  The TeV extragalactic sky is dominated by blazars, radio-loud active galactic
nuclei with a relativistic jet pointing towards the Earth. Blazars show
variability that can be quite exceptional both in terms of flux (orders of
magnitude of brightening) and time (down to the minute timescale). This bright
flaring activity contains key information on the physics of particle
acceleration and photon production in the emitting region, as well as the
structure and physical properties of the jet itself. The TeV band is accessed
from the ground by Cherenkov telescopes that image the pair cascade triggered
by the interaction of the gamma ray with the Earth's atmosphere. The Cherenkov
Telescope Array (CTA) represents the upcoming generation of imaging atmospheric
Cherenkov telescopes, with a significantly higher sensitivity and larger energy
coverage with respect to current instruments. It will thus provide us with
unprecedented statistics on blazar light-curves and spectra. In this
contribution we present the results from realistic simulations of CTA
observations of bright blazar flares, taking as input state-of-the-art
numerical simulations of blazar emission models and including all relevant
observational constraints.
