 Vistara was the first airline in India to introduce Premium Economy class in the domestic market . At present it offers 36 premium economy seats , six rows in 3 @-@ 3 configuration , out of total 148 seats in the single aisle Airbus A320 @-@ 200 aircraft in its fleet . Each being 18 inches ( 460 mm ) wide and having a pitch of 33 – 36 inches ( 840 – 910 mm ) . 
