With the two victories, the Jets finish with a 15-29-1-0 record, their best in five seasons.
Saturday night, Matt Stirling, Brett Grech and Mike Moroso scored in the second period and Metro held on for a 4-3 win.
Matt Stemkoski scored what proved to be the game-winner at 13:22 of the third period as Quad City scored two late goals to make the game close.
Goaltender Matt Braun finished with 45 stops for the win.
Sunday afternoon, Eric Trunick made 40 saves as the Jets skated away with a convincing 4-1 win.
Stirling and Grech each had a goal and two assists to lead the attack, while Moroso and Tommy Burns also tallied.
The Jets will now start preparations for the 2011-2012 season with summer tryout camps and the NA3HL Entry Draft. Stay tuned to MetroJetsHockey.com for all the offseason news out of Lakeland Arena.
NA3HL PLAYOFFS SET
The first round of the postseason showcases four best-of-three series in which the No. 1 seed (St. Louis) hosts the No. 8 seed (Quad City), No. 2 (Cleveland) hosts No. 7 (Queen City), No. 3 (Peoria) hosts No. 6 (Toledo) and No. 4 (Chicago) hosts No. 5 (Pittsburgh).