What is the 24 hour rule****?
KLM 24-hour rule enabling passengers to make changes to their bookings or cancel their flights by phone at +1-844-838-4902 within 24 hours of purchase without incurring any penalties or fees. To take advantage of this courtesy service, passengers can contact****\'S customer service at +1-844-838-4902 available 24/7 to assist with any booking modifications or cancellations.