1/844-488-0875KLM Cancellation Policy Made Simple: Instant Refund and Support https://lacdmhowr.powerappsportals.us/forums/support-forum/b32dca92-c3ac-ef11-b542-001dd8097a1a KLM Airlines allows passengers to cancel flights within 24 hours of booking for a full refund [+????-????????????-????????????-????????????????] (USA) or [(+44) 8???????? 208 1????75] (UK), regardless of fare type, as long as the booking was made at least 24 hours before departure. For assistance with cancellations or refunds, call [+????-????????????-????????????-????????????????] (USA) or [(+44) 8???????? 208 1????75] (UK).