1. To deplete, use up, or go through something very quickly and easily. We're sailing through the milk—I already need to pick up another gallon. I'm laid up in bed sick, so I've been sailing through all 10 seasons of the show.

2. To complete, accomplish, or progress through something quickly and with ease. I don't know why I was so worried; I sailed through the test! I have both an EU and US passport, so I always sail through customs no matter which direction I'm traveling.