It’s generally more expensive to depart on a Wednesday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.
To save up to 27% on this flight, we recommend booking at least 60 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Philadelphia to Islip from $263 1-2 weeks out and tickets from $320 for flights departing within the next 72 hours.
The best pricing can be found in the month of February. Prices to Islip from Philadelphia average $253. You can even find prices in February for less than $253, as users have found deals to Islip from as low as $124. The month of July appears to be one of the more expensive times to travel to Islip from Philadelphia. Flying in the targeted month can save you up to 22%.
It’s optimal to fly from Philadelphia to Islip in the afternoon. By choosing this option you can save up to 17% on the cost of your flight, compared to a flight in the morning.