Find cheap flights from Islip to Philadelphia from $152

In the last 3 days, the lowest price for a flight from Islip, New York to Philadelphia was $152 for a one-way ticket and $333 for a round-trip.

A passport is not required to fly from Islip to Philadelphia.

We unfortunately don’t have that data for this specific route.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Islip to Philadelphia.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Islip is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Islip with another airline. Booking your flights between Islip and PHL can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Islip up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.