From the Princess website.....
"FlightChoicesm, a new program that gives passengers details of their Seabird Air schedule approximately 60 days prior to their cruise - more than a month sooner than the industry norm. With this new service, passengers now have twice the time to review their flight itinerary as reserved by Princess and, if it doesn't meet their needs, they will have the option to choose a customized air schedule."
Call your TA now. They should be able to get your flight schedule for you!