Question : How long do most people visit Copenhagen?
Answer : Of course you're not most people, but if you were, you'd stay roughly three days.
Question : Is there an alternative to London City Airport (LCY) for getting you to Copenhagen?
Answer : London Heathrow Airport is just 22 miles away, and, on average, flights are 28% cheaper for the next few months. Save a few bucks and put it toward your next trip.