Cheap Flights from Philadelphia International to San Juan

Compare Philadelphia International to San Juan flight deals

Find the cheapest month or even day of the year to fly to San Juan

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Flight deals from Philadelphia International to San Juan

Looking for a cheap last-minute deal or the best return flight from Philadelphia International Airport to San Juan? If you want to travel next month, return fares start from ج.م.‏ 11,163. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Philadelphia International to San Juan

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

Direct flights from Philadelphia International to San Juan

Philadelphia to San Juan: Flight information

The things to know before you go.
Cheapest flight foundج.م.‏ 4,289
Cheapest month to flyAugust
Average flight time3 hrs, 58 mins
Most popular airlineAmerican Airlines
Average flights per week77

Finding cheap flights from Philadelphia International 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 International to San Juan is ج.م.‏ 9,387. 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 58 minutes is the average flight time from Philadelphia International to San Juan.
American Airlines, Frontier Airlines and Qatar Airways fly direct from Philadelphia International to San Juan.
As of May 2026, there are 77 flights per week flying from Philadelphia International to San Juan.
The cheapest month to fly from Philadelphia International to San Juan is usually May.
If you're flying from Philadelphia International Airport, 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 ج.م.‏ 9,387.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to San Juan on Monday, 25 May 2026.
Yes – the average flight time is 3 hours and 58 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 May, 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.
Currently, Frontier Airlines offers the cheapest flight tickets to San Juan.

Flying from Philadelphia International Airport (PHL) to San Juan: what you need to know

  • The average time for a direct flight from Philadelphia International Airport to San Juan is 4 hours 5 minutes.

  • San Juan's timezone is UTC-4, which is the same as Philadelphia (the location of Philadelphia International Airport).

  • Philadelphia International Airport (PHL) to Luis Munoz Marin International Airport (SJU) is the most popular route, with 20 flights a week to pick from. If you have things to do before heading off, the last flight from PHL to SJU is with Spirit Airlines at 22:57. Choose the first departure operated by Frontier Airlines at 06:00 if you want to fly out earlier.

  • To avoid rushing for your PHL to San Juan flight, leave plenty of time for things like baggage drop and finding your gate. Turning up two hours ahead of international departures and one hour before domestic flights is the general rule.

  • Travelling during a peak time like a bank holiday? Expect longer queues at security and check-in. Give yourself extra leeway and arrive up to four hours before international flights and two hours before domestic departures.

  • Begin your trip at PHL and fly straight to Luis Munoz Marin International Airport (SJU). That's where you can expect to touch down when searching for Philadelphia International Airport to San Juan tickets.

  • You'll find a good selection of airlines that offer direct flights from Philadelphia International Airport to San Juan, including:

  • We make it easy to book flight tickets from PHL to San Juan with a stopover. To see the options, deselect 'Direct flights only.' Next, select a flight with a stop long enough to explore the city of your choice. Well-traveled stopover hubs include:

    • Newark Liberty International Airport (EWR)

    • Raleigh-Durham International Airport (RDU)

    • Cyril E. King Airport (STT)

  • PHL is about 11 kilometres from central Philadelphia. If you're catching a cab, driving or ride-sharing from the centre, it'll take you 15 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the travel time to be around 45 minutes.

  • Booked an early flight from Philadelphia International Airport to San Juan? Avoid the last-minute rush to the terminal (and catch some extra z's) by choosing one of these hotels near PHL:

  • 78.93% of flights leaving from Philadelphia International Airport touch down at their destination on time.

  • The address for PHL is 8500 Essington Ave.

How to find the cheapest flights from Philadelphia International Airport (PHL) to San Juan

  • The best price we've seen for a one-way Philadelphia International Airport to San Juan flight is ج.م.‏ 4,289. The cheapest price for a return flight is ج.م.‏ 9,387. Bear in mind fares may change due to demand at the time of booking.

  • Book one month before travelling. Pricing trends suggest that this is the ideal window for finding cheap flights from PHL to San Juan.

  • May is the best month for nabbing an amazing deal on Philadelphia International Airport to San Juan tickets. If you need to travel during a different time of year, the 'Whole month' tool will show you the lowest prices for every month.

  • Save time searching for cheap flights from PHL to San Juan by setting up a Price Alert. You'll get an email or push notification on the app when a lower fare pops up.

  • Save money on your flight from Philadelphia International Airport to San Juan with the help of our filters. Choose your ideal duration, number of stops and airlines, then sort the results by 'Cheapest' to see the best deals.

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to central San Juan takes around 10 minutes to reach by car. The centre is roughly 8 kilometres away.

  • It'll take around 55 minutes if you're travelling on public transport.

  • The last thing you want is a long journey to your hotel if you're getting in late on a flight from Philadelphia International Airport to San Juan. Reserve one of these accommodation options near SJU instead:

  • Begin your adventure by picking up a Luis Munoz Marin International Airport rental car. Grab your wheels from Sixt, Ace Rent a Car or U-Save to explore San Juan and beyond.

  • Lock in the best deal by reserving your vehicle from Luis Munoz Marin International Airport about two weeks before your flight from PHL to San Juan.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Fernando Luis Ribas Dominicci Airport (SIG) is about 8 kilometres from central San Juan. Following your flight from Philadelphia International Airport to San Juan, it'll take you around 15 minutes to reach the heart of the city in a ride-share or cab.

  • The trip will take about 1 hour on public transport.

  • Following your PHL to San Juan flight, unwind at a hotel close to SIG. These are some comfortable options that'll help you get into relaxation mode:

Best time to go to San Juan

  • Before scheduling your flights from Philadelphia International Airport to San Juan, consider which time of year is best for you. High season in San Juan offers a bustling atmosphere and plenty to do, while low season means you'll get better deals on hotels and fewer crowds.

  • Book a Philadelphia International Airport to San Juan flight ticket with a departure in September if you want to visit the city during its warmest month. You can expect temperatures to range from 23ºC to 33ºC.

  • February sees average temperatures of between 20ºC and 28ºC. Search for a cheap ticket from PHL to San Juan around that time if you like cooler conditions.

More about San Juan

  • Start your San Juan trip off on the right foot by choosing the perfect place to stay. As soon as you've booked your flight from Philadelphia International Airport to San Juan, explore our selection of accommodation options including:

  • La Garita del morro de san juan bahia and Castillo San Felipe del Morro are just a couple of the leading attractions to put on your San Juan to-do list. Keep the momentum going by heading to Fortaleza Street.

Explore more of Puerto Rico

  • Aguadilla is just one of the many places in Puerto Rico waiting to be explored once you've seen San Juan. Around 113 kilometres away to the west, popular attractions include El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • Around 105 kilometres west of San Juan, Isabela is another essential stop in Puerto Rico. Experience major highlights starting with Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania.

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