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$123+ 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 11/24. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SJU
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Allentown-Bethlehem to San Juan are usually found in January or November, booked 63 days in advance, depart on a Monday or Saturday and return on a Friday

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 October 30, 2025.

This American Airlines deal was found by Cheapflights users on 10/30. 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.
Sun 12/76:10 amABE - SJU
1 stop14h 55mAmerican Airlines
Wed 12/108:20 amSJU - ABE
1 stop15h 38mAmerican Airlines
Deal found 10/30$370
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/66:10 amABE - SJU
1 stop14h 55mAmerican Airlines
Sat 12/138:18 amSJU - ABE
1 stop15h 48mAmerican Airlines
Deal found 10/28$371
This American Airlines deal was found by Cheapflights users on 10/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:10 amABE - SJU
1 stop8h 41mAmerican Airlines
Tue 12/168:20 amSJU - ABE
1 stop15h 38mAmerican Airlines
Deal found 10/28$393
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Thu 12/47:30 amABE - SJU
3 stops26h 03mMultiple Airlines
Sat 12/64:10 amSJU - ABE
2 stops9h 09mMultiple Airlines
Deal found 10/29$395
This Mytrip deal was found by Cheapflights users on 10/30. 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 12/77:30 amABE - SJU
3 stops28h 02mMultiple Airlines
Wed 12/105:00 pmSJU - ABE
2 stops20h 19mMultiple Airlines
Deal found 10/30$412
This Trip.com deal was found by Cheapflights users on 10/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:08 pmABE - SJU
1 stop19h 51mMultiple Airlines
Fri 12/123:55 amSJU - ABE
1 stop15h 23mMultiple Airlines
Deal found 10/28$442

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 October 30, 2025.

Round-trip from

$235
(United Airlines)

One-way from

$123
(Kiwi.com)

Popular in

September

Cheapest in

January

Average price

$420
From Allentown-Bethlehem to San Juan
Search Deals
One-way flight from Allentown-Bethlehem to San Juan
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Highest demand for flights based on searches. 24% potential increase in price ($164 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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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 October 30, 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 1/27

11:30 am-9:00 pm

1 stop8h 30m

San Juan Luis Munoz Marin Intl

Tue 2/3

7:45 am-9:15 pm

2 stops14h 30m

$325

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Wed 1/14

11:30 am-9:00 pm

1 stop8h 30m

San Juan Luis Munoz Marin Intl

Tue 1/20

2:05 am-4:22 pm

2 stops15h 17m

$400

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sat 1/17

11:30 am-12:36 am

2 stops12h 06m

San Juan Luis Munoz Marin Intl

Fri 1/23

2:05 am-9:15 pm

3 stops20h 10m

$438

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 2/1

11:30 am-9:00 pm

1 stop8h 30m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-9:15 pm

3 stops20h 10m

$443

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Fri 1/23

11:30 am-12:36 am

2 stops12h 06m

San Juan Luis Munoz Marin Intl

Fri 1/30

2:05 am-9:15 pm

3 stops20h 10m

$468

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 2/15

5:23 pm-6:11 am

2 stops11h 48m

San Juan Luis Munoz Marin Intl

Tue 2/17

2:05 am-4:48 pm

2 stops15h 43m

$478

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 11/18

6:32 am-9:26 pm

2 stops13h 54m

San Juan Luis Munoz Marin Intl

Thu 11/20

8:10 am-4:47 pm

1 stop9h 37m

$480

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 3/3

6:30 am-5:12 pm

1 stop9h 42m

San Juan Luis Munoz Marin Intl

Fri 3/6

6:15 am-5:13 pm

1 stop11h 58m

$542

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 12/7

6:30 am-3:40 pm

1 stop8h 10m

San Juan Luis Munoz Marin Intl

Tue 12/9

2:05 am-4:47 pm

2 stops15h 42m

$580

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 11/23

10:00 am-11:38 am

1 stop24h 38m

$133

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 15 results
1
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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 October 24, 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, May is the cheapest month in which you can book a flight from Allentown to San Juan (average of $74). Flying from Allentown to San Juan in August is currently the most expensive (average of $138). 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 October 30, 2025.

It’s typically best to fly out from Allentown to San Juan in the afternoon. Doing so could potentially save you 33% 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 October 30, 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
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,998 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,035 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Frontier
5.8
Fair
3,122 reviews
Delta
7.9
Good
7,998 reviews

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

Food

7.3

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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.

  • How long is the flight from Allentown to San Juan?

    A quick flight from Allentown to San Juan can take about 8h 30m. United Airlines provides one of the quickest options available for as low as $325. The distance between Allentown and San Juan is about 1633 mi.

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

    Frontier, at $78, was found to be the cheapest airline from Allentown to San Juan.Alternate airlines to your destination round-trip include United Airlines and American Airlines. These flights start at 84% lower than the current average price 3 months from now.

  • 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, May is the cheapest month in which you can book a flight from Allentown to San Juan (average of $74). Flying from Allentown to San Juan in August is currently the most expensive (average of $138). 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$248FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$202Average$462FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$249Average$512FlexibilityNo cancel feeOn-time71%
DeltaCheapest$275Average$573FlexibilityNo cancel feeOn-timeN/A

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