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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 United miles expire?
No. United MileagePlus miles do not expire; United dropped its 18-month inactivity rule in August 2019 and has not reinstated it. A balance survives an idle account indefinitely. What it does not survive is devaluation — United prices awards dynamically, so miles held for years tend to buy less.
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 Amex points expire?
No. American Express states Membership Rewards points have no expiration date, and there is no inactivity rule. They are forfeited in two situations: closing your last Membership Rewards-earning Card loses unredeemed points immediately, and points can also be forfeited for an unpaid billing period.
GuideAmex to Avios
American Express Membership Rewards points transfer to Avios at 1:1, so 10,000 points become 10,000 Avios. Transfers are usually instant once your Avios account is linked, though Amex asks you to allow up to 72 hours. Periodic transfer bonuses of roughly 15 to 30 per cent are the easiest way to boost the rate.
ToolWhat can my points do?
Add your Amex Membership Rewards to your Avios, since they transfer to British Airways at 1:1, and compare the total with off-peak reward prices. A New York–London economy return is 55,000 Avios and business 176,000. The tool sorts trips into within reach now, one transfer away and not yet in reach.
ToolWhat can my Virgin Points do?
Virgin Points book partner flights on fixed charts: Delta One between New York and London is 47,500 points one-way off-peak, Delta flights within the US start at 7,500, and ANA business from Los Angeles to Tokyo is 52,500. Amex, Chase, Bilt and Citi points transfer in at 1:1, and the tool sorts trips by what your balance reaches.
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.
GuideAmex transfer partners
US American Express Membership Rewards points transfer to 16 airlines and 4 hotel programs. Most airlines, including Delta, British Airways, Air Canada Aeroplan and Flying Blue, are 1:1; Cathay Pacific, Emirates and JetBlue are 5:4, Aeromexico 1:1.6 and Hilton 1:2. UK Membership Rewards has its own list, with Emirates at 2:1 and Marriott at 2:3.
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.
GuideHow to earn United miles
Since April 2026, United pays by fare, status and whether you hold a United credit card: general members earn 3 miles per $1 without one and 6 with one, rising to 9 and 12 for Premier 1K. Basic Economy earns less, and nothing for general members without a card. Chase points transfer in at 1:1.
ToolWhat are Southwest points worth?
A Southwest Rapid Rewards point is worth about 1.25 cents, so 50,000 points come to roughly $625. Because Southwest prices awards against the cash fare, the value barely moves — about 1.1 cents on cheap fares and 1.4 on higher ones. The calculator converts any Southwest balance into dollars, pounds and euros at all three rates.
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