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Do Delta miles expire?
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.
GuideDo Southwest points expire?
No. Southwest Rapid Rewards points do not expire while your account stays open — Southwest removed points expiration in 2022. The one thing that loses them is closing the account: Southwest's terms say points in a closed account are terminated, so leave it open even if you stop flying.
GuideDo Alaska miles expire?
No. Alaska dropped its 24-month inactivity rule in April 2023, and under the renamed Atmos Rewards program the terms state points have no expiration date and may remain in an account indefinitely. An idle Alaska balance is safe, so the only real risk to it is program devaluation.
GuideBilt transfer partners
Bilt Rewards has the widest transfer list of any US card currency: nineteen airlines and seven hotels, almost all at 1:1. It is the only program reaching American, Alaska, Southwest and United alongside all four major hotels, Hilton, IHG, Marriott and Hyatt. Only Accor (3:2) and Preferred Hotels (1:2) differ.
GuideHow to earn Delta miles
Delta SkyMiles members earn 5 miles per $1 on Delta fares, rising to 7, 8, 9 and 11 with Silver, Gold, Platinum and Diamond Medallion status; Basic Economy earns none. Partner-airline flights earn by distance and cabin, American Express points transfer in at 1:1 and Marriott points at 3:1, and dining, Uber and shopping add more.
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Nanvero tracks every balance you hold, warns you before points expire, and plans the flight you're earning toward. Free for up to five programs; the Playbook is part of Pro.
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