Olsen's Hangover actor boyfriend, Justin Bartha, was also on the plane, according to fellow passenger Phil Lobel, an L.A.-based publicist.
The flight from JFK bound for Los Angeles landed safely at Washington Dulles International Airport at about 9:30 p.m. after an electrical fire caused a crack in the plane's windshield, according to Lobel.
Fire trucks and other emergency vehicles met the plane on the runway. No one was hurt, according to Lobel. Passengers were rebooked on flights leaving this morning for LAX. No word on where they spent the night.
A rep for Olsen confirms she and Bartha were on the flight and are OK.
Source: E!