Amex Launches 25% Transfer Bonus to Air France-KLM Flying Blue — Book Biz Class to Europe From 36k Amex Points

American Express is currently offering a 25% transfer bonus to Air France-KLM Flying Blue, letting you book some fantastic award flights for a little less. In fact, you can stack this transfer bonus with Promo Rewards to book a business class award to Europe from 36k Amex points! Here's what you need to know about this rare Amex-Flying Blue transfer bonus and some of the best ways to maximize it b