You can transfer points at a 1:1 ratio from partners like American Express Membership Rewards, Chase Ultimate Rewards, and Capital One.
Are you looking to your account for a specific trip, or are you checking for the latest bonus promotion ? Spending Flying Blue Miles on tickets and upgrades - KLM US klm buy miles
During the booking process on KLM.com, you can opt to pay for up to 25% of a regular ticket using miles if you don't have enough for a full award. You can transfer points at a 1:1 ratio