| BackhaulIndicator | If true, include connections where one of the enroute stops is the same as the initial board point or the final off point of the flight. |
| DirectAndNonStopOnlyInd | If true, direct and non-stop flights are requested. |
| ExcludeTrainInd | When true, exclude connections that include travel by train for one of the legs. |
| FlightType | Indicates type of stops preferred (Nonstop, Direct, Connection).Specifies a particular type of flight (e.g. direct, stopover). |
| GroundTransportIndicator | If true, include flights that include at least one leg that is ground transportation. |
| MaxConnections | Indicates that if connection is chosen, then this attribute defines the maximum number of connections preferred. |
| NonScheduledFltInfo | To specify which types of non-scheduled air service should be included. |
| NonStopsOnlyInd | If true, only non-stop flights are requested. |
| OnlineConnectionsOnlyInd | If true, only online connection flights are requested (i.e., same marketing airline). |
| RoutingType | Specifies the travel routing preference. |
| PreferLevel | Used to indicate a level of preference for an associated item. |