One of the closest airline-hotel loyalty pairings in the US is over. American Airlines and World of Hyatt confirmed on September 9 that their 'enhanced partnership', running since 2019, has formally ended. Hyatt didn't stay single for long — the very same day, it announced a new deep alliance with Delta SkyMiles that brings back the perks American had been quietly stripping away.

The old American-Hyatt deal was built around double dipping: members earned one mile or point per dollar spent with the other company, so a Hyatt stay generated AAdvantage miles and a flight earned Hyatt points. There were also reciprocal elite status fast-tracks and cross-program milestone rewards. But the earnings perk died in 2025, and the remaining benefits were a shadow of the original. By the time the formal split arrived, most loyal customers on either side won't feel much change.

The Delta arrangement, by contrast, looks a lot like the American deal in its prime. Delta Medallion members will earn miles on qualifying Hyatt bookings and receive World of Hyatt benefits, while Hyatt elites earn points on Delta tickets plus SkyMiles perks — with both brands publicly touting the 'Dual Earn' feature. Neither company has detailed everything the partnership will eventually include, but they've signalled plans to deepen it further. The obvious comparison is United and Marriott's long-standing Rewards Plus tie-up, which offers reciprocal elite status and better transfer ratios and remains the closest thing to this kind of agreement in the US market.

There's a wind-down timetable worth noting. AAdvantage members with a linked Hyatt account can keep collecting World of Hyatt rewards until February 28, 2027, and Hyatt elites can earn AAdvantage rewards until December 31, 2026 — in both cases, provided accounts are linked by November 15, 2026. After that, Hyatt becomes just another hotel partner for American, alongside Marriott and IHG, with a standard 500 miles per stay rather than Hyatt points. Point conversions also get less generous: 5,000 Hyatt points will convert to 2,000 AAdvantage miles, compared with the same 2,000 miles costing 10,000 IHG points or a steep 30,000 Marriott points.

For travellers, the practical takeaway is straightforward. If you habitually stack Hyatt stays with flights, Delta is now the airline that rewards that habit — and if you've been splitting loyalty between American and Hyatt, it may be time to link those accounts before the November 2026 deadline to milk the remaining benefits. American, meanwhile, has been working hard to reposition itself as a premium rival to Delta and United, and losing its flagship hotel partnership sits awkwardly with that ambition. Watch for the airline courting another hotel brand in the not-too-distant future.

Why did Hyatt switch? Nobody outside the boardroom knows for sure. Both airlines would have submitted competing proposals covering cost, product and collaboration, and Delta's was evidently richer. American had already pared the partnership back; Delta was willing to pay full price to take its place.

Story via Simple Flying.