Cheap flight tickets from Philadelphia International to San Juan Luis Munoz Marin

Compare Philadelphia International to San Juan Luis Munoz Marin flight deals

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

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Flight deals from Philadelphia International Airport to San Juan Luis Munoz Marin Airport

Looking for a cheap last-minute deal or the best return flight from Philadelphia International Airport to San Juan Luis Munoz Marin Airport? If you want to travel next month, return fares start from RM684. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Philadelphia International to San Juan Luis Munoz Marin

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 Luis Munoz Marin flights are currently cheapest in December.

Direct flights from Philadelphia International to San Juan Luis Munoz Marin

Philadelphia International to San Juan Luis Munoz Marin: Alternative routes

Compare routes from Philadelphia International to San Juan below. You may find an airport to fly into that's cheaper, faster, or easier than San Juan Luis Munoz Marin.

Philadelphia to San Juan: Flight information

The things to know before you go.
Cheapest flight foundRM557
Cheapest month to flyNovember
Average flight time3 hrs, 54 mins
Most popular airlineAmerican Airlines
Average flights per week67

Finding cheap flights from Philadelphia International to San Juan Luis Munoz Marin: Frequently asked questions

The best price we found for a return flight from Philadelphia International to San Juan Luis Munoz Marin is RM557. 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 54 minutes is the average flight time from Philadelphia International to San Juan Luis Munoz Marin.
American Airlines, Qatar Airways and Frontier Airlines fly direct from Philadelphia International to San Juan Luis Munoz Marin.
As of October 2025, there are 67 flights per week flying from Philadelphia International to San Juan Luis Munoz Marin.
The cheapest month to fly from Philadelphia International to San Juan Luis Munoz Marin is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Philadelphia International Airport to San Juan Luis Munoz Marin Airport on Wednesday, 5 November 2025.
Yes – the average flight time is 3 hours and 54 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 Luis Munoz Marin 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.
Currently, Frontier Airlines offers the cheapest flight tickets to San Juan Luis Munoz Marin.

Travelling from Philadelphia International Airport (PHL) to Luis Munoz Marin International Airport (SJU): what you need to know

  • Take a direct flight from Philadelphia International Airport to Luis Munoz Marin International Airport and you'll be in the air for an average of 3 hours 55 minutes.

  • Philadelphia and San Juan are both in the UTC-4 timezone. This means there's no time difference to consider.

  • Flights from PHL to SJU start from 05:05 — the earliest with Frontier Airlines. The latest departure is at 23:59 with Frontier Airlines. Overall, there are 29 weekly Philadelphia International Airport to Luis Munoz Marin International Airport flights.

  • To ensure you catch your PHL to SJU flight, allow plenty of time to navigate the airport and find your gate. Arriving two hours before international departures and an hour before domestic flights is the general travel rule.

  • Flying during a peak month like August? Public holidays and other popular seasons can mean longer queues and delays at check-in and security. Play things extra safe and get there up to four hours before an international flight and two hours before a domestic departure.

  • You'll find a range of airlines offering direct flights from Philadelphia International Airport to Luis Munoz Marin International Airport. When you're ready to start your San Juan adventure, let one of these carriers fly you to this must-see corner of Puerto Rico:

  • American Airlines has the highest passenger demand on this route.

  • With a reliable 80.0% of services arriving on schedule, American Airlines is the most punctual carrier offering PHL to SJU flights.

  • If you want to split up your journey, simply deselect 'Direct flights only' when searching for your ticket from Philadelphia International Airport to Luis Munoz Marin International Airport. Here are the most popular stopovers between PHL and SJU:

    • Cyril E. King Airport

    • Newark Liberty International Airport

    • Raleigh-Durham International Airport

How to find the cheapest flights from Philadelphia International Airport (PHL) to Luis Munoz Marin International Airport (SJU)

  • RM244 is currently the best price for a one-way Philadelphia International Airport to Luis Munoz Marin International Airport flight. Return flights start at RM559. These prices can change depending on demand and availability.

  • Get cheap tickets from PHL to SJU by booking at least six months ahead. According to our research, that's the sweet spot for landing a bargain.

  • Organise your trip for May. That's the cheapest month for flights from Philadelphia International Airport to Luis Munoz Marin International Airport. If you have flexibility with your dates, try out the 'Whole month' tool to find the lowest price across every month.

  • Save time searching for cheap flights from PHL to SJU by creating a Price Alert. We'll send you an email or notification on the app when a lower fare becomes available.

  • Lock in the ideal flight for you with the help of the filters. To see the 'Best,' 'Fastest' or 'Cheapest' flights from Philadelphia International Airport to Luis Munoz Marin International Airport, use the 'Sort by' tool. You can also filter by arrival and departure times, airline, and journey duration.

Handy information about Philadelphia International Airport (PHL)

  • The address for PHL is Industrial Highway and Island Road.

  • When it comes to Philadelphia International Airport's on-time performance, 78.93% of flights complete their journey on time.

  • Central Philadelphia to Philadelphia International Airport is around 19 kilometres. Depending on traffic, it'll take about 15 minutes to get there if you're ride-sharing, catching a cab or driving.

  • You can expect a trip time of around 45 minutes when using public transport.

  • Get your break off to a hassle-free start by staying near PHL. Whether you're boarding an early flight from Philadelphia International Airport to Luis Munoz Marin International Airport or just don't like being rushed, these hotels are perfect:

Arriving at Luis Munoz Marin International Airport (SJU)

  • If you have a late Philadelphia International Airport to Luis Munoz Marin International Airport flight, few things top the convenience of being near the terminal. Pick up your bags from the carousel and then be showered and snoozing soon after at one of these accommodation options near SJU:

  • Go wherever you want, whenever you want with a Luis Munoz Marin International Airport rental car. Pick up your wheels from Sixt, Ace Rent a Car or U-Save and find adventure across San Juan and beyond.

  • Secure the lowest price by reserving your ride from Luis Munoz Marin International Airport around two weeks in advance of your trip.

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

  • Luis Munoz Marin International Airport to the centre of San Juan has a drive time of around 10 minutes. It's approximately 8 kilometres away.

  • When travelling by public transport, expect a journey time of around 55 minutes.

When to fly to Luis Munoz Marin International Airport (SJU)

  • It's time to plan your trip dates for your flight from Philadelphia International Airport to Luis Munoz Marin International Airport. July is the busiest month to visit San Juan. If you prefer a quieter vibe, go in May.

  • The warmest month in San Juan is September, with temperatures ranging between 23ºC (73ºF) and 33ºC (91ºF). Book your flights from Philadelphia International Airport to Luis Munoz Marin International Airport in this month if this is the type of weather you like.

  • For cooler conditions, look for a cheap ticket from PHL to SJU in February. Temperatures average between 20ºC (68ºF) and 28ºC (82ºF) then.

Explore more of Puerto Rico

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

  • If you're looking to explore another major stop in Puerto Rico, consider Carolina, about 11 kilometres east of San Juan. Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track are among its highlights.

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