Bus ticket Offers on Yatra promo code. Avail 100% eCash on your bus bookings made through desktop or App (Android or iOS). There is no restriction on travel dates. The Yatra promo code offer is valid for online bus bookings made through Yatra only. Yatra promo code Only 5% of your booking amount can be redeemed via the eCash earned from previous bookings on flights and 10% each on bus and train bookings.