The highest grossing Christmas movie of all time was the 1990 hit Home Alone. It brought in $285.8 million dollars during its original release, making it the 37th highest grossing film of all time. Home Alone is also in the Guinness Book of World Records as one of the highest comedy box office grosses with $533 million internationally. The 2000 version of How the Grinch Stole Christmas is second with $260 million and Home Alone 2 is third with $173.6 million.
Source: http://www.examiner.com/movie-in-nashville/top-grossing-christmas-movies