Flying Blue is the joint loyalty program for Air France and KLM, and one of the most rewarding programs for flexible points transfers. All five major U.S. flexible currency programs transfer 1:1. The headline feature: monthly Promo Awards that drop 25–50% off selected routes — including Delta flights — published the first week of every month. Flying Blue also partners with Delta, giving SkyTeam coverage across Atlanta, Minneapolis, Detroit, and Salt Lake City hubs.
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Earns 4× on dining & U.S. groceries. Amex MR transfers 1:1 to Flying Blue. $250/yr with $240 in annual credits.