Starting in May, the U.S. government is ordering airlines to double the compensation they must pay passengers bumped from oversold flights.

Fliers who are involuntarily bumped would receive up to $400 if they were rescheduled to reach their destination within two hours of their original arrival time, or four hours for international flights, and up to $800 if their arrival was delayed longer.

The new bumping rule covers more flights, including planes seating as few as 30 travelers. The current rule covers flights with 60 seats or more.

The amount of the payment will be determined by the price of the ticket and the length of the delay, and is in addition to the value of the passenger's ticket, which can be used for alternate transportation or can be refunded.