Ashley Olsen and her boyfriend, 'Hangover' star Justin Bartha, were en route from New York to Los Angeles aboard an United Airlines flight last night when a small cockpit fire forced the plane to make an emergency landing at Dulles International Airport.

The cockpit's windshield was damaged, although it was unclear how, an FAA spokesperson told CNN. The blaze was controlled before the plane landed, although its cause hasn't been determined.

A rep for Olsen confirmed to E! Online that she and Bartha are safe and sound.