MakeMyTrip Domestic Flight Offers & Promo Codes 2022 Use promo code SBIDF for an instant discount of INR 250 and MMTSBI for an instant discount of 10% (maximum discount INR 10000) on a minimum booking amount of INR 4000. Use your SBI credit card to make the payment and you'd get the discount anytime, anyday! 5. Cool Domestic Flight Offers for Axis Customers: