The Bills beat the Dolphins, then Andy Dalton and the Bengals beat the Ravens, putting the Bills back in the NFL playoffs for the first time since 1999.
400 fans greeted the team at the Buffalo airport when they returned at about 1 am Monday.
The Bills face former coach Doug Marrone and the Jacksonville Jaguars on Sunday at 1 pm, as 7-1/2 point underdogs.
Running back LeSean McCoy hopes his injured right ankle can heal enough to play.
Bills fans have been donating to the Andy and Jordan Dalton Foundation in $17 dollar increments for the 17 seasons since they made the playoffs.