Luis Munoz Marin Intl

$90+ Cheap flights from Philadelphia (PHL) to Luis Munoz Marin Intl (SJU)

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
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Cheapflights Tip: The best prices from Philadelphia to San Juan Luis Munoz Marin Intl 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 Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Philadelphia (PHL) to Luis Munoz Marin Intl (SJU). 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

Good round-trip deal

$240 or less

Good one-way deal

$138 or less
From Philadelphia to San Juan Luis Munoz Marin Intl
One-way flight from Philadelphia to San Juan Luis Munoz Marin Intl
Highest demand for flights based on searches. 7% potential increase in price ($21 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from Philadelphia to San Juan Luis Munoz Marin Intl.
Price to beat on a one-way flight from Philadelphia to San Juan Luis Munoz Marin Intl.

Find flight deals from Philadelphia to Luis Munoz Marin Intl

Cheapest flights from Philadelphia to Luis Munoz Marin Intl
Explore the most affordable flight options available from Philadelphia to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport that are best for you.

Fly from

Philadelphia

Fly to

Luis Munoz Marin Intl

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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The best insider tips for Philadelphia to San Juan Luis Munoz Marin Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Philadelphia to San Juan Luis Munoz Marin Intl Airport trip
Airlines
Frontier

Frontier's UpFront Plus seats guarantee an empty middle seat for extra comfort.


Frontier's Economy Bundle includes a carry-on bag, seat selection, and no cancellation fees.

Read more about Frontierby Marisa Garcia
Spirit Airlines

Spirit's Big Front Seats offer 11 inches more legroom, ideal for added comfort.


Spirit's Economy Plus Bundle includes both carry-on and check-in bags, plus early boarding.

Airports
PHL

For a quick check-in, verify your airline’s terminal before arriving at PHL. Terminals are spread out, and only some are linked by indoor walkways.

Read more about PHLby Mark Chesnut
SJU

At SJU, Uber is a convenient option to reach the city. Hail one from marked areas outside arrivals for a cashless ride.

Read more about SJUby Brandon Schultz
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Daniel Scheffler

Daniel Scheffler

Expert on Spirit Airlines

Daniel Scheffler

Daniel Scheffler

Daniel Scheffler is a travel writer, podcaster, and producer. Born in Africa, bred in Europe and now living in America he has traveled to 140 countries (and all 50 U.S. states). Plus he has stayed at over 2500 hotels across the globe. His original shows Everywhere and Without Maps (available on Spotify) showcase his beliefs, travel is about humanity and sharing that beauty. And thus it reminds you that you shouldn’t believe everything you think.

Read more
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Brandon Schultz

Brandon Schultz

Expert on SJU

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Best time to book a flight from Philadelphia to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

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

The best time to book flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport is 28 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

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

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Luis Munoz Marin Intl. Price data was last updated on September 7, 2025.

Travelers seeking maximum savings on their Philadelphia to San Juan Luis Munoz Marin Intl Airport 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.

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated September 11, 2025.
Read reviews from past customers who have flown Delta, American Airlines, and JetBlue from Philadelphia to San Juan Luis Munoz Marin Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
8.0
Very good
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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!
8.0
Very good

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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 Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly out of when you book flights from Philadelphia to San Juan Luis Munoz Marin Intl. 8 airlines have flights from Philadelphia to San Juan Luis Munoz Marin Intl on a regular basis. Booking flights from Philadelphia to San Juan Luis Munoz Marin Intl should not be difficult; the airport handles an average of 2 outbound flights to San Juan Luis Munoz Marin Intl per day.

  • How long is the flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

    For as low as $170, Frontier can have you in San Juan Luis Munoz Marin Intl Airport from Philadelphia in 3h 51m. The distance between Philadelphia and San Juan Luis Munoz Marin Intl Airport is about 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 Luis Munoz Marin Intl Airport round-trip?

    Flying on Avelo Airlines is currently your cheapest option to San Juan Luis Munoz Marin Intl Airport, with prices starting at $99. Additional round-trip tickets that might be worth considering are offered by Spirit Airlines and Frontier, with the lowest prices starting at $129 and $147, respectively. Users have found that Avelo Airlines is 63% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Philadelphia to San Juan Luis Munoz Marin Intl Airport one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $114. Southwest flights start at $130 while deals on Frontier start at $132 one-way.

  • What are the most reliable airlines from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Philadelphia to San Juan Luis Munoz Marin Intl Airport on time: Spirit Airlines (66%), Frontier (48%), Qatar Airways (46%).

  • What are the cheapest flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

    While on average a flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport is generally $604, our data shows the cheapest flight currently is $99. When looking at the most popular route, (Philadelphia - San Juan Luis Munoz Marin Intl), you can expect to pay $192 for that flight.

  • Where are the most common layover locations when flying from Philadelphia to San Juan Luis Munoz Marin Intl Airport?

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

    If you're on a layover in Orlando and looking for things to do, consider visiting Walt Disney World Resort, Universal Orlando Resort, or International Drive. Travelers on a layover in Orlando can visit Walt Disney World Resort, Universal Orlando Resort, and International Drive, by traveling 16.2 mi, 10.2 mi, and 9.9 mi, respectively after landing at Orlando. Travelers can book a car rental at Orlando for about $28 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Philadelphia to San Juan Luis Munoz Marin Intl Airport flights?

  • Can I find deals for flights from Philadelphia to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Philadelphia to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Philadelphia to Luis Munoz Marin Intl?

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

  • Can I find deals for business class flights from Philadelphia to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Philadelphia to Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport?

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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Luquillo
Humacao

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Top 8 airlines flying from Philadelphia to Luis Munoz Marin Intl

Discover the top 8 airlines that operate flights from Philadelphia to Luis Munoz Marin Intl. 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$147Average$275FlexibilityNo 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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