Do Delta miles expire?

No — Delta SkyMiles don't expire, with no inactivity clock at all. Here's the catch worth knowing, and why a balance that never lapses can still be quietly wasted.

2 min read · Facts checked September 2026

Short answer

No. Delta SkyMiles do not expire and there is no inactivity clock — Delta's own program rules state miles never expire. The catch is value rather than time: SkyMiles are priced dynamically against cash fares, so a balance held for years quietly buys less as fares and award prices rise.

Key takeaways
  1. SkyMiles never expire, and there is no inactivity deadline.
  2. You don't need a flight, a purchase or any activity to hold them. The travel credits, certificates and status benefits you earn alongside them are different: those carry their own deadlines.
  3. Pull up any Delta credits or certificates you hold and write down their dates.
Never forgotten

No expiry. Still spend them.

Miles that never expire are the easiest to forget — and a forgotten balance is a wasted one. Nanvero keeps your SkyMiles in view next to your other programs, including the ones that do expire, so the miles that never lapse still turn into a trip and the ones with a deadline never catch you out.

SkyMiles balance tracked automatically
Sat next to programs that do expire, so nothing slips
No password, no logging in as you

Your balances all in one view

Delta SkyMiles
72,000 mi · no expiry
Safe ✓
Hilton Honors
40,000 pts · inactive
24 days
never expires · still worth spending
On this page
  1. No clock, and no award chart either
  2. The programs that still run an inactivity clock
  3. Spend SkyMiles before their value drifts

No clock, and no award chart either

No — Delta SkyMiles do not expire. There is no expiration date and no inactivity deadline, so the miles stay in your account, for as long as that account is open and in good standing, until you choose to spend them. The catch isn't expiry: SkyMiles have no published award chart, so their value can drift, and travel credits or certificates you earn alongside them carry their own deadlines. A balance that never lapses can still lose value — and be forgotten entirely.

The programs that still run an inactivity clock

The windows are not the same across programs, and several of the biggest have no window at all. Where a rule below differs from the one you remember, it is because the program changed it: Hilton doubled its window, and Alaska, Southwest and United each dropped theirs outright.

Inactivity windows by program, from each program’s published terms.
ProgramExpires afterExceptions
Avios36 months of inactivity
Amex Membership RewardsNeverpoints are forfeited if you close your last Membership Rewards-earning Card, or for an unpaid billing period
American AAdvantage24 months of inactivityAAdvantage credit-card holders and members under 21
Delta SkyMilesNever
United MileagePlusNever
Southwest Rapid RewardsNeverpoints are only lost if you close your Rapid Rewards account
Alaska Atmos RewardsNever
Marriott Bonvoy24 months of inactivity
Hilton Honors24 months of inactivity
World of Hyatt24 months of inactivity
IHG One Rewards12 months of inactivityIHG Elite members, and IHG One Rewards Premier cardholders (who hold Platinum Elite)
Chase Ultimate RewardsNeverpoints are forfeited if you close the Chase card they sit in
Nectar12 months of inactivity

Spend SkyMiles before their value drifts

Miles that never expire are the easiest to forget — and a forgotten balance is a wasted one. Nanvero keeps your SkyMiles in view next to your other programs, including the ones that do expire, so the miles that never lapse still turn into a trip and the ones with a deadline never catch you out.

  • SkyMiles balance tracked automatically
  • Sat next to programs that do expire, so nothing slips
  • No password, no logging in as you

Delta miles expiry — common questions

No. Delta SkyMiles do not expire — there is no expiration date and no inactivity deadline, so miles you earn stay in your account until you spend them, however long that takes.

Sources & method

Every window on this page is read from the program’s own published terms, or from a source that quotes them, and recorded in one file with the date it was checked — so a figure here and a figure anywhere else on Nanvero are the same figure. Where a program has changed its rule the old value is not quietly overwritten, as with Hilton’s move from twelve months to twenty-four. The whole expiry cluster works from the same table.

Where these numbers come from: Delta miles do not expire (SkyMiles Program Rules) (September 2026). Programs change these rules, so we re-check them and date what we find. Confirm against your own account before relying on a deadline.

Miles that last, finally used.

Nanvero keeps your SkyMiles in view alongside every other balance — including the ones that do expire — so none go to waste. Free to track up to five programs.

Track Delta automatically with Nanvero

No loyalty passwords, everFree for up to 5 programs, no cardCancel anytime