Originally Posted by
kochleffel
As already noted, airports in North America have little need for routine commercial operations during the wee hours of the morning.
John Wayne Airport (SNA, Orange County) has a curfew for commercial operations. It prohibits commercial departures between 10:00 PM and 7:00 AM (8:00 AM on Sundays) and commercial arrivals between 11:00 PM and 7:00 AM (8:00AM on Sundays). General aviation is not subject to the curfew. Commercial flights would be allowed to land for emergencies and, to some extent, for irrops, but a flight departing too late to arrive at SNA before the 11:00 PM curfew would most likely be canceled.
I was on a flight to SNA once that got re-routed to LAX due to missing the curfew. We got bussed to SNA and I believe they flew the aircraft empty to SNA the next morning.