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San Juan

$181+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SJU
Apr 14 — Apr 211
Tue 4/14
Tue 4/21
1 adult, Economy
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Cheap 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 March 15, 2026.

This Delta deal was found by Cheapflights users on 3/12. 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.
Wed 9/166:30 am
ABE
-
SJU
1 stop10h 01m
Delta
Sat 9/192:26 pm
SJU
-
ABE
1 stop8h 30m
Delta
Deal found 3/12$316
This American Airlines deal was found by Cheapflights users on 3/11. 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 4/266:04 am
ABE
-
SJU
1 stop15h 11m
American Airlines
Wed 4/297:25 am
SJU
-
ABE
1 stop16h 57m
American Airlines
Deal found 3/11$322
This American Airlines deal was found by Cheapflights users on 3/14. 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 4/186:04 am
ABE
-
SJU
1 stop14h 47m
American Airlines
Wed 4/2211:38 am
SJU
-
ABE
1 stop12h 44m
American Airlines
Deal found 3/14$355
This American Airlines deal was found by Cheapflights users on 3/11. 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 4/216:00 am
ABE
-
SJU
1 stop14h 51m
American Airlines
Thu 4/307:25 am
SJU
-
ABE
1 stop16h 57m
American Airlines
Deal found 3/11$362
This Kiwi.com deal was found by Cheapflights users on 3/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1212:17 pm
ABE
-
SJU
1 stop20h 32m
Multiple Airlines
Thu 5/148:27 pm
SJU
-
ABE
1 stop24h 39m
Multiple Airlines
Deal found 3/13$365
This American Airlines deal was found by Cheapflights users on 3/11. 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 4/96:04 am
ABE
-
SJU
1 stop14h 47m
American Airlines
Thu 4/167:25 am
SJU
-
ABE
1 stop16h 57m
American Airlines
Deal found 3/11$377
This American Airlines deal was found by Cheapflights users on 3/12. 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 8/111:56 pm
ABE
-
SJU
1 stop9h 00m
American Airlines
Tue 8/188:00 am
SJU
-
ABE
1 stop11h 05m
American Airlines
Deal found 3/12$392
This American Airlines deal was found by Cheapflights users on 3/14. 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 9/156:33 am
ABE
-
SJU
1 stop8h 12m
American Airlines
Tue 9/223:55 pm
SJU
-
ABE
1 stop6h 19m
American Airlines
Deal found 3/14$395
This American Airlines deal was found by Cheapflights users on 3/10. 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 4/256:04 am
ABE
-
SJU
1 stop14h 47m
American Airlines
Wed 4/297:25 am
SJU
-
ABE
1 stop16h 57m
American Airlines
Deal found 3/10$402
This Kiwi.com deal was found by Cheapflights users on 3/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/81:41 pm
ABE
-
SJU
1 stop29h 41m
Multiple Airlines
Sun 5/179:54 am
SJU
-
ABE
2 stops34h 16m
Multiple Airlines
Deal found 3/12$409
This American Airlines deal was found by Cheapflights users on 3/10. 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.
Wed 8/261:56 pm
ABE
-
SJU
1 stop9h 00m
American Airlines
Mon 8/318:00 am
SJU
-
ABE
1 stop14h 35m
American Airlines
Deal found 3/10$414
This Delta deal was found by Cheapflights users on 3/11. 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.
Wed 10/146:30 am
ABE
-
SJU
1 stop10h 03m
Delta
Mon 10/1912:46 pm
SJU
-
ABE
1 stop10h 00m
Delta
Deal found 3/11$417

Find 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 March 15, 2026.

Round-trip from

$322
(American Airlines)

One-way from

$181
(American Airlines)

Popular in

September

Cheapest in

November

Average price

$546
From Allentown-Bethlehem to San Juan
Search Deals
One-way flight from Allentown-Bethlehem to San Juan
Search Deals
Highest demand for flights based on searches. 32% potential increase in price ($256 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease ($86 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 15, 2026.
Use the filters below to find and compare flights from Allentown to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 6/2

2:23 pm-5:29 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

Sat 6/6

1:00 am-1:48 pm

2 stops12h 48m

$641
Quickest round-trip

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sat 8/22

6:30 am-4:35 pm

1 stop10h 05m

San Juan Luis Munoz Marin Intl

Sat 8/29

2:40 pm-10:56 pm

1 stop8h 16m

$667

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Tue 9/1

6:15 am-8:38 pm

2 stops14h 23m

San Juan Luis Munoz Marin Intl

Wed 9/2

3:56 pm-10:06 am

1 stop18h 10m

$668

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Wed 7/1

2:23 pm-5:29 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

Fri 7/31

2:05 am-5:06 pm

2 stops15h 01m

$692

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Wed 6/3

6:15 am-8:34 pm

1 stop14h 19m

San Juan Luis Munoz Marin Intl

Fri 6/5

1:00 am-1:48 pm

2 stops12h 48m

$722

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Thu 8/6

2:23 pm-5:29 am

2 stops15h 06m

San Juan Luis Munoz Marin Intl

Thu 8/13

2:20 pm-10:06 am

2 stops19h 46m

$833

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Fri 5/1

6:15 am-9:24 pm

2 stops15h 09m

San Juan Luis Munoz Marin Intl

Fri 5/8

1:00 am-1:38 pm

2 stops12h 38m

$850

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Thu 5/7

6:15 am-9:24 pm

2 stops15h 09m

San Juan Luis Munoz Marin Intl

Thu 5/14

1:00 am-1:38 pm

2 stops12h 38m

$864
Cheapest one-way

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 4/19

12:52 pm-11:12 pm

1 stop10h 20m

$186

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

Sun 4/19

6:15 am-8:38 pm

2 stops14h 23m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 March 13, 2026.

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 2 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, January is the cheapest month in which you can book a flight from Allentown to San Juan (average of $71). 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.

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 March 15, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican 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
8,294 reviews

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,294 reviews
Delta
7.9
Good
8,294 reviews

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,429 reviews
Delta
7.9
Good
8,294 reviews

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,466 reviews
Delta
7.9
Good
8,294 reviews

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Frontier
5.7
Fair
3,030 reviews
Delta
7.9
Good
8,294 reviews

Entertainment

7.8

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

Boarding

8.1

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 10h 05m. United Airlines provides one of the quickest options available for as low as $667. The distance between Allentown and San Juan is about 1633 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Frontier, at $83, 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 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, January is the cheapest month in which you can book a flight from Allentown to San Juan (average of $71). 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

Browse thousands of different options on Cheapflights for your next trip

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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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$83Average$210FlexibilityNo cancel feeOn-time62%
DeltaCheapest$182Average$477FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$242Average$462FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$249Average$483FlexibilityNo cancel feeOn-time71%

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