| ArrivalDateTime | Specifies the arrival date and time of a flight. |
| DepartureDateTime | The date and time of the flight segment departure. |
| FareBasisCode | The fare basis code for this flight leg. |
| FlightNumber | The flight number of the flight. This is required for use with scheduled airline messages but may be omitted for requests by tour operators.Identifies a flight number (1 to 4 numbers followed by optional uppercase A - Z, which specifies an operational suffix) or OPEN or ARNK. |
| FlownMileageQty | The quantity of flown miles associated with this segment. |
| GovernmentApprovalInd | When true, indicates that the flight is subject to government approval. |
| GovernmentApprovalText | Provides additional information concerning the flight being subject to government approval. |
| InfoSource | Used to specify the source of the data being exchanged as determined by trading partners.Used to specify the source of the data being exchanged. |
| ResBookDesigCode | Specific Booking Class for this segment.Used for an Alpha String, length 1 to 2 (for letter codes). |
| RPH | Reference place holder for this flight segment. |
| StopQuantity | The number of stops the flight makes. |
| TourOperatorFlightID | ID of a flight in the Tour Operator's inventory. This flight is not necessarily in the inventory of an airline. Rather, it is a code created by tour operators. |