KurumochRecent coverageRestrictions on flights for Kazan, Ulyanovsk and Samara airports have been lifted — ИнтерфаксTatarstan and Samara airports resume flight services — ИнтерфаксAirports in Tambov and Volga Region Limited — ИнтерфаксRosaviation Imposes Restrictions on Operations at Nine Airports — Ведомости