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Cheap flights from Philadelphia to San Juan Luis Munoz Marin Intl Airport from £97

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SJU
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Philadelphia to San Juan Luis Munoz Marin Intl are usually found in October or May, booked 28 days in advance, depart on a Tuesday or Monday and return on a Friday

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 18 September 2025.

Round-trip from

£194

One-way from

£97

Popular in

December

Cheapest in

October

Average price

£189
United Airlines
  • United Airlines
  • 21/10-28/10
  • 3 total stops
  • 21h 16m total
  • Philadelphia to San Juan
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Southwest
  • Southwest
  • 18/11
  • 1 total stop
  • 6h 20m total
  • Philadelphia to San Juan
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£11 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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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 18 September 2025.

Tue 21/1006:30PHL - SJU
2 stops14h 08mUnited Airlines
Tue 28/1015:52SJU - PHL
1 stop8h 23mUnited Airlines
Deal found 15/9£194
Tue 21/1006:30PHL - SJU
1 stop8h 14mUnited Airlines
Wed 29/1001:05SJU - PHL
2 stops13h 02mUnited Airlines
Deal found 17/9£209
Wed 29/1010:15PHL - SJU
2 stops12h 30mSouthwest
Fri 14/1106:40SJU - PHL
1 stop6h 45mSouthwest
Deal found 15/9£212
Tue 28/1012:00PHL - SJU
1 stop9h 04mJetBlue
Wed 12/1105:05SJU - PHL
1 stop7h 03mJetBlue
Deal found 16/9£215
Wed 29/1010:05PHL - SJU
2 stops11h 17mUnited Airlines
Mon 3/1108:30SJU - PHL
2 stops15h 33mUnited Airlines
Deal found 17/9£215
Tue 2/1216:32PHL - SJU
1 stop6h 22mJetBlue
Wed 17/1216:26SJU - PHL
1 stop7h 47mJetBlue
Deal found 17/9£217
Sat 18/1007:00PHL - SJU
1 stop9h 05mJetBlue
Wed 22/1013:00SJU - PHL
1 stop8h 55mJetBlue
Deal found 15/9£220
Tue 14/1010:32PHL - SJU
2 stops13h 25mUnited Airlines
Thu 16/1001:05SJU - PHL
2 stops8h 41mUnited Airlines
Deal found 17/9£223
Tue 9/1210:15PHL - SJU
1 stop9h 45mUnited Airlines
Fri 12/1202:05SJU - PHL
2 stops13h 02mUnited Airlines
Deal found 16/9£229
Tue 21/1010:15PHL - SJU
2 stops12h 30mSouthwest
Fri 31/1005:40SJU - PHL
2 stops14h 00mSouthwest
Deal found 16/9£231
Mon 3/1110:34PHL - SJU
2 stops13h 02mUnited Airlines
Sat 8/1108:10SJU - PHL
1 stop10h 19mUnited Airlines
Deal found 14/9£233
Thu 30/1012:40PHL - SJU
2 stops11h 10mSouthwest
Wed 12/1106:40SJU - PHL
2 stops11h 35mSouthwest
Deal found 16/9£234

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 18 September 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

Sat 18/10

07:00-16:05

1 stop9h 05m

San Juan Luis Munoz Marin Intl

Wed 22/10

13:00-21:55

1 stop8h 55m

£220

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Wed 22/10

06:30-14:44

1 stop8h 14m

San Juan Luis Munoz Marin Intl

Tue 28/10

01:05-14:07

2 stops13h 02m

£237

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 9/12

10:15-21:00

1 stop9h 45m

San Juan Luis Munoz Marin Intl

Sat 13/12

07:45-21:36

2 stops14h 51m

£243

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Thu 5/3

07:00-17:55

1 stop9h 55m

San Juan Luis Munoz Marin Intl

Fri 13/3

14:35-23:01

1 stop8h 26m

£259

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 8/11

17:05-00:15

1 stop6h 10m

San Juan Luis Munoz Marin Intl

Tue 11/11

05:45-15:05

2 stops10h 20m

£271

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Mon 17/11

17:15-00:35

1 stop6h 20m

San Juan Luis Munoz Marin Intl

Mon 24/11

07:40-18:20

2 stops11h 40m

£278

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sun 1/2

17:00-06:11

2 stops12h 11m

San Juan Luis Munoz Marin Intl

Wed 4/2

02:05-14:10

2 stops13h 05m

£282

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 14/10

10:15-22:45

2 stops12h 30m

San Juan Luis Munoz Marin Intl

Fri 24/10

07:05-17:25

1 stop10h 20m

£297

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Tue 3/3

10:10-22:22

2 stops11h 12m

San Juan Luis Munoz Marin Intl

Fri 6/3

02:05-14:22

2 stops13h 17m

£311

PhiladelphiaSan Juan

PHL - SJU

PHLSJU

Philadelphia

Sat 1/11

17:07-21:00

1 stop27h 53m

San Juan Luis Munoz Marin Intl

Mon 3/11

02:05-14:07

2 stops13h 02m

£323

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 22 results
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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 return 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 return flight from Philadelphia to Luis Munoz Marin Intl. Price data was last updated on 12 September 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, April is the cheapest month in which you can book a flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport (average of £631). Flying from Philadelphia to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £1,027). 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 18 September 2025.

When flying from Philadelphia to San Juan Luis Munoz Marin Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    If you book a flight to San Juan Luis Munoz Marin Intl 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 is 1 flight from Philadelphia to San Juan Luis Munoz Marin Intl per day from 0 different airlines.

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

    Airlines like JetBlue, United Airlines, and Southwest fly from Philadelphia to San Juan Luis Munoz Marin Intl Airport in about 6h 10m. The time it takes to get you to your destination can typically vary by up to 2h 55m. The distance from Philadelphia to San Juan Luis Munoz Marin Intl Airport is about 1579 mi. This flight may include one or multiple stops.

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

    Before booking your flight to San Juan Luis Munoz Marin Intl Airport from Philadelphia, check out the most reliable airlines to get you to your destination on time: Spirit Airlines (64%), British Airways (51%), American Airlines( 50%).

  • 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 holiday 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, April is the cheapest month in which you can book a flight from Philadelphia to San Juan Luis Munoz Marin Intl Airport (average of £631). Flying from Philadelphia to San Juan Luis Munoz Marin Intl Airport in July is currently the most expensive (average of £1,027). 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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