Goran Dragic added 21 points and Eric Bledsoe 20 for the Suns. Marcus Morris made three fourth-quarter 3-pointers and scored 18.
Thaddeus Young scored 30 points, Michael Carter-Williams 27 and Tony Wroten 22 for the 76ers, who lost their 13th road game in a row and have dropped nine of 10 overall.
Evan Turner, Philadelphia's leading scorer at 19.3 points per game, sat out to rest his sore right knee.
Phoenix lost 115-86 at Golden State on Friday night. The 76ers hadn't played in a week and had been in Arizona since Thursday.