The Jets and Cherokee tied with 46 points, but Metro gains the playoff spot by virtue of more wins (22) than Toledo (20).
"Top to bottom, I feel like that was our best 60-minute effort of the year," said Jets' coach Justin Quenneville. "Like I tell the guys everyday, we have to look at this season as a progressive chart moving upward and not only did they work hard, but they bought in, kept it simple and were rewarded for their decisions."
Cooper McLean scored twice with an assist for the Jets, while Brad Hepler, Kyle Shreve and Cody Jones all tallied a goal and an assist in the win.
Jets' goaltender Kam Limburg stopped all 16 shots between the pipes.
"Not a bad time to get his first shutout of the season," quipped Quenneville.
Aaron Callan made 26 saves for the Cherokee.
The Jets (22-24-2) move on to play the Flint Jr. Generals in the first round of the playoffs. A schedule will be released early next week.
"Everyone starts at zeroes in the playoffs," Quenneville said. "We're excited about the opportunity to play them - you want to play against the best and you want to beat the best."
Flint won all eight meetings this season against the Jets.