S.678: A bill to amend title 49, United States Code, to ensure air passengers have access to necessary services while on a grounded air carrier and are not unnecessarily held on a grounded air carrier before or after a flight, and for other purposes.

Airline Passenger Bill of Rights Act of 2007 - Requires each air carrier, in the case of a delayed departure, to provide passengers with: (1) adequate food, potable water, and restroom facilities; and (2) an option to deplane, with exceptions, if more than three hours have elapsed, and during any subsequent three-hour periods of delay.