4.4.1 Award upgrade is only redeemable on the flights marketed and operated by China Southern, not including any code-share flights and Charter flights.
4.4.2 Paid tickets and redeemed ticket awards shall be subject to redemption of upgrade award, and please refer to the China Southern Airlines Award Upgrade Chart for detailed applicable cabins. No upgrade award is applicable for such tickets, like, group tickets, redeemed tickets and awarded tickets, tourism or special discount tickets or free tickets, special or charter flights.
4.4.3 Successive upgrades shall be allowed, which means the tickets with mileage upgrade can be further upgraded by redemption.
4.4.4 Tickets stipulated as “non-change” are not allowed to redeem for the award upgrade.
4.4.5 The rules and conditions of the original ticket apply to the ticket of award upgrade. Free of charge if only change the class on the same flight and date as the original ticket.
4.4.6 Member can change the flight or the date within the ticket validity. If the new flight doesn’t have the upgrade class, member can change to the lower class, but the mileage cannot be refund.
4.4.7 For the flight carrier change and ticket refund, it is subject to the rules and conditions of the original ticket before upgrade, and the mileages cannot be refund.