KLM Change Seats online policy
Pessengers have the liberty to request KLM Change Seats online policy, at the time of check-in on the KLM app or through the airline booking portal. Here are some important points that you have to read before making a request to change seats- KLM allows you to pick regular seats at no charge during the online check-in.
https://airlinespolicy.com/flight-change-policy/klm-change-flight-policy/
