Fairley had missed the season's first four games because of a left foot injury.
Fairley, a first-round draft pick from Auburn, had surgery on his foot early in training camp. He was at practice last week, but coach Jim Schwartz was noncommittal about whether he would be able to contribute against the Bears.
Detroit linebacker Justin Durant, who is recovering from a concussion, was deactivated after experiencing more symptoms shortly before the game.
Information from The Associated Press contributed to this report.