Zoom Airlines launches service today between New York (JFK) and London Gatwick, and fares are quite cheap. They seem to start at about $77 to London and $199 back — about $435 including all taxes for summer travel. That’s about half what others are charging. Premium Economy fares (about 36" of legroom) are in the $825 range. Be careful when you book, though, as flights stop in Bermuda a couple of days a week.