Up in the Air is a 2009 American comedy-drama film directed by Jason Reitman. It was written by Reitman and Sheldon Turner, based on the 2001 novel Up in the Air by Walter Kirn. The story is centered on traveling corporate "downsizer" Ryan Bingham (George Clooney). Vera Farmiga, Anna Kendrick, and Jason Bateman also star. Up in the Air was primarily filmed in St. Louis with additional scenes shot in Detroit, Omaha, Las Vegas, and Miami.

Reitman promoted Up in the Air with personal appearances at film festivals, starting with Telluride on September 5, 2009. Following a Los Angeles premiere at the Mann Village Theater in November, Paramount Pictures gave Up in the Air a wide release on December 23, 2009.

Up in the Air was met with critical acclaim, for Reitman's screenplay and direction, and the performances by Clooney, Farmiga, and Kendrick. The film received several accolades, including six nominations each at the Oscars and the Golden Globes, winning Best Screenplay at the latter. A number of critics and publications included Up in the Air on their lists of the best films of 2009.