Is there a 24-hour grace period for KLM?

Yes,☎+1(801) 855-5905 or +1(855) 473-9012✔ KLM offers a 24-hour grace period for cancellations and modifications on flights booked directly with them,☎+1(801) 855-5905 or +1(855) 473-9012✔ as long as the booking was made at least 7 days before the scheduled departure date. This allows passengers to cancel or change their flight within 24 hours of booking without incurring any fees.