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$234+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
ABE — SJU
feb. 28 — mar. 71
sáb. 2/28
sáb. 3/7
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 enero 29, 2026.

This Delta deal was found by Cheapflights users on 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/176:30 am
ABE
-
SJU
1 stop9h 55m
Delta
jue. 11/261:55 pm
SJU
-
ABE
1 stop9h 51m
Delta
Deal found 1/27$299
This Delta deal was found by Cheapflights users on 1/28. 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.
mar. 2/2412:47 pm
ABE
-
SJU
1 stop7h 25m
Delta
vie. 2/276:15 am
SJU
-
ABE
1 stop6h 50m
Delta
Deal found 1/28$319
This American Airlines deal was found by Cheapflights users on 1/28. 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.
sáb. 10/315:53 pm
ABE
-
SJU
1 stop5h 57m
American Airlines
sáb. 11/74:44 pm
SJU
-
ABE
1 stop7h 09m
American Airlines
Deal found 1/28$346
This Delta deal was found by Cheapflights users on 1/26. 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.
mié. 2/2512:47 pm
ABE
-
SJU
1 stop10h 11m
Delta
mié. 3/46:15 am
SJU
-
ABE
1 stop11h 57m
Delta
Deal found 1/26$355
This American Airlines deal was found by Cheapflights users on 1/27. 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.
dom. 2/87:30 am
ABE
-
SJU
1 stop12h 20m
American Airlines
mar. 2/101:58 pm
SJU
-
ABE
1 stop9h 28m
American Airlines
Deal found 1/27$360
This Delta deal was found by Cheapflights users on 1/28. 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.
vie. 2/2012:47 pm
ABE
-
SJU
1 stop7h 25m
Delta
vie. 2/276:15 am
SJU
-
ABE
1 stop6h 50m
Delta
Deal found 1/28$362
This American Airlines deal was found by Cheapflights users on 1/28. 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.
dom. 2/226:04 am
ABE
-
SJU
1 stop14h 45m
American Airlines
vie. 2/278:40 am
SJU
-
ABE
1 stop16h 49m
American Airlines
Deal found 1/28$367
This Kiwi.com deal was found by Cheapflights users on 1/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/82:12 pm
ABE
-
SJU
1 stop12h 01m
Multiple Airlines
jue. 3/127:00 am
SJU
-
ABE
1 stop15h 39m
Multiple Airlines
Deal found 1/27$368
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/262:10 pm
ABE
-
SJU
1 stop7h 59m
Multiple Airlines
jue. 3/56:00 am
SJU
-
ABE
1 stop15h 13m
Multiple Airlines
Deal found 1/29$370
This Delta deal was found by Cheapflights users on 1/28. 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.
lun. 2/212:48 pm
ABE
-
SJU
1 stop7h 10m
Delta
jue. 2/126:15 am
SJU
-
ABE
1 stop11h 57m
Delta
Deal found 1/28$383
This Delta deal was found by Cheapflights users on 1/28. 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.
sáb. 2/2112:47 pm
ABE
-
SJU
1 stop10h 11m
Delta
vie. 2/276:15 am
SJU
-
ABE
1 stop6h 50m
Delta
Deal found 1/28$403

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 enero 29, 2026.

Round-trip from

$319
(Delta)

One-way from

$234
(United Airlines)

Popular in

September

Cheapest in

November

Average price

$327
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. 34% potential increase in price ($278 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 19% potential price decrease ($87 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 enero 29, 2026.
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

mar. 2/24

12:47 pm-9:12 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

vie. 2/27

6:15 am-12:05 pm

1 stop6h 50m

$319

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

mié. 2/25

12:47 pm-11:58 pm

1 stop10h 11m

San Juan Luis Munoz Marin Intl

mié. 3/4

6:15 am-5:12 pm

1 stop11h 57m

$355

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

vie. 2/20

12:47 pm-9:12 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

vie. 2/27

6:15 am-12:05 pm

1 stop6h 50m

$362

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

sáb. 2/21

12:47 pm-11:58 pm

1 stop10h 11m

San Juan Luis Munoz Marin Intl

vie. 2/27

6:15 am-12:05 pm

1 stop6h 50m

$403

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

vie. 2/27

12:47 pm-9:12 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

sáb. 3/7

7:30 am-5:12 pm

1 stop10h 42m

$406

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

dom. 2/8

11:30 am-9:00 pm

1 stop8h 30m

San Juan Luis Munoz Marin Intl

mar. 2/10

2:05 am-4:22 pm

2 stops15h 17m

$440

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

lun. 2/23

1:49 pm-3:31 pm

1 stop24h 42m

San Juan Luis Munoz Marin Intl

sáb. 2/28

8:05 pm-8:10 pm

1 stop25h 05m

$444

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

mié. 2/25

12:47 pm-9:12 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

vie. 2/27

6:15 am-12:05 pm

1 stop6h 50m

$464

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

lun. 2/23

12:47 pm-9:12 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

vie. 2/27

6:15 am-12:05 pm

1 stop6h 50m

$464

AllentownSan Juan

ABE - SJU

ABESJU

Allentown-Bethlehem

vie. 3/6

3:08 pm-2:25 pm

1 stop22h 17m

San Juan Luis Munoz Marin Intl

mar. 3/10

7:05 pm-2:48 pm

1 stop19h 43m

$489

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

Showing 1-10 of 20 results
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 January 23, 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 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, 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.

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 enero 29, 2026.
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
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
8,127 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
9,215 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
7.2
Good
11,206 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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
3,056 reviews
Delta
7.9
Good
8,127 reviews

Comfort

7.9

Entertainment

7.8

Food

7.2

Boarding

8.1

Crew

8.5

Overall

7.9

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 7h 25m. Delta provides one of the quickest options available for as low as $319. 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 Delta. These flights start at 85% 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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Alternative routes for Allentown to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
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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 enero 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$239FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$161Average$462FlexibilityNo cancel feeOn-time69%
DeltaCheapest$182Average$511FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$249Average$492FlexibilityNo cancel feeOn-time71%

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