When you purchase your flight on HK Express website, you can add extras including seat options, food and drinks, baggage and U-First during your booking and pay the total fare with "Miles Plus Cash". However, please note that extras cannot be paid with Asia Miles separately through "Manage My Booking" after the flight booking is made.
Please note extras are not applicable for Full Miles Redemption. The payment of any extras (if applicable), including but not limited to baggage fees, meals, advance seat reservation fees and insurance charges shall be settled by any form of payment available on HK Express website.