Status: checked against official sources; automated independent review
Part of Cathay / Asia Miles hub
GUIDE
How to use Asia Miles upgrade awards on Cathay Pacific
Asia Miles is the mileage currency of the Cathay membership programme run by Cathay Pacific Airways, earned on Cathay flights and with more than 800 travel and lifestyle partners, and covered by Cathay's own earning and spending pages. [1] The balance works on an activity-based rule: a member who earns or redeems at least once every 18 months keeps the miles live, and each such transaction pushes the expiry date out by another 18 months. [4]
Facts checked: 18 October 2026
Key takeaways
- Asia Miles are earned with Cathay Pacific and with more than 800 travel and lifestyle partners. [1]
- Since 1 January 2020 (time in the Hong Kong Special Administrative Region of China) the programme has run an activity-based expiry system rather than a time-based one. [4]
- A member keeps miles active by earning or redeeming at least once every 18 months, and the expiry date moves forward 18 months from the last crediting or debiting date. [4]
- Miles credited on or before 31 December 2019 stay on the former arrangement, in which newly earned miles expired three years after being credited. [4]
How long does an Asia Miles balance stay usable?
Under the activity-based system that applies from 1 January 2020 (time in the Hong Kong Special Administrative Region of China), miles remain active so long as the member earns or redeems miles at least once in every 18-month window. [4] The expiry date is then extended automatically by 18 months, counted from the most recent crediting or debiting of miles on the account. [4]
That is a different design from a fixed lifetime for each batch of miles: the status of the balance depends on what the member does with the account, not only on when the miles were earned. [4] Cathay describes the shift as a move away from miles expiring three years after they were credited. [4]
What does the 18-month clock actually measure?
The measurement point is the account, not the trip. Cathay says the expiry date is extended by 18 months from the last miles crediting or debiting date, rather than from the activity or transaction date. [4] In practice that means the date the miles land in, or leave, the account is the one that counts for the extension. [4]
Both directions of movement are described in the rule: the member earns or redeems miles at least once every 18 months. [4] A redemption therefore sits inside the same 18-month test as a flight or a partner purchase. [4]
Which miles follow the older three-year rule?
The newer rule is not retrospective. All miles credited on or before 31 December 2019 continue to follow the former miles expiry arrangement, while miles earned from 1 January 2020 onwards fall under the activity-based system. [4] An account that has been running since before the change can therefore hold two groups of miles with different timetables. [4]
Exceptions and limits
- Date basis. The 18 months run from the crediting or debiting date of the miles, not from the date of the underlying activity or transaction. [4]
- Miles already credited before 2020. Miles credited on or before 31 December 2019 are not moved onto the activity-based system; they keep the former arrangement. [4]
- Programme scope. The rules described here are those of the Cathay membership programme and its Asia Miles currency. [1] [4]
- Ticket scope. This page addresses Cathay Pacific-issued tickets. Upgrades on tickets issued by other airlines, including oneworld alliance carriers, are outside its scope.
Frequently asked questions
Do Asia Miles expire if I stop flying Cathay Pacific?
Not on inactivity alone. From 1 January 2020 (time in the Hong Kong Special Administrative Region of China) the programme uses an activity-based system: earning or redeeming miles at least once every 18 months keeps the balance active and extends the expiry date by 18 months. [4]
What counts towards keeping my miles active?
The rule is written in terms of earning or redeeming miles at least once every 18 months, so activity on the miles balance itself is what the test looks at. [4] Miles can be earned with Cathay and with more than 800 travel and lifestyle partners. [1]
Do miles earned before 2020 follow the same 18-month rule?
No. Miles credited on or before 31 December 2019 keep the former arrangement, under which newly earned miles expired three years after being credited. [4]
Is the 18-month clock counted from my flight date?
No. Cathay extends the expiry date 18 months from the last miles crediting or debiting date, not from the activity or transaction date. [4]
Sources
Sources checked on 18 October 2026. Other programmes, including oneworld alliance partner schemes, are not covered here; see the glossary for related terms.
- Cathay Pacific, How to earn Asia Miles, checked 18 October 2026
- Cathay Pacific, What is the new change on the expiry rule of Asia Miles?, checked 18 October 2026