An object is to provide a liquid ejection apparatus that allows suppression of a fluctuation in a pressure of a liquid in a flow path caused by a liquid delivery unit, enabling the liquid to be stably ejected through an ejection port. The liquid ejection apparatus including a liquid ejection head having an ejection port through which a liquid is ejected, a flow path configured to communicate with the ejection port, and a liquid delivery unit configured to feed the liquid to the flow path. A relation between an angular frequency ω of the liquid delivered from the liquid delivery unit, a coefficient of kinematic viscosity ν of the liquid, and an equal diameter a of at least a part of a section of an extra-head flow path in a direction normal to a direction in which ink flows satisfies √(ω/2ν)×a>1.