The Ravens couldn't anything going on their first drive of the second half, going three and out.
But Sam Koch pinned the Jets down to their own 2 with a season-long 64-yard punt. The Ravens forced a three-and-out and then got the ball back at the New York 33, already in field goal range.
Baltimore couldn't move the ball from there, but added another three points to its advantage, taking a 12-3 lead on Justin Tucker's season-best 53-yard field goal just under five minutes into the second half.
Tucker is now 4-for-4 on the day and might be the star of the game, aside from the Ravens defense as a whole. The Ravens have held the Jets to just 78 yards in the game's first 35-plus minutes.
Update: The Ravens' fifth scoring drive of the day finally produced seven points.
Joe Flacco lofted a 66-yard touchdown pass to Jacoby Jones just beyond the Jets' set of defensive backs, leading the speedy wideout and letting him sail the rest of the way into the end zone.
That increased Baltimore's lead to 19-3 with just 15:15 to go in the game.
Flacco has now passed for 254 yards, a touchdown and an interception. Jones has four catches for 103 yards and a touchdown.
Also, Torrey Smith made a 14-yard reception on the three-play, 88-yard drive. That gave him 859 receiving yards on the season, a career high.
Baltimore is outgaining New York 293-144 through three quarters and Geno Smith is just 4-for-11 for 42 yards and an interception. The pick was by Corey Graham, and returned the ball to the Ravens for that last drive.
Update II: The Ravens put together perhaps their most complete performance of the season at exactly the right moment.
With the Jets at M&T Bank Stadium for a critical matchup in the race for the AFC's second wild card, the Ravens dominated New York in every facet for a 19-3 victory that improved their season record to 5-6.
Facing the top-ranked run defense in the NFL, Baltimore didn't need its ground game. The Ravens were able to capitalize on deep passing to move the offense. They shut down the Jets offense with both big plays and steady play up front.
And on special teams, Tucker booted four field goals while Koch twice pinned the Jets inside their own 10.
The Ravens entered the day trailing New York by a game in the race for the second wild card, and managed to improve their postseason positioning exponentially. A loss would've been a crushing blow, but Baltimore doesn't have to worry about that after starting a three-game homestand on the right foot.