Please note that upgrades on KLM documents, ticket numbers starting with 074, can be booked via KLM.com.
Please make sure to log out first with a KLM or Flying Blue account before you proceed with the booking of the upgrade.
Please note that it's only possible to buy an upgrade if your ticket allows for a change. Only the complete amount (fare difference + applicable penalty fees) can be paid with Blue Credits. It's not possible to combine Blue Credits with another form of payment to pay for the upgrade.
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