ABE - SJU

$173 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 10/31. 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

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
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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

Thu, Nov 13 - Sat, Nov 15
 Logo
6:00 am - 7:21 pmABE-SJU
12h 21m1 stop
 Logo
2:11 am - 8:52 pmSJU-ABE
19h 41m2 stops
Fri, Oct 31 - Mon, Nov 3
American Airlines Logo
2:43 pm - 10:10 pmABE-SJU
7h 27m1 stop
American Airlines Logo
3:05 pm - 10:52 pmSJU-ABE
8h 47m1 stop
$385American Airlines
Find Deal
Sun, Jan 18 - Wed, Jan 21
Delta Logo
6:30 am - 5:19 pmABE-SJU
9h 49m1 stop
Delta Logo
2:10 pm - 10:52 pmSJU-ABE
9h 42m1 stop
$390Delta
Find Deal
Thu, Nov 13 - Sun, Nov 16
 Logo
6:00 am - 7:21 pmABE-SJU
12h 21m1 stop
 Logo
9:49 pm - 9:23 amSJU-ABE
36h 34m2 stops
Mon, Sep 22 - Fri, Sep 26
 Logo
8:30 am - 2:34 amABE-SJU
18h 04m1 stop
 Logo
9:07 am - 8:40 pmSJU-ABE
11h 33m1 stop
Mon, Sep 22 - Thu, Sep 25
 Logo
8:30 am - 2:34 amABE-SJU
18h 04m1 stop
 Logo
3:39 am - 8:40 pmSJU-ABE
17h 01m1 stop
Sun, Jan 18 - Wed, Jan 21
United Airlines Logo
11:30 am - 6:11 amABE-SJU
17h 41m2 stops
United Airlines Logo
8:35 am - 4:22 pmSJU-ABE
8h 47m1 stop
$415United Airlines
Find Deal
Thu, Sep 25 - Sat, Sep 27
 Logo
4:55 pm - 8:02 amABE-SJU
15h 07m1 stop
 Logo
12:28 am - 10:38 pmSJU-ABE
22h 10m2 stops
Thu, Jan 1 - Sat, Jan 10
Delta Logo
6:00 am - 2:15 pmABE-SJU
7h 15m1 stop
Delta Logo
6:15 am - 1:04 pmSJU-ABE
7h 49m1 stop
$480Delta
Find Deal
Tue, Feb 17 - Tue, Mar 3
United Airlines Logo
11:50 am - 9:00 pmABE-SJU
8h 10m1 stop
United Airlines Logo
2:05 am - 1:55 pmSJU-ABE
12h 50m2 stops
$599United Airlines
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $385 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
January
Cheapest • 35% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$371
Typical prices: $289-570
Multiple Airlines
Thu 11/13Sat 11/15
ABE - SJU • 1 stop
Cheapest one-way
$173
Typical prices: $195-260
American Airlines
Fri 10/31
ABE - SJU • 1 stop
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We hope you love your trip to San Juan!
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.

How much is a round-trip flight from Allentown to San Juan Luis Munoz Marin Intl Airport?

What’s the cheapest day of the week to fly from Allentown to San Juan?

The average price of all round-trip flights from Allentown to San Juan Luis Munoz Marin Intl Airport clicked on KAYAK for each day over the last 12 months.

When flying from Allentown to San Juan, you should consider leaving on a Monday and avoid Sundays if you are looking for the best rates. For your return to Allentown, you’ll find the best rates on Sundays and the most expensive ones on Thursdays.

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 January, where tickets cost $288 (return) on average. On the other hand, the most expensive months are August and December, where the average cost of round-trip tickets is $620 and $549 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 4 weeks before departure.

Good to know

Low seasonJune
Cheapest flight$173
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly and prices are also 4% 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 $173 for a one-way ticket and $371 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?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Allentown and San Juan, with SkyTeam 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 $472 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 $462 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 7960 reviews
7.9Entertainment
7.3Food
7.9Comfort
8.5Crew
8.2Boarding
Airline reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

10.0 ExcellentAnonymous, Sep 2025CLT - BOS
Read more Delta reviews

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

The food was terrible especially for a 15 hour international flight. The crew was unpleasant as well.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Quick check in. Everything went smooth. I don't know what can be done about airline food.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Nothing special. The crew never went out of their way for anything.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

We had to deboard 2 times due to maintenance issues. They changed the plane, and then we got deviated to LAX due to maibtenance issues on the other plane, had to sleep at LAX and los a full day.

Everything was good, except the seats in economy were so close together, you could barely get out when the seat in front of your was reclined. If the airlines keep jamming in more and more seats, it will become intolerable. I will look for another airline that considers customer comfort and does not keep adding more rows of seats for more profit.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

IAD with the archaic people movers is just a place to be avoided.

Great service on board. Boarding a bit slow due to process. Food was pretty average.

Tastless food and too obvious lack of enthusiasm for service in the economy vesus business class

All of the United employees I interacted with were professional and courteous. The aircraft was clean, the food on the flight was good. No complaints here.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

Flight was delayed not sure why no explanation given and no apologies either. Otherwise the flight was fine

Did not get the seat I selected and paid for.

The flight was canceled 3 hours after original take off time

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

The plane was broken so we had to change planes.

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Seats were new and comfortable. Staff was fine. Missed my connection due to weather -which wasn’t their fault- but got no help at all. Gate staff sent me to customer service, which was and stayed unstaffed. Sign with QR code directed me to call or chat. Chat was useless. Call was returned after an hour. No itinerary offered by Frontier could get me home in less than 30 hours. Rebooked with another airline and got a partial refund that came to about 10 percent of what I paid to get home.

Finally a Frontier on time and efficient. I've had problems before with your airline, but this time everything went fine.

The experience was good. No frills but I got there safe and sound and on time.

Great for the price. No wifi or entertainment, but gate agents and crew were fantastic and we boarded quickly and left on time.

sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.

Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.

What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.

As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.

After boarding and un-boarding twice over 6+hours, the flight was canceled.

Severe turbulence. Captain never came on to reassure passengers after things settled down.

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

Information on your arrival and departure airports

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