Flew from Delhi to Dehradun by UK 617 of vistara airlines which took exactly one hour of flight time. My flight was scheduled at 1: 45 pm but due to bad weather conditions it flew around 3 Pm and landed at 4 pm.
Experience with them was really nice. Price was very reasonable, It cost me 1850rs after discount. The staff was very helpful and friendly. Checkin was smooth. Served free beverage during flight which was also good. Gave proper instructions before and during landing to avoid any kind of fear. It was overall a good experience with Vistara UK 617