Delta is taking the in-flight experience to new heights this fall. Customers will enjoy an all-new seatback entertainment experience through Delta Sync unlocked by SkyMiles Membership rolling out to select aircraft now, and a fresh selection of hit movies and shows.Delta is taking the in-flight experience to new heights this fall. Customers will enjoy an all-new seatback entertainment experience through Delta Sync unlocked by SkyMiles Membership rolling out to select aircraft now, and a fresh selection of hit movies and shows.