The Chiefs dominated at Arrowhead.
The Chiefs were on the board after just five minutes at a chilly Arrowhead Stadium, with Damien Williams scoring on a 10-yard rush.
Tyreek Hill doubled the lead with a scoring rush of 36 yards less than five minutes later and quarterback Patrick Mahomes – 27 of 41 for 278 yards – also ran in for a score.
The Colts’ sole score in the first half came off the back of a blocked Dustin Colquitt punt which was returned by Zach Pascal for a touchdown.
Andrew Luck hit TY Hilton for a score late in the fourth as a consolation, but Darrel Williams secured the win with a TD as the Chiefs advance and are one win away from the Super Bowl.