Melissa Leo is the latest passenger to join Flight.
The Oscar-nominated actress from The Fighter is said to have been added to the cast, which already includes Denzel Washington, Don Cheadle and John Goodman, according to The Hollywood Reporter.
Denzel is on board in the drama as a commercial airline pilot who lands a damaged plane, but is later revealed to be an alcoholic and drug addict - and Melissa would be an investigator keen to expose him for negligence.
Garcelle Beauvais, James Badge Bale and Kelly Reilly are also reported to be in Robert Zemeckis' film.
Flight is gearing up to take off this autumn for a potential 2012 release.