$151 Find Cheap Flights from Allentown 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 Allentown to Puerto Rico departing on 5/4. 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

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Book Cheap Allentown to Puerto Rico Plane Tickets

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

Thu, Aug 20 - Thu, Aug 27
Delta Logo
6:30 am - 4:35 pm
ABE
-
SJU
10h 05m
1 stop
Delta Logo
1:06 pm - 10:56 pm
SJU
-
ABE
9h 50m
1 stop
$302Delta
Mon, Apr 27 - Fri, May 1
Multiple Airlines Logo
1:41 pm - 9:30 am
ABE
-
SJU
19h 49m
2 stops
Multiple Airlines Logo
6:00 am - 8:10 pm
SJU
-
ABE
14h 10m
1 stop
$310Multiple Airlines
Sat, May 9 - Fri, May 15
American Airlines Logo
6:04 am - 8:51 pm
ABE
-
SJU
14h 47m
1 stop
American Airlines Logo
7:25 am - 12:22 am
SJU
-
ABE
16h 57m
1 stop
$327American Airlines
Sat, Sep 26 - Wed, Sep 30
Delta Logo
1:00 pm - 10:00 pm
ABE
-
SJU
9h 00m
1 stop
Delta Logo
2:26 pm - 10:56 pm
SJU
-
ABE
8h 30m
1 stop
$338Delta
Fri, May 1 - Fri, May 8
Multiple Airlines Logo
1:41 pm - 12:54 am
ABE
-
SJU
35h 13m
2 stops
Multiple Airlines Logo
11:00 am - 8:10 pm
SJU
-
ABE
9h 10m
1 stop
$340Multiple Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
7:30 am - 11:54 pm
ABE
-
SJU
16h 24m
2 stops
Multiple Airlines Logo
6:00 am - 11:06 pm
SJU
-
ABE
17h 06m
1 stop
$344Multiple Airlines
Fri, Apr 24 - Sat, May 2
American Airlines Logo
6:04 am - 8:51 pm
ABE
-
SJU
14h 47m
1 stop
American Airlines Logo
7:25 am - 12:22 am
SJU
-
ABE
16h 57m
1 stop
$354American Airlines
Mon, Jun 1 - Fri, Jun 5
Multiple Airlines Logo
7:30 am - 3:55 pm
ABE
-
SJU
8h 25m
1 stop
Multiple Airlines Logo
6:00 am - 11:06 pm
SJU
-
ABE
17h 06m
1 stop
$367Multiple Airlines
Thu, Aug 6 - Thu, Aug 13
Delta Logo
1:08 pm - 10:29 pm
ABE
-
SJU
9h 21m
1 stop
Delta Logo
1:06 pm - 10:56 pm
SJU
-
ABE
9h 50m
1 stop
$374Delta
Fri, Apr 24 - Sat, May 2
American Airlines Logo
6:04 am - 8:51 pm
ABE
-
SJU
14h 47m
1 stop
American Airlines Logo
7:25 am - 12:22 am
SJU
-
ABE
16h 57m
1 stop
$385American Airlines
Booking Insights

KAYAK's insights & trends for Allentown to Puerto Rico flights

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

What is the cheapest month to fly from Allentown to Puerto Rico?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to Puerto Rico, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Allentown to Puerto Rico is November, when tickets cost $319 (return) on average. On the other hand, the most expensive months are September and June, when the average cost of round-trip tickets is $1,475 and $659 respectively.

How far in advance should I book a flight from Allentown to Puerto Rico?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Allentown to Puerto Rico, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Allentown to Puerto Rico, you should book around 3 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$158
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Allentown to San Juan

FAQs - booking Puerto Rico flights

  • How does KAYAK find such low prices on flights from Allentown 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 Allentown to Puerto Rico.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Allentown 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 Allentown 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 Allentown 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 Allentown 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 Allentown to Puerto Rico up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Allentown to Puerto Rico

 
Need help choosing which airline to fly with from Allentown 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.
7.9
DeltaOverall score based on 8406 reviews
7.2Food
8.5Crew
7.9Comfort
8.1Boarding
7.8Entertainment
Airline reviews

The tray table was broken and the food was terrible.

4.0 OkayJeremy, Apr 2026
BNA - BOS
Read more Delta reviews

The tray table was broken and the food was terrible.

The gentleman at the gate I think his name is RIE was exceptional

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

One of the flight attendants was a little cranky. I appreciated the free wifi and plug to charge my laptop

No entertainment. Plane was so small had to pink tag a carry on ive used for 20 years easily on board. The fact the flight got in at midnight, had to wait for crew in fort wayne to allow the plane to approach the gate, THEN had to wait for bag on jet bridge made experience irritating at best.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

Would have been better if there was a nonstop flight from Tampa to Norfolk or Tampa to New Port News.

Overall Good! The weather delayed our takeoff from Atlanta and our arrival in Miami! If Mother Nature can mess up a flight she will do it every time!

The flight was smooth, the crew was great but the plane was quite old

Everything was great until I lost my water bottle and they can’t seem to locate it. I know I left it on the plane though.

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Vegetarian selection could be better. Bread was too hard to chew.

Crew was friendly and competent. Food, wine, and entertainment were excellent except the raw tuna on the flight to Split. Recommend against serving that - at least as the only option. Many medical conditions do not allow people to eat raw fish.

Overall flight was ok. Flight attendant was receptive to assisting passengers with tight connections.

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

Very comfortable flight, snacks and drinks were good, good communication from crew. Could have used a little more information on timing of boarding for group 5

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

I appreciate that I finally got the seat I paid extra for this time. Thank you

Half of the TSA checkpoints at PHL are closed. Also, there is no standby for first class passengers. You can only standby for coach. Very dated policy and inconsistent with peers.

It would have been nice if American tried to care.

Delayed initially because they couldn’t print the flight details. Poor instruction on delay. When I got on the plane the flight attendant argued with me about whether my carry on would fit (it did, although she didn’t acknowledge that). No greeting (other than arguing with me) getting on or off the plane.

Beverage service was not good. Also just one service in 5 hr 30 min flight. No ask fir water ir anything beside one time beverage service.

They are always late and seats was also not having working charger

Broke my luggage and I can't get a resolution yet.

My flight to London from Philadelphia was cancelled due to weather.

Pilot navigated severe weather/snow storm with skill. Described his intentions clearly

They switched our terminal 3 times and we were delayed for four plus hours!!!

It was an early flight and most people napped/slept and the crew let us which was nice.

The crew acted like they had never done this and kept barking passive aggressive orders at people. + the security line + the delay + sitting on the tarmac for 2 hours + none of the apps or signage updating with correct times

More inflight connection. And leg space is horrible. And the paying for baggage I'd ridiculous!!!

My flight was originally from SAT to MCO connecting from MCO to ORD. We got diverted to ATL and than Frontier staff there was sooo un helpful first they said they couldn’t give us any accommodation since our flight first got delayed that cancelled and now it’s 221am and I am still in ATL since they said they need to create a new flight my final destination is ORD and I have been delayed twice and cancelled. With no real help the frontier app didn’t work no email updates over all such a horrible experience

There's no seats that lean back with little leg space i wad uncomfortable the entire flight. Your charges for extra baggage is despicable and costly!!

Remind customers of the need to have passport or new ID for boarding.

Flight was canceled. Most upsetting was message from Kayak, stating that the flight was canceled and click with Kayak for details regarding rebook, refund details. THERE'S NO INFORMATION PROVIDED BY KAYAK EXCEPT THAT FLIGHT IS CANCELED. AND NOW THIS SURVEY TO FIND OUT HOW WAS THE FLIGHT !!!!!!!

The flight never took off and we spent 7 hours at the airport

Gate not determined until I got to the airport - hard to plan the trip to the airport.

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

Information on your arrival and departure airports