His son, Wade Phillips, tweeted the news Friday night.
"Bum is gone to Heaven-loved and will be missed by all -great Dad,Coach, and Christian," Wade Phillips said.
Bum Phillips was 90 years old.
The Saints hired Bum Phillips was the eighth coach in team history in 1981. The Saints went 4-12 in 1981, 4-5 in the strike-shortened '82 season, 8-8 in '83, 7-9 in '84 and 4-8 in 1985 before Phillips resigned.
His son replaced him.
Phillips also coached the Houston Oilers. He lead the Oilers to their first of three-straight playoff appearances.