There’s an online sharing marketplace for everything these days. The latest vertical to pop up on our radar: private flights.

Boston startup Flytenow is working to do just that, and startup incubator Y Combinator is putting its money behind it as part of its current batch of startups.

The problem for folks who have a private pilot’s license is that flying alone can be expensive (both owning and renting a plane, as well as fuel costs). At the same time, lots of non-pilots would love to take some flights, either for fun or to get from one place to another.

To help both groups — pilots and would-be passengers — Flytenow has built a flight-booking site on which pilots post the trips, called “adventures,” they’re planning to take.

Venture Beat