According to the previous validity rule, the miles are valid for two calendar years. If you fail to reach 20,000km for two calendar years, your miles in the first year should be reduced by half. By contrast, the new program gives a new longer validity of 36 months and an easier calculating method.

You can refer to the updated Membership Guide, www.csair.com, Member Express or the CZ ICON magazine, etc. or, call the sales service hotline of CZ for detailed information.

The period of validity for mileages is 36 months as from the month of entry (excluding mileages with specially designated period of validity), mileages during the period of validity which are not redeemed will be cleared upon expiry.  
Rules on the period of validity of China Southern Airlines SkyPearl mileages were upgraded in Jul 2015 as follows: 

1. For members with gold and silver cards, unused mileages as for their gold and silver card membership will be automatically extended in full amounts for 12 months upon expiry, the extended mileages will be further extended automatically upon expiry if not used and the members are still with gold card or silver card membership. Therefore, during the gold and silver card membership period of members with gold and silver cards, the mileages will never be overdue; however, if they degraded from gold card or silver card members into base card members, policies for the period of validity for base cards will be followed.

2. A base card member may register to participate in the “China Southern Airlines SkyPearl Mileage Extension Program” before the expiry of his or her mileages, and after the registration, he or she may pay 20% of his or her mileages in exchange of the period of validity for another 12 months (namely, the 80% will be extended by 12 months), while mileages already extended cannot be further extended. If you fail to register to participate in the “China Southern Airlines SkyPearl Mileage Extension Program” before the expiry, all unused mileages will be cleared upon expiry.   

The miles credited into account on or before March 31, 2010 is now valid through March 31, 2013 and the due miles which isn't used shall be automatically eliminated.

When the period of validity takes effect, you can go to Sky Pearl’s website (skypearl.csair.com) to check your personal mileage account or dial the sales and service hotline of China Southern Airlines 95539 for information. Besides, China Southern Airlines will add prompts on the period of validity of your mileages via notifications by means of member mileage notice or mileage receipt notice, etc. to facilitate you in arranging your mileage usage plan.  

The mileages will be deducted in order from the one with the earliest date of expiry.

For example, there are mileages A and B in a member’s account, with A valid till Mar 31, 2013 and B valid till Dec 31, 2013, A will be deducted before B upon redemption for awards.  

The award miles getting from some promotions will be applied designated validity period, for details please refer to the published terms and conditions of the promotion.

Under the new rules for period of validity of SkyPearl mileage, in case of a mileage refund transaction, 

• For voluntary refund: the period of validity for the refunded mileage will be the same to that of the mileage used for the redemption, and only mileages within the period of validity can be refunded. 

The handling fee for ticket refund should be deducted from the mileage with the date of expiry.

• For involuntary refund such as cancellation of the flight: the refunded mileage will be assigned another period of validity of 36 months on the basis of the date of refund.