The deal keeps Fleck at Western Michigan through the 2020 season and makes him the highest-paid coach in the MAC, providing $800,000 per year in total compensation.
Fleck was hired following the 2012 season at the age of 32, becoming the youngest head coach in Division I-FBS.
After going 1-11 in his first season with the team, Fleck has led the Broncos to an 8-4 record so far this season, accounting for the largest turnaround in school and conference history. He was named MAC Coach of the Year this season as a result.
Western Michigan is playing in its first bowl game since the 2011 season, and the eight wins are the school's most since it won nine games in 2008.
Before joining Western Michigan, Fleck, a former receiver for the San Francisco 49ers from 2004-05, spent a season as the receivers coach for the Tampa Bay Buccaneers.
- Ben Estes