ABE - SJU

$138 Find Cheap Flights from Allentown to San Juan

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 San Juan departing on 4/11. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Juan Luis Munoz Marin Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Allentown to San Juan, 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 Allentown to San Juan, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$314
Overall average: $477
Multiple Airlines
Mon 4/13Wed 4/22
ABE - SJU • 1 stop
Cheapest one-way
$138
Typical prices: $165-$283
Delta
Sat 4/11
ABE - SJU • 1 stop
Top airlines
Cheapest • from $321 (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 Allentown and San Juan. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $435 (round-trip)
Shortest trip • 6h 52m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 40% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Juan!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Allentown to San Juan (ABE-SJU)

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

Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
1:41 pm - 11:49 am
ABE
-
SJU
22h 08m
1 stop
Multiple Airlines Logo
8:27 pm - 2:56 pm
SJU
-
ABE
18h 29m
1 stop
$314Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
1:41 pm - 11:49 am
ABE
-
SJU
22h 08m
1 stop
Multiple Airlines Logo
8:27 pm - 2:56 pm
SJU
-
ABE
18h 29m
1 stop
$319Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
1:41 pm - 11:49 am
ABE
-
SJU
22h 08m
1 stop
Multiple Airlines Logo
8:27 pm - 2:56 pm
SJU
-
ABE
18h 29m
1 stop
$320Multiple Airlines
Wed, Apr 15 - Wed, Apr 22
American Airlines Logo
6:04 am - 8:51 pm
ABE
-
SJU
14h 47m
1 stop
American Airlines Logo
11:38 am - 12:22 am
SJU
-
ABE
12h 44m
1 stop
$321American Airlines
Tue, Aug 11 - Sat, Aug 22
American Airlines Logo
1:56 pm - 10:56 pm
ABE
-
SJU
9h 00m
1 stop
American Airlines Logo
3:50 pm - 10:35 pm
SJU
-
ABE
6h 45m
1 stop
$342American Airlines
Mon, May 4 - Thu, May 7
Multiple Airlines Logo
3:25 pm - 8:49 am
ABE
-
SJU
17h 24m
1 stop
Multiple Airlines Logo
6:46 pm - 8:10 pm
SJU
-
ABE
25h 24m
2 stops
$346Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
1:41 pm - 8:53 am
ABE
-
SJU
19h 12m
2 stops
Multiple Airlines Logo
8:27 pm - 2:56 pm
SJU
-
ABE
18h 29m
1 stop
$350Multiple Airlines
Mon, May 4 - Wed, May 6
Multiple Airlines Logo
3:25 pm - 11:52 am
ABE
-
SJU
20h 27m
1 stop
Multiple Airlines Logo
3:03 am - 2:56 pm
SJU
-
ABE
11h 53m
1 stop
$352Multiple Airlines
Mon, Apr 13 - Wed, Apr 22
Multiple Airlines Logo
1:41 pm - 8:53 am
ABE
-
SJU
19h 12m
2 stops
Multiple Airlines Logo
8:27 pm - 2:56 pm
SJU
-
ABE
18h 29m
1 stop
$355Multiple Airlines
Sun, Apr 26 - Wed, Apr 29
American Airlines Logo
6:04 am - 9:15 pm
ABE
-
SJU
15h 11m
1 stop
American Airlines Logo
7:25 am - 12:22 am
SJU
-
ABE
16h 57m
1 stop
$356American Airlines
Booking Insights

KAYAK's insights & trends for Allentown to San Juan flights

Get data-powered insights and trends into flights from Allentown to San Juan 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 San Juan Luis Munoz Marin Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Allentown to San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport is November, where tickets cost $319 (return) on average. On the other hand, the most expensive months are September and June, where the average cost of round-trip tickets is $1,475 and $569 respectively.

How far in advance should I book a flight from Allentown to San Juan Luis Munoz Marin Intl Airport?

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 San Juan Luis Munoz Marin Intl Airport, 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 San Juan Luis Munoz Marin Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$138
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from Allentown to San Juan

When to book flights from Allentown to San Juan

Are your dates flexible? Find out the best times to travel from Allentown to San Juan 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 Allentown to San Juan flights

  • What is the cheapest flight from Allentown to San Juan Luis Munoz Marin Intl Airport?

    In the last 3 days, the lowest price for a flight from Allentown to San Juan Luis Munoz Marin Intl Airport was $138 for a one-way ticket and $314 for a round-trip.

  • Do I need a passport to fly between Allentown and San Juan?

    Yes

  • Which aircraft models fly most regularly from Allentown to San Juan?

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

  • Which airline alliances offer flights from Allentown to San Juan?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Allentown and San Juan, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Allentown to San Juan, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Allentown to San Juan are Delta and United Airlines. With an average price for the route of $486 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $520 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Allentown to San Juan?

    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 San Juan.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Juan from Allentown 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 San Juan?

    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 San Juan with an airline and back to Allentown with another airline. Booking your flights between Allentown and SJU 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 Allentown to San Juan?

    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 San Juan from Allentown 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 San Juan

 
See real verified KAYAK customer reviews for airlines flying from Allentown to San Juan. 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 Allentown to San Juan? 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 8318 reviews
7.9Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

Kayak botched up the booking, i had to call delta and fix. In the process Delta failed to honor my comfort plus seat assignment that i had previously.

2.0 MediocreSreekumar, Mar 2026
FLL - DTW
Read more Delta reviews

Kayak botched up the booking, i had to call delta and fix. In the process Delta failed to honor my comfort plus seat assignment that i had previously.

Entertainment is ok! Boarding and seat with zone is terrible. I paid for the seats but you didn’t give me what I paid for which is exit isles.

the crew cancel the morning service due to the weather. Then the flight got deverted to Nashville . we were on the ground for over two hours the only gave us water once... no food or any snacks.... the crew should have handled better and offered something to passengers.

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

Delta needs to step its game up get a more reliable internet service. Internet service was non-existent for this flight.

Mechanical Delay of over an hour with multiple gate changes. Entertainment system down for rejuvenation.

This was a Latam operated flight. Seats seemed a bit narrow in business class. Older aircraft.

I had a flight cancel and had it rerouted. When the rerouted they put me at a window seat instead of an isle. It was hard sitting by the window because the couple with masks on were making out. I get motion sickness which is why I need to have the isle seat.

NEVER MADE THE FLIGHT BECAUSE DELTA SAID THEY CAN NOT

No seat back entertainment. And app had a hard time getting entertainment loaded.

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

Experience was great - no complaints. Took off on time, landed early. Got to the gate relatively quickly - took a little bit of extra time to deplane but nothing excessive.

Business class seats felt very cramped compared to other airlines.

Economy plus was so cramped I could not use my laptop. It was beyond bad.

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

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

This flight captain and crew were amazing, started ahead of time of departure and reached 30 mins before arrival time. Amazing!

Long delays, lack of information about the status of the flight. The flight was delayed 4 times.

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.

Our flight was canceled. I will never use Kayak nor Frontier for travel again. The entire experience was a headache.

Frontier.. nickel and dime add-ons. Flight late, on time, late again, last minute gate change, arrival gate required a shuttle to the terminal. They sure keep you guessing.. if you like a little chaos and airport anxiety, this is the airline for you!

Everything you need to know for your flight from Allentown to San Juan

Information on your arrival and departure airports