Try JFK-ICN, leaves at 12:30AM eastern, gets into ICN at 3:45AM . Flight time 14.5 hours. Oh yeah, and the airport buses don't come until 5:40 so you're stuck there until then. I think the plane sits there until it flies off somwhere sometime between 9 and 10. But the last time I flew redeye within the states the plane showed up, offloaded pax, cleaned, loaded pax, and then flew back out. I think the turn was 90 minutes or so, which seems really long for an A320.