The Flames did not disclose the reason for Jagr's absence from the lineup. Jagr, 45, has seven points (goal, six assists) in 22 games.
Jagr, who has missed seven of the past 12 games with a lower-body injury, is third on the NHL's all-time list with 1,733 games played. Gordie Howe is the all-time leader with 1,767 and Mark Messier (1,756) is second.
The Flames are 1-2-1 in their past four games and 3-4-2 in their past nine, and have scored two goals or fewer in seven of their past nine games.
The Kings, who seek their third straight win, are 12-3-2 in their past 17 games and trail the Vegas Golden Knights by three points for first place in the Pacific Division.