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$90+ Cheap flights from Philadelphia (PHL) 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Philadelphia to San Juan are usually found in October or September, booked 28 days in advance, depart on a Monday or Wednesday and return on a Thursday

Cheap flight deals from Philadelphia to San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) 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 September 11, 2025.

Round-trip from

$155
(CheapOair)

One-way from

$90
(Cheapflightsfares)

Popular in

December

Cheapest in

October

Average price

$244
From Philadelphia to San Juan
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One-way flight from Philadelphia to San Juan
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Highest demand for flights based on searches. 7% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Philadelphia to San Juan

Cheapest flights from Philadelphia to San Juan
Explore the most affordable flight options available from Philadelphia to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This CheapOair deal was found by Cheapflights users on 9/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/36:15 amPHL - SJU
Nonstop3h 46mFrontier
Thu 11/62:11 amSJU - PHL
Nonstop3h 58mFrontier
Deal found 9/11$155
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
Sun 11/25:15 amPHL - SJU
Nonstop3h 46mFrontier
Thu 11/62:11 amSJU - PHL
Nonstop3h 58mFrontier
Deal found 9/9$156
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:43 pmPHL - SJU
Nonstop3h 46mFrontier
Mon 10/201:59 amSJU - PHL
Nonstop3h 58mFrontier
Deal found 9/11$158
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:10 amPHL - SJU
Nonstop3h 51mFrontier
Sat 9/2012:28 amSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/9$159
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:32 pmPHL - SJU
Nonstop3h 51mFrontier
Thu 10/212:06 pmSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/11$160
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/207:32 pmPHL - SJU
Nonstop3h 51mFrontier
Fri 10/312:28 amSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/11$161
This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/215:00 amPHL - SJU
1 stop6h 04mSpirit Airlines
Thu 9/2512:05 pmSJU - PHL
Nonstop4h 10mSpirit Airlines
Deal found 9/9$162
This Cheapflightsfares deal was found by Cheapflights users on 9/8. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:10 amPHL - SJU
Nonstop3h 51mFrontier
Sat 9/2712:28 amSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/8$166
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:10 amPHL - SJU
Nonstop3h 51mFrontier
Fri 10/241:59 amSJU - PHL
Nonstop3h 58mFrontier
Deal found 9/11$167
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/148:43 pmPHL - SJU
Nonstop3h 46mFrontier
Fri 10/171:59 amSJU - PHL
Nonstop3h 58mFrontier
Deal found 9/11$168
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:32 pmPHL - SJU
Nonstop3h 51mFrontier
Fri 9/1912:28 amSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/10$169
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:10 amPHL - SJU
Nonstop3h 51mFrontier
Sat 9/2712:28 amSJU - PHL
Nonstop3h 59mFrontier
Deal found 9/10$170

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia 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 September 11, 2025.
Use the filters below to find and compare flights from Philadelphia to San Juan that are best for you.

Fly from

Philadelphia

Fly to

San Juan

Route

Depart

Return

Price

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 9/25

7:10 am-11:01 am

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Sat 9/27

12:28 am-4:27 am

Nonstop3h 59m

$170

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 9/18

7:10 am-11:01 am

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Tue 9/23

1:06 pm-5:05 pm

Nonstop3h 59m

$240

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 9/25

4:03 pm-9:52 am

1 stop17h 49m

San Juan Luis Munoz Marin Intl

Sat 9/27

12:28 am-4:27 am

Nonstop3h 59m

$244

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 10/21

6:30 am-2:44 pm

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Wed 10/22

1:05 am-9:47 am

2 stops8h 42m

$259

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 10/21

10:35 am-9:59 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

Thu 10/23

7:15 am-6:20 pm

1 stop11h 05m

$259

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 11/1

8:43 pm-12:29 am

Nonstop3h 46m

San Juan Luis Munoz Marin Intl

Sun 11/9

2:11 am-5:09 am

Nonstop3h 58m

$267

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 9/18

7:32 pm-11:23 pm

Nonstop3h 51m

San Juan Luis Munoz Marin Intl

Sun 9/21

3:39 am-11:38 am

1 stop7h 59m

$268

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 10/30

12:40 pm-11:50 pm

2 stops11h 10m

San Juan Luis Munoz Marin Intl

Wed 11/5

8:55 am-2:25 pm

1 stop6h 30m

$284

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Wed 12/10

6:15 am-11:05 am

Nonstop3h 50m

$114

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 10/9

7:15 am-11:13 am

Nonstop3h 58m

$114

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 19 results
1
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Best time to book a flight from Philadelphia to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan from Philadelphia 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 Philadelphia to San Juan

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

Use this chart to determine the optimal time to book a round-trip flight from Philadelphia to San Juan. Price data was last updated on August 29, 2025.

Booking 28 days in advance of your planned departure date is, on average, the best time to get cheap flights from Philadelphia to San Juan. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from Philadelphia to San Juan (average of $254). Flying from Philadelphia 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 PHL to SJU?

Find hourly flight availability from Philadelphia 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 September 11, 2025.

It’s typically best to fly out from Philadelphia to San Juan in the evening. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Philadelphia to San Juan?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to San Juan. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to San Juan flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Philadelphia to San Juan

Explore weekly flight availability from Philadelphia to San Juan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 11, 2025.

The most flights from PHL to PR1 are scheduled on a Thursday (3 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

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 September 11, 2025.
Read through reviews of airlines operating flights from Philadelphia to San Juan, such as Delta, American Airlines, and JetBlue. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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!
JetBlue
7.2
Good
2,913 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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!
Spirit Airlines
6.3
Okay
8,023 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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!
Frontier
5.8
Fair
3,177 reviews
Delta
8.0
Very good
7,960 reviews

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Crew

8.5

Comfort

7.9

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 Philadelphia 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 Philadelphia to San Juan?

    If you book a flight to San Juan from Philadelphia, you will be flying from Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia. There are 2 flights from Philadelphia to San Juan per day from 8 different airlines.

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

    Frontier and United Airlines can get you from Philadelphia to San Juan in just under 3h 51m. Your travel time can differ by up to 4h 23m. Airlines will cover a distance of 1579 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Cheapflights users have booked flights from Philadelphia to San Juan round-trip from $99. Other airlines that can offer you cheap pricing are Spirit Airlines, from $129, and Frontier, from $140. You may be able to fly from Philadelphia to San Juan for 63% less than the average price by searching for these airlines.

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

    One-way options have recently been found by users for as low as $114 on Spirit Airlines. Other airlines that offer cheap prices include Southwest from $130 and Frontier from $132 one-way.

  • What are the most reliable airlines from Philadelphia to San Juan?

    Consider Spirit Airlines (66%), Frontier (48%) or Qatar Airways (46%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to San Juan.

  • What are the cheapest flights from Philadelphia to San Juan?

    On average you can expect to pay $604 for a flight from Philadelphia to San Juan. The cheapest flight overall is $99 while the most popular route, (Philadelphia - San Juan Luis Munoz Marin Intl) is currently priced at $192.

  • Where are the most common layover locations when flying from Philadelphia to San Juan?

    Philadelphia to San Juan flights have a layover in Orlando most of the time.

  • What are some popular things to do or see while on a layover in Orlando?

    Walt Disney World Resort, Universal Orlando Resort, and International Drive are currently the most popular points of interest in Orlando at the moment. Walt Disney World Resort, Universal Orlando Resort, and International Drive can be accessed by traveling approximately 16.2 mi, 10.2 mi, and 9.9 mi, respectively from Orlando. Travelers can rent a car at Orlando for an average daily rate of $28 to make sightseeing during their layover a little easier.

  • Where are the least popular layover locations for Philadelphia to San Juan flights?

    Of the flights from Philadelphia to San Juan that have layovers, the fewest flights stop in Miami.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Philadelphia 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 Philadelphia to San Juan?

    Currently, September is the cheapest month in which you can book a flight from Philadelphia to San Juan (average of $254). Flying from Philadelphia 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 Philadelphia to San Juan

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Luis Munoz Marin Intl flights
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John F Kennedy Intl to Mayagüez flights
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Dulles Intl to Aguadilla flights
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Erie to Luis Munoz Marin Intl flights
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Top 8 airlines flying from Philadelphia to San Juan

Discover the top 8 airlines that operate flights from Philadelphia 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Avelo AirlinesCheapest$99Average$159FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$129Average$258FlexibilityNo cancel feeOn-time65%
FrontierCheapest$138Average$315FlexibilityNo cancel feeOn-time62%
JetBlueCheapest$209Average$412FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$213Average$460FlexibilityNo cancel feeOn-time63%
DeltaCheapest$217Average$342FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$243Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$420Average$512FlexibilityNo cancel feeOn-time69%

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