Planes, Trains and Automobiles is a 1987 American comedy-drama film written, produced, and directed by John Hughes and starring Steve Martin and John Candy, with supporting roles by Laila Robins and Michael McKean. It tells the story of Neal, a high-strung marketing executive, and Del, a good-hearted but irritating shower curtain ring salesman, who become travel companions when their flight is diverted and embark on a three-day odyssey of misadventures trying to get to Chicago in time for Neal's Thanksgiving Day dinner with his family.

The film received critical acclaim, with many praising it for Hughes branching out from teen comedies, and for Candy's and Martin's performances. Watching it has become a Thanksgiving Day tradition for many.