Cheap Flights from Philadelphia to San Juan

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Flight deals from Philadelphia to San Juan

Looking for a cheap last-minute deal or the best return flight from Philadelphia to San Juan? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Philadelphia to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to San Juan flights are currently cheapest in August.

Direct flights from Philadelphia to San Juan

Alternative Philadelphia to San Juan routes

Looking for the cheapest, fastest or easiest route from Philadelphia to San Juan? You could fly into the following airports instead.

Philadelphia to San Juan: Flight information

The things to know before you go.
Cheapest flight foundR 1,660
Cheapest month to flyAugust
Average flight time3 hrs, 55 mins
Most popular airlineAmerican Airlines
Average flights per week41

Finding cheap flights from Philadelphia to San Juan: Frequently asked questions

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a return flight from Philadelphia to San Juan is R 3,315. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
3 hours and 55 minutes is the average flight time from Philadelphia to San Juan.
American Airlines, Qatar Airways and Frontier Airlines fly direct from Philadelphia to San Juan.
As of July 2025, there are 41 flights per week flying from Philadelphia to San Juan.
The cheapest month to fly from Philadelphia to San Juan is usually August.
If you're flying from Philadelphia, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the centre of San Juan. We've found flights into this airport from R 3,315.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to San Juan on Tuesday, 5 August 2025.
Yes – the average flight time is 3 hours and 55 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
In July, the average temperature is usually around 27°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
The cheapest airline that flies to San Juan is Spirit Airlines. And the cheapest airline that flies to San Juan Luis Munoz Marin Airport is Frontier Airlines.

Travelling from Philadelphia to San Juan: what you need to know

  • Philadelphia's main base, Philadelphia International Airport (PHL), is where many unforgettable trips begin. Explore your departure choices from here for your flight from Philadelphia to San Juan.

  • Hop off the plane at Luis Munoz Marin International Airport (SJU), the primary gateway of San Juan.

  • The average duration of a direct Philadelphia to San Juan flight is 3 hours 55 minutes.

  • Philadelphia and San Juan are both in the UTC-4 timezone. That means you won't have to change your watch on arrival.

  • With 20 weekly flights between the two airports, Philadelphia International Airport (PHL) to Luis Munoz Marin International Airport (SJU) is the most popular route. Board the first flight from Philadelphia to San Juan with Frontier Airlines at 05:05. If you'd like to get more out of your day before flying, the last flight from PHL to SJU is with Frontier Airlines at 23:59.

  • For a stress-free start to your trip, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your Philadelphia to San Juan flight.

  • Getting on a plane during a peak month like August? High seasons (like spring break, Christmas and Thanksgiving) can easily add an hour at check-in and security. Be extra safe and arrive up to four hours before an international flight and two hours before a domestic departure.

How to find the cheapest flights from Philadelphia to San Juan

  • R 1,660 is the best price for a one-way ticket from Philadelphia to San Juan. Return flights start at R 3,315. These fares can change based on demand and availability.

  • Lock in cheap Philadelphia to San Juan flights by booking two months ahead. According to our research, that's the ideal time frame for landing a bargain.

  • The best month for finding cheap plane tickets from Philadelphia to San Juan is May. Use the 'Whole month' tool to compare prices, then choose the dates that offer the lowest fares.

  • Locking in a cheap flight from Philadelphia to San Juan is a piece of cake with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you when a better deal is available.

  • Choose your preferred arrival and departure times, airlines and number of stops with the filters. Alternatively, sort your Philadelphia to San Juan flight results by 'Fastest,' 'Best' or 'Cheapest.'

Flying from Philadelphia

Philadelphia International Airport (PHL)

  • If you're after a direct flight from Philadelphia to San Juan, you can depart from Philadelphia International Airport (PHL). Get from PHL to Luis Munoz Marin International Airport (SJU) without any stops.

  • You can choose from various airlines offering direct Philadelphia to San Juan plane tickets with departures from PHL, including:

  • Think about adding a stopover to potentially save money on your Philadelphia to San Juan flight. Just deselect 'Direct flights only' when browsing departures from Philadelphia International Airport. Break up the journey at one of these airports:

    • Cyril E. King Airport (STT)

    • Newark Liberty International Airport (EWR)

    • Raleigh-Durham International Airport (RDU)

  • Located around 11 kilometres from the centre of Philadelphia, PHL can be reached in about 15 minutes by car, depending on traffic. The journey on public transport is roughly 45 minutes.

  • After a leisurely start to your travels? Stay near Philadelphia International Airport. Whether you have an early flight from Philadelphia to San Juan or want to avoid feeling rushed, these hotels are the answer:

  • When it comes to the on-time performance of Philadelphia International Airport, 78.93% of flights arrive within the expected time frame.

  • PHL's address is 8500 Essington Ave.

Arriving in San Juan

Luis Munoz Marin International Airport (SJU)

  • The distance from Luis Munoz Marin International Airport (SJU) to central San Juan is roughly 6 kilometres. It takes about 10 minutes to get to the centre driving.

  • It usually takes 55 minutes to get there on public transport.

  • If you're coming in on a late flight from Philadelphia to San Juan, nothing beats the convenience of staying close to the terminal. Grab your luggage from the carousel and then be showered and sleeping soon after at one of these hotels near SJU:

  • Pick up a Luis Munoz Marin International Airport rental car and discover San Juan and beyond with your own wheels. Sixt, Ace Rent a Car and U-Save are top outlets you can book with here.

  • Lock in the best rate by reserving your ride from Luis Munoz Marin International Airport around two weeks before your trip.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Central San Juan is around 6 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). After your flight from Philadelphia to San Juan has hit the runway and you've navigated your way to arrivals, expect a drive of about 15 minutes.

  • If you choose to travel on public transport, the journey will take you 1 hour or so.

Best time to go to San Juan

  • May is the quietest month for flights from Philadelphia to San Juan, while July is the most popular. Find the ideal time to go to San Juan based on whether you want a laid-back vibe or a more bustling atmosphere.

  • Lock in a Philadelphia to San Juan ticket departing in September if you're eager to experience the city during its warmest month. Expect temperatures in San Juan to range from 23ºC (73ºF) to 33ºC (91ºF).

  • If you want to travel in cooler conditions, look for a cheap flight from Philadelphia to San Juan in February when temperatures average between 20ºC (68ºF) and 28ºC (82ºF).

More about San Juan

  • When it comes to looking for somewhere to rest your head, you'll find the best stays in San Juan right here. Explore these options once you've locked in your flight from Philadelphia to San Juan:

  • Every great journey has to include a little sightseeing. Castillo San Felipe del Morro, La Garita del morro de san juan bahia and Fortaleza Street are must-do's during your San Juan adventure.

Explore more of Puerto Rico

  • Bayamon is just one of the many places in Puerto Rico waiting to be explored after you've seen San Juan. Around 10 kilometres to the west, check out popular attractions including Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • If you want to check out another major destination in Puerto Rico, head for Carolina, roughly 11 kilometres east of San Juan. Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track are highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.