But a 9:00am flight back home on the day the cruise ship pulls back into homeport? Before I tell you a few things that worked out to my advantage, let’s look at a few reasons you should not book an early flight on debarkation day. Port delays . Take it from me, having a flight so early in the morning makes the entire debarkation day a stressful one. Take it from me, having a flight so early in the morning makes the entire debarkation day a stressful one.