A liquid ejecting apparatus includes a liquid ejecting head which ejects liquid from nozzles; a liquid supply path which includes a liquid chamber partly formed of a flexible member, and supplies liquid to the liquid ejecting head; and a flow path unit which includes a displacement detecting unit which detects a displacement of the flexible member, and the liquid chamber, in which the flexible member closes the liquid supply path by being displaced in a direction in which a volume of the liquid chamber is reduced due to a decrease in liquid in the liquid chamber.