.....Bellingcat : "Additionally, Fontanka noted that Petrov and Boshirov bought two separate return flights back to Moscow on March 4"
— Elena Evdokimova (@elenaevdokimov7) September 15, 2018
Well,Anatoly Shariy internal sources stated that they bought tickets only for one return trip,places 22a & 22c, and he is cheking his facts carefully