The best pricing can be found in the month of March. Prices to Philadelphia from Islip, New York average $236. You can even find prices in March for less than $236, as users have found deals to Philadelphia from as low as $158. The month of May appears to be one of the more expensive times to travel to Philadelphia from Islip, New York. Flying in the targeted month can save you up to 48%.
When flying from Islip, New York to Philadelphia, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
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