Cheap Flights from Philadelphia to San Juan from $72

Frequently Asked Questions

• What are the cheapest flights from Philadelphia to San Juan (PHL-SJU)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $72 on Cheapest nonstop routes (e.g. PHL to SJU on Wed, Sep 9), while Frontier Airlines offers Cheapest nonstop round-trips from $140 departing on Tue, Sep 1 and returning on Thu, Sep 3.

• Which airlines offer direct flights from Philadelphia to San Juan?

  At the moment, you can catch a nonstop flight from Philadelphia to San Juan with the following airlines, including: Frontier Airlines American Airlines Jetblue Airways Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Philadelphia (PHL) to San Juan (SJU) and what is the distance?

  It takes around 4 hours 2 minutes to fly from Philadelphia (PHL) to San Juan (SJU).

• When is the best time to book flights from Philadelphia to San Juan?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Philadelphia to San Juan is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Philadelphia to San Juan?

  Based on Trip.com data in the past 4 weeks, there is 38 flight per week flying from Philadelphia to San Juan. You can check the weekly schedule for popular airlines on this route below: Frontier Airlines: S/M/T/W/T/F/S -- F91166 (12:12) Frontier Airlines: S/M/T/-/T/F/- -- F91726 (00:02) American Airlines: S/M/T/W/T/F/S -- AA614 (10:00)

• How can I find the best deals on flights from Philadelphia to San Juan?

  To find best deals on flights from Philadelphia to San Juan, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Sep 9, with one-way flights priced at just $72.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Frontier Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for San Juan travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Philadelphia (PHL) to San Juan (SJU) the cheapest?

  The cheapest months to fly from Philadelphia to San Juan is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Philadelphia to San Juan on?

  After crunching the numbers on our August flight calendar, it's currently cheapest to fly from Philadelphia to San Juan on August 31, 2026 with Frontier Airlines, with prices starting at $151.

• Which airports can I fly to for San Juan from Philadelphia?

  You can land at any one of the following hubs in San Juan, with Philadelphia International Airport to Luis Munoz Marin International Airport (PHL-SJU) is by far the most common option on this route: Luis Munoz Marin International Airport (SJU) Fernando Luis Ribas Dominicci Airport (SIG).

• Is there any time difference between Philadelphia and San Juan?

  The time difference between San Juan and Philadelphia is 1h.

• How do I change or cancel my ticket from Philadelphia to San Juan?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Philadelphia to San Juan?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Philadelphia to San Juan is $202. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Philadelphia to San Juan?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Philadelphia to San Juan is $321. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Philadelphia to San Juan on Trip.com?

  Enter Philadelphia and San Juan, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Philadelphia to San Juan route?

  Frontier Airlines and Jetblue Airwaysare the most popular budget airlines flying from Philadelphia to San Juan. Check baggage, seat and payment fees before comparing the final price.