And I'm just coming back to this thread because I learned something today. There are no flights from Singapore to JFK, but there is one to Newark. It's the longest scheduled air route in the world, at 18 hours and 40 minutes.
Oh, and it's in a 100-seat all-business-class A340-500. I'm guessing they couldn't do it with a fully-laden economy section. Then again I'd hate to fly 19 hours nonstop in economy.
All I see is schedules of direct flights, making it orders of magnitude less useful than, say, hipmunk.
If it could plot non-nonstop routes and quote me prices for specific days, then it'd be really disruptive. But as it is, if I want to go somewhere surely I'll take the extra few seconds to check a proper travel site?
Did you RTFA? Google's made a recent major acquisition in this field that will give them access to the data you mention, but they haven't had a chance to use it yet; this is a very preliminary product.