OPTION 1: Two (2) Roundtrip Skymiles Award Tickets on DELTA Airlines. These tickets have restrictions because award travel availability depends on the flight, the date of travel, the expected demand for the flight, the season, the destination, and various other factors. Booking these tickets four to six months in advance will allow for a greater selection and availability. OPTION 2: Book one (1) Roundtrip Skymiles award ticket with SkyChoice. Perfect for flying a family member home from college.