cheapest flight$168
Most popular time to fly with an average 11% increase in price.
Flight from Harlingen to San Juan

FAQs - booking Puerto Rico flights

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

    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 Puerto Rico.

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

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

    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 from Harlingen to Puerto Rico with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to Puerto Rico?

    The cheapest time of day to fly to Puerto Rico is generally at night, when round-trip flights cost $537 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Puerto Rico is generally in the morning, which is peak travel time and where the average cost of a ticket is $626.

Top 3 airlines serving from Harlingen to Puerto Rico

 
Need help choosing which airline to fly with from Harlingen to Puerto Rico? 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 4278 reviews
7.1Food
8.6Crew
7.6Entertainment
8.2Boarding
8.0Comfort
Airline reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

10.0 ExcellentMichael, Jun 2025SMF - SEA
Read more Southwest reviews

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

I'm not a fan of Southwest's model. I don't like the herding style of boarding.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

Plz don't take away free bags and free seating

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.

Gate agent did not hold flight for connection, provided no assistance to get new flight

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Food choices were very limited. Taste of the dishes was average.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

Oh my gosh, I loved my experience with United! they made me want to travel more often.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

Took off on time and successfully avoided weather that looked to be a problem along the way

I liked everything. Except that my neck was hurting on the seat. I couldn't sleep.

We were delayed Al ost / hours after boarding so that maintenance had to add oil to the engines. Then the oil they grabbed had been left out in the Dallas record cold and was frozen. They had to go back to the hanger and grab some that was not frozen.

They changed my seat from one that I had paid for as an upgrade to a regular seat at the last minute.

Flight was empty so had a whole row to myself. Still had to wait to get the bag due to the negligence at Palm Springs departure.

Everything you need to know for your flight from Harlingen to Puerto Rico

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