From Jetnet on traveling as a through passenger.
Read it and figure out if you can or can not list as a through.
Through Passengers
Space available passengers traveling through a city or connecting to another flight have
boarding priority over local boarding passengers in the same travel classification. Upon
check-in at the intermediate/connecting city, please advise the agent you are a through passenger (as designated by a T after your travel classification; for example D2T). You must show your boarding pass or other documentation that confirms you were on the inbound flight.
If you are a through passenger, you will be placed on the priority list of the intermediate/connecting city once you have been accommodated at the originating city. If your connection time at the intermediate city is 12 hours or more you must check in with an agent and ask to be placed on the Priority List as a through passenger; you must show the agent your boarding pass from the inbound flight.
In order to be considered a through passenger at an intermediate city, you must:
Arrive at the intermediate city on a through (continuing) flight. When connecting from one flight to another, Sabre will automatically check you in as a through passenger on the connecting flight once you have been accommodated at the originating city as long as all of the flights are contained in a single reservation.
Arrive on a flight or other airline-provided transportation (for example, bus, train, etc.) at the intermediate city and check in for the first connecting flight (same day or next day) to your next destination. If you arrive the day before the first connecting flight, it is not necessary for you to arrive on the last arriving flight in the intermediate city.
Arrive on a flight at the intermediate city but cannot be accommodated to your destination due to revenue demands and/or higher priority standbys. You will then be transferred to the next eligible flight as a through passenger.
Arrive in/out of the same intermediate city (co-terminal). For example, you travel LHR-JFK and then depart later that same day LGA-ORD. You will be added to the Priority List as a through passenger from LGA-ORD.
If you and/or your
eligible travelers travel to a city using full-fare or
AA20 tickets, then continue the trip as a non-rev, you will be considered through passengers, provided you stand by for the next flight on the same day to your final destination. Please note that your non-revenue segments for connecting travel must be in a separate PNR.
Employees, including Flight Crewmembers, traveling on
Company business will not be considered through passengers if they continue their travel for pleasure. For example, a Flight Attendant based in DFW but lives in AUS - the last leg of his/her trip is the MIA-DFW flight and they want to travel back home to AUS; they would travel D2 on the flight to AUS and would not be considered a through passenger.
Similarly, an employee is based in DFW but has to travel A11 to LGA. After the business meeting is over, the employee wishes to travel to PHX for pleasure. The employee may travel LGA-DFW as A11 but must travel D2 from DFW-PHX. He or she will not be considered a through passenger when checking in for the DFW-PHX flight.
You may be considered through at your home or base station, provided you started travel from another station and did not travel to that station for the sole purpose of obtaining through status.