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$138+ Cheap flights from Allentown (ABE) to San Juan

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SJU
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Allentown-Bethlehem to San Juan are usually found in January or September, booked 63 days in advance, depart on a Monday or Saturday and return on a Friday

Cheap flight deals from Allentown to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Allentown (ABE) to San Juan (PR1). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$245
(American Airlines)

One-way from

$138
(Delta)

Popular in

August

Cheapest in

January

Average price

$462
From Allentown-Bethlehem to San Juan
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One-way flight from Allentown-Bethlehem to San Juan
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Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Allentown to San Juan

Cheapest flights from Allentown to San Juan
Explore the most affordable flight options available from Allentown to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This American Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:12 amABE - SJU
1 stop6h 13mAmerican Airlines
Tue 12/1612:45 pmSJU - ABE
1 stop12h 32mAmerican Airlines
Deal found 7/27$245
This Mytrip deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/314:03 pmABE - SJU
1 stop8h 53mMultiple Airlines
Wed 9/31:59 amSJU - ABE
1 stop10h 11mMultiple Airlines
Deal found 7/29$352
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3012:48 pmABE - SJU
1 stop9h 12mDelta
Thu 10/212:58 pmSJU - ABE
1 stop9h 43mDelta
Deal found 7/28$477

Cheapflights Fare Finder

 
Customize your flight search to find flights from Allentown to San Juan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Allentown to San Juan that are best for you.

Fly from

Allentown

Fly to

San Juan

Route

Depart

Return

Price

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 12/9

6:12 am-1:25 pm

1 stop6h 13m

San Juan Luis Munoz Marin Intl

Tue 12/16

12:45 pm-12:17 am

1 stop12h 32m

$245

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 8/31

4:03 pm-12:56 am

1 stop8h 53m

San Juan Luis Munoz Marin Intl

Wed 9/3

1:59 am-12:10 pm

1 stop10h 11m

$352

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 9/30

12:48 pm-10:00 pm

1 stop9h 12m

San Juan Luis Munoz Marin Intl

Thu 10/2

12:58 pm-10:41 pm

1 stop9h 43m

$477

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sat 1/24

6:44 am-10:22 pm

2 stops14h 38m

San Juan Luis Munoz Marin Intl

Sun 2/1

8:35 am-5:01 pm

1 stop9h 26m

$483

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sat 9/27

12:48 pm-10:00 pm

1 stop9h 12m

$138

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Wed 12/31

2:30 pm-6:11 am

2 stops14h 41m

$256

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Wed 10/1

6:00 am-3:52 pm

1 stop9h 52m

$271

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Fri 9/5

3:37 pm-2:11 pm

3 stops22h 34m

$281

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Best time to book a flight from Allentown to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Allentown with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

How far ahead should I book a flight from Allentown to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Allentown to San Juan. Price data was last updated on July 25, 2025.

The price you pay for your flight from Allentown to San Juan may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Allentown to San Juan?

Currently, September is the cheapest month in which you can book a flight from Allentown to San Juan (average of $254). Flying from Allentown to San Juan in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ABE to SJU?

Find hourly flight availability from Allentown to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s typically best to fly out from Allentown to San Juan at noon. Doing so could potentially save you 43% on the flight price compared to flying in the morning, which is usually more expensive.

How much does it cost to fly round-trip from Allentown to San Juan?

Reviews of airlines servicing San Juan

Get insights into the airlines that provide service to San Juan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Juan. Reviews last updated July 29, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Allentown to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,979 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,896 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,979 reviews

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Allentown to San Juan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Allentown to San Juan?

    Most people fly from Allentown-Bethlehem (ABE) if they book a flight from Allentown to San Juan. On average, Allentown-Bethlehem has 0 outbound flights to San Juan per day from 4 airlines. Allentown-Bethlehem is conveniently located just 3.9 mi from Allentown’s city center.

  • What are the cheapest airlines flying from Allentown to San Juan round-trip?

    American Airlines, at $245, was found to be the cheapest airline from Allentown to San Juan.Alternate airlines to your destination round-trip include Delta and United Airlines. These flights start at 44% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Allentown to San Juan one-way?

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $138. United Airlines flights start at $256 while deals on American Airlines start at $271 one-way.

  • Can I find deals for flights from Allentown to San Juan that include hotel bookings?

    Yes. In addition to deals on Allentown to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Allentown to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Allentown to San Juan.

  • Can I find deals for business class flights from Allentown to San Juan?

    Yes. Cheapflights offers flight deals from Allentown to San Juan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Allentown to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Allentown to San Juan (average of $254). Flying from Allentown to San Juan in June is currently the most expensive (average of $339). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Allentown to San Juan

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Top 4 airlines flying from Allentown to San Juan

Discover the top 4 airlines that operate flights from Allentown to San Juan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$248FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$175Average$462FlexibilityNo cancel feeOn-time69%
DeltaCheapest$217Average$466FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$275Average$529FlexibilityNo cancel feeOn-time71%

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