KLM live chat 1-800-364-9405 option is the best option to get in touch with the customer support department of KLM. It is a contact option that is available 24x7 to help the passengers. If you are looking for other options then you can call the KLM helpline number 1-800-364-9405 or write an email to the KLM customer support team. Contact KLM Live Person 1-800-364-9405 anytime and resolve all your queries related to booking or cancellation, change of KLM flight.