It is possible to change a flight that has already been booked with KLM. However, the process and cost of changing the flight will depend on the type of ticket you have purchased and the terms and conditions associated with it.

If you have purchased a flexible or refundable ticket, you may be able to change the flight for free or for a small fee. However, if you have purchased a non-refundable ticket, you may have to pay a fee to make changes to the flight, and the amount of the fee will depend on various factors such as the route, the time of the change, and the availability of alternative flights.

To change a KLM flight, you can visit the KLM website or contact the KLM customer service team by phone or email. If you choose to Klm change flights online, you will need to log in to your KLM account and navigate to the "Manage My Booking" section. From there, you can select the flight you wish to change and follow the prompts to select a new flight and pay any associated fees.

It is important to note that changing a flight can be a complex process, especially if there are multiple segments or connecting flights involved. Therefore, it is recommended to contact KLM customer service for assistance if you are unsure about how to proceed or if you have any questions or concerns. If you want to know more you can read the full blog.