This is a great sale to/from Honolulu or Maui from Philly. There are also great prices from Newark at $558! Pricing will vary slightly depending on routing.
These prices are valid for travel until early May for Monday through Thursday departures and returns. Must purchase at least 1 day in advance of departure and unfortunately I think by TODAY! Use a site like Kayak or Momondo to purchase!! They'll direct you right to the Delta website! Aloha!!