$114 Cheap Frontier Airlines flights San Juan (SJU) to Philadelphia (PHL)

Make use of the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines return flights from $223 from SJU to PHL. Affordable one-way tickets from $114 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Search for one-way or round-trip flights to Philadelphia in January or February. You could find an affordable fare with Frontier Airlines during these off-peak times.

Look for Frontier Airlines flights from SJU to PHL about one month before you want to go. The cheapest time to reserve an international flight is usually 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of itinerary and fare class, the best day of the week to book international airfare is usually Sunday. Friday can be the most expensive. Travelers booking on a Sunday can save 17% on average compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Frontier Airlines operates direct flights from Luis Munoz Marin Intl. Airport (SJU) to Philadelphia Intl. Airport (PHL), with 17 weekly departures. Simply select the “Nonstop” and “Airline” filters while searching on Expedia to see all direct Frontier Airlines flights to PHL.

Leave Luis Munoz Marin Intl. Airport (SJU) for Philadelphia Intl. Airport (PHL) on a direct Frontier Airlines flight, and you’ll be in the air for about 4h 2m.

Wednesday has the most Frontier Airlines flights from Luis Munoz Marin Intl. Airport (SJU) to Philadelphia Intl. Airport (PHL). With 3 daily departures, this is the best day of the week to book something that will work for your schedule.

The earliest Frontier Airlines flight from SJU to PHL takes off at 11:49AM UTC-4, landing at 2:51PM UTC-5. If you’d like to jet off later in the day, the last Frontier Airlines flight leaves SJU at 9:45PM UTC-4 and lands at PHL at 12:47AM UTC-5. Flying early is generally a good option as morning and mid-morning flights are 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Most Frontier Airlines flights from Luis Munoz Marin Intl. Airport (SJU) to Philadelphia land at Philadelphia Intl. Airport (PHL). This is the airline’s main point of entry to this destination. It’s also worth checking Expedia for flights to nearby airports such as Wilmington, DE (ILG-New Castle), as prices may be cheaper.

Journey from SJU to PHL with Frontier Airlines and look forward to a range of perks including a rewarding loyalty program. When you book through Expedia as a Frontier Miles and One Key™ member, you may also earn OneKeyCash™* to redeem on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Frontier Airlines generally flies Airbus A321neo planes for flights from Luis Munoz Marin Intl. Airport (SJU) to Philadelphia Intl. Airport (PHL). This airline also operates the Airbus A320neo on this route. Remember that aircraft type can change depending on operational demands, so the plane you board could be different on the day.

Changes are usually free within 24 hours of booking, but your airline may charge a fee after that. For further information about altering your reservation, go to your “Trips,” select your flight and click on “Manage Booking.” If you want the flexibility to make changes without additional charges, apply the “Changes included” and “No cancel fee” filters when planning your next escape.