Whether you use Princess for air or book your own air you may be using Alaska Air, they are one of the airlines PCL uses frequently. If you're doing a one way sailing either north or south bound it may be wise to do cruiseline air as the transportation and travel time requirements may present challenges. The two Alaska piers, Whittier and Seward are 1 1/2 and 2 hour commutes from Anchorage airport. If you're doing a round trip from either Seattle or Vancouver you'd probably save a substantial sum of money booking your own air. If you have the hotel booked through PCL they'll still offer transfers from airport to hotel and hotel to pier as well as pier to airport at the end. Hope this helps.