Frequent Flyer Mile Expiry Rules — Indian Airlines Compared 2026
By Rohit Sinha (Rohit Sinha covers airline loyalty programmes and credit-card rewards for Indian travellers — frequent-flyer tiers, points transfers, lounge access and how to actually redeem miles for real value.) · Published · 7 min read
Frequent flyer mile expiry policies differ significantly between airlines — some expire miles after a fixed period of complete account inactivity (any qualifying activity resets the clock), others use a rolling expiry tied to when each batch of miles was specifically earned. Rules change periodically, so verify your specific programme's current policy directly rather than relying on older information.
Two Broad Expiry Models
Inactivity-based expiry means miles remain valid indefinitely as long as the account shows some qualifying activity (a flight, a points-earning credit card transaction, sometimes a simple account login) within a defined period — any such activity resets the expiry clock for the entire account balance. Rolling or batch expiry instead expires each specific batch of miles a set period after it was individually earned, regardless of other account activity.
Why This Distinction Genuinely Matters
Under an inactivity-based system, a single qualifying transaction can preserve years of accumulated miles indefinitely, making the programme considerably more forgiving for infrequent flyers. Under a rolling/batch system, miles earned years ago can expire even if you've remained an active member overall, since each batch is tracked and expires independently — a meaningfully less forgiving structure for irregular travellers.
Why You Should Never Assume Based on Memory
Airlines periodically change their mileage expiry policies, sometimes shifting from one model to the other entirely, or adjusting the specific time period — a policy you remember from a few years ago may no longer be accurate. Always check the current, specific policy on your airline's official loyalty programme page rather than relying on past knowledge or general assumptions about how frequent flyer programmes typically work.
Practical Steps to Avoid Losing Miles
Set a personal reminder to check your loyalty account's current balance and expiry policy periodically, and if a simple qualifying activity (even a small points-earning purchase) can reset an inactivity-based clock, doing this occasionally is a low-effort way to preserve accumulated miles you'd otherwise lose to inactivity.
Redeeming Rather Than Losing Miles
If miles are approaching expiry under a rolling system specifically, using them for even a modest redemption (rather than losing them entirely) is generally better value than letting them lapse — check current redemption options well before an expiry deadline rather than discovering the deadline has already passed. Broader loyalty-programme industry standards are set out by bodies like IATA. Search FlightGPT to compare cash fares against the value of redeeming expiring miles.
Frequently asked questions
What are the two main types of frequent flyer mile expiry?
Inactivity-based expiry, where miles stay valid as long as the account shows qualifying activity within a defined period, and rolling or batch expiry, where each batch of miles expires a set period after it was individually earned, regardless of other activity.
Can one transaction save all my miles from expiring?
Under an inactivity-based system, yes — a single qualifying transaction resets the expiry clock for the entire account balance, making these programmes considerably more forgiving for infrequent flyers than rolling/batch systems.
Do airlines change their mileage expiry policies over time?
Yes, periodically — airlines sometimes shift from one expiry model to the other or adjust the specific time period, so a policy you remember from a few years ago may no longer be accurate. Always check the current policy.
How can I prevent my miles from expiring due to inactivity?
If your programme uses inactivity-based expiry, a small qualifying activity (even a modest points-earning purchase) periodically resets the clock — set a personal reminder to do this occasionally to preserve accumulated miles.
What should I do if my miles are about to expire under a rolling system?
Use them for even a modest redemption rather than letting them lapse entirely — check current redemption options well before the expiry deadline rather than discovering it has already passed.
Where can I check my airline's current mileage expiry policy?
The airline's official loyalty programme page, checked directly and currently, rather than relying on past knowledge or general assumptions about how frequent flyer programmes typically work.