Question: what is delta oy class?
Answer: Delta Fare Class OY. Fare class OY is a revenue fare class of service that is used for cleared upgrade space into Delta One on Delta Air Lines mainline and code share flights. Also referred to as: Booking Class OY, Booking Code OY, Fare Class OY, Ticket Code OY, Class OY, or OY Fare. Boarding zone. BOARDING ZONE.