| ArrivalAirport | Arrival point of flight segment. |
 BookingClass | Reservation booking codes for a particular flight segment. |
| Comment | Any special comments on the leg. eg. operated by XX.Textual information to provide descriptions and/or additional information. |
| DaysOfOperation | Identifies the days of week the flight operates.Collection of operation schedules. |
| DepartureAirport | Departure point of flight segment. |
| Equipment | The type of equipment used for the flight.Specifies the aircraft equipment type. |
| MarketingAirline | The marketing airline. This is required for use with scheduled airline messages but may be omitted for requests by tour operators. |
| MarketingCabin | Identifies the marketing name for the cabin. This is the supplier cabin identifier as opposed to the generic industry term for the cabin.Marketing name for the First, Business or Economy cabin. |
| OperatingAirline | The operating airline of the flight if it is a codeshare flight.Identifies the operating carrier and flight number. |
| TPA_Extensions | A placeholder in the schema to allow for additional elements and attributes to be included per Trading Partner Agreement (TPA).Allows extensions to be added to the OpenTravel specification per trading partner agreement. |
| TrafficRestrictionInfo | Traffic restriction information for a specific flight. |
| ArrivalDateTime | Specifies the arrival date and time of a flight. |
| DateChangeNbr | When present, contains the number of days by which the flight's arrival date differs from its departure date. |
| DepartureDateTime | The date and time of the flight segment departure. |
| FareBasisCode | The fare basis code for this flight leg. |
| FLIFO_Ind | When true, FLIFO information exists for this flight. |
| 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. |
| JourneyDuration | The duration of the flight from departure location to destination location. |
| OnTimeRate | Specifies the Dept. of Transport on time rate of the flight. |
| ParticipationLevelCode | To specify the level of participation by a vendor in another system. Refer to OpenTravel Code List Participation Level Code (PLC). |
| 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. |
| ScheduleValidEndDate | Identifies the end date for the scheduled flight. |
| ScheduleValidStartDate | Identifies the start date for the scheduled flight. |
| 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. |
| SmokingAllowed | Indicates smoking is allowed when true and is not allowed when false. |