I'm guessing it's this flight: https://www.flightradar24.com/data/flights/5x11 Same time schedule as the one yesterday from Seoul to Cologne. I'm more unsure about the part after it gets to Cologne. Might be that UPS doesn't have as many trucks driving around on Saturday, so that's why it'll come on Monday?Don’t assume the same flight plans for every day. Actually Seoul airport’s website can show cargo schedules. Best to look at the same day of the week from last week to compare.