Duty-free shop
Duty-free
DS – Decision Source
Drop-off charge
DRA – Data Release Authorization
Down grade
Double occupancy
Double booking
Double
Domestic travel
Domestic package
Domestic flight
DOJ – Double open jaw
Discount fare
Directional fare
Direct flight
Direct fare
Differential
Destination Management Company
Destination
Deregulation
Delegate rate
DBC – Denied boarding compensation