| ArrivalAirport | Arrival point of flight segment. |
| AvailableSeats | A collection of seat availability by class. |
| DepartureAirport | Departure point of flight segment. |
 Equipment | The type of equipment used for the flight.Specifies the aircraft equipment type. |
| OperatingAirline | The operating airline of the flight if it is a codeshare flight.Identifies the operating carrier and flight number. |
| Passengers | Reference Place Holders of the passengers travelling on this flight segment. |
| SupplementCharges | A value representing a supplement for this journey (e.g. Aberdeen to Palma) over the cost of the journey on which package basic price is calculated (e.g. Gatwick to Palma). The element repeats to allow for charges in an alternative currency to be shown.A value representing a supplement for an item over the cost of the item on which a package basic price is calculated; may be repeated for multiple currencies e.g. GBP and Euros. |
| 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. |