Can I use Asia Miles to book a flight ticket for anyone other than myself?

Yes, you may book a ticket for anyone when using “Miles Plus Cash” as payment option. If you are redeeming ticket with full miles, you can redeem ticket for yourself and your redemption group nominee.

More about redeeming HK Express flights

How do I pay for HK Express flights with my Asia Miles?
How many miles are required for HK Express flights?
Can I use Asia Miles to pay for HK Express promo fares?
Can I use Asia Miles to book a HK Express flight ticket for an infant or a child?
Can I use Asia Miles to pay for HK Express extras?
Why can’t I find the ‘Miles Plus Cash’ option on HK Express’ payment page?
Can I choose a mix of Miles and cash to redeem my flight?
Can I use Asia Miles to settle any tax and surcharge?
Can I rebook or refund my booking?
Can I earn Asia Miles for HK Express flight bookings?
I cannot successfully book a flight with Asia Miles on HK Express website. Who should I contact?