$166 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 8/19. 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

Mon, Sep 7 - Wed, Sep 30
Multiple Airlines Logo
7:50 pm - 4:11 pm
ABE
-
SJU
20h 21m
1 stop
Multiple Airlines Logo
5:12 pm - 2:21 pm
SJU
-
ABE
21h 09m
1 stop
$293Multiple Airlines
Mon, Aug 24 - Fri, Aug 28
Multiple Airlines Logo
5:25 pm - 4:11 pm
ABE
-
SJU
22h 46m
1 stop
Multiple Airlines Logo
6:35 am - 4:35 pm
SJU
-
ABE
10h 00m
1 stop
$312Multiple Airlines
Fri, Aug 28 - Mon, Aug 31
Multiple Airlines Logo
5:25 pm - 4:11 pm
ABE
-
SJU
22h 46m
1 stop
Multiple Airlines Logo
6:35 am - 5:28 pm
SJU
-
ABE
10h 53m
1 stop
$313Multiple Airlines
Thu, Sep 17 - Sun, Sep 20
Multiple Airlines Logo
3:00 pm - 11:38 pm
ABE
-
SJU
8h 38m
1 stop
Multiple Airlines Logo
8:30 am - 9:37 pm
SJU
-
ABE
13h 07m
2 stops
$360Multiple Airlines
Sat, Aug 22 - Tue, Sep 1
Delta Logo
1:10 pm - 10:29 pm
ABE
-
SJU
9h 19m
1 stop
Delta Logo
12:56 pm - 10:23 pm
SJU
-
ABE
9h 27m
1 stop
$367Delta
Fri, Sep 25 - Sat, Oct 3
Multiple Airlines Logo
8:30 am - 11:57 pm
ABE
-
SJU
15h 27m
2 stops
Multiple Airlines Logo
5:12 pm - 2:31 pm
SJU
-
ABE
21h 19m
1 stop
$397Multiple Airlines
Sun, Nov 22 - Tue, Dec 8
Delta Logo
6:30 am - 5:25 pm
ABE
-
SJU
9h 55m
1 stop
Delta Logo
1:55 pm - 10:46 pm
SJU
-
ABE
9h 51m
1 stop
$405Delta
Wed, Nov 18 - Tue, Nov 24
Delta Logo
1:00 pm - 11:13 pm
ABE
-
SJU
9h 13m
1 stop
Delta Logo
7:00 am - 5:12 pm
SJU
-
ABE
11h 12m
1 stop
$412Delta
Thu, Aug 20 - Wed, Aug 26
American Airlines Logo
4:57 pm - 11:59 pm
ABE
-
SJU
7h 02m
1 stop
American Airlines Logo
7:30 am - 4:27 pm
SJU
-
ABE
8h 57m
1 stop
$414American Airlines
Thu, Aug 27 - Sun, Aug 30
Multiple Airlines Logo
3:05 pm - 2:15 am
ABE
-
SJU
11h 10m
1 stop
Multiple Airlines Logo
5:15 pm - 10:45 am
SJU
-
ABE
17h 30m
1 stop
$417Multiple 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 December, when tickets cost $83 (return) on average. On the other hand, the most expensive months are September and June, when the average cost of round-trip tickets is $477 and $318 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 5 weeks before departure, which saves you about 63% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonSeptember
Cheapest flight$166
Best time to beat the crowds but there is an average 191% increase in price.
Most popular time to fly and prices are also 34% 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 airlines flying 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.
7.8
DeltaOverall score based on 8440 reviews
8.1Boarding
8.5Crew
7.2Food
7.8Comfort
7.8Entertainment
Airline reviews

I was in Comfort and we didn’t get any drinks, chips or anything! First Class got full service on the flight and Comfort got nothing. Seat was horrible and uncomfortable

4.0 OkayLinda, Jun 2026
BNA - ATL
Read more Delta reviews

I was in Comfort and we didn’t get any drinks, chips or anything! First Class got full service on the flight and Comfort got nothing. Seat was horrible and uncomfortable

Connection flights should be spaced out farther because too close I missed my connection.

The flight was way too HOT! And the plane did not have any in-flight TV entertainment.

It was good. The leg room was not great in Row 1.

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

We splurged and decided to fly first class. Seats were roomy. But flight crew arrived late to the airport. That delayed our flight. Most of the passengers had to try to make connections flights. I felt bad for them. We checked 4 bags. We got three from the baggage claim carousel. 4th one was lost. Delta online help wasn’t good. Baggage claim staff were sympathetic and nice but we waited around for almost 2 hours and it had t been found. They did find it several hours later and we had to drive back to airport to retrieve it. I won’t be splurging on 1st. Lass again anytime soon. I think we got worse service. I am also not a huge fan of delta but we have family in ATL so we don’t have a ton of choice. What should have been an easy flight turned into a stressful event due to flight crew tardiness and baggage mishandling.

My flight consistently said it was on time and the plane didn’t arrive until after 30 minutes after take off and nothing was announced to passengers

When we checked in my friend and I were sitting seperate. By the time we got to boarding, they automatically switched our seats. I really liked that.

I trust Delta. I travel comfortable. The snacks could improve or could go to something as a little sandwich.

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

Delayed delayed. Poor professionalism. Our seats changed and we pay for them

Fine. Nothing to write home about. The plane left on time, and arrived on time.

Seat comfort was poor (no lumbar or lower back support).

Flight left early and arrived 30 MINUTES early at the destination. Smooth trip.

Flight was 3 hours delayed. They gave our plan to two other routes. Need to knock that off.

The captain announced to the cabin there would be a delay because they observed a "cut" on a tire during precheck that needed to be cleared by maintenance. We were delayed during this inspection and allowed to proceed after maintenance "measured the cut and decided it was acceptable". My complaint is not about the delay or due diligence. I wish the captain had been more generic when making his announcement. I was a nervous wreck all the way to Charlotte worried that we would have a blowout when landing!

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

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

The airline schedule services was simply mediocre. The ground crew is fine; they are doing their best. The after-delay services were simply poor, and after-cancelling services were almost non-existence. Receiving refund is one rescuing point, but please keep in mind that, people wants to get home or get to their destinations. Cancelling without aftermath recourse is simply poor services. AA needs to fire the marketing department, and the customer-service related leaders.

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

Information on your arrival and departure airports