Can I apply a promo code when paying with KrisFlyer miles? September 29, 2021 13:16 Updated Yes, you may apply a promo code when paying with KrisFlyer miles as long as the promo code is valid. Related articles How many KrisFlyer miles do I need for my booking? I am unable to redeem KrisFlyer miles for my booking. What payment methods can I use? I want to be a Provider on Pelago How do I cancel or change my booking?