𝕂𝕝𝕞 𝔸𝕚𝕣𝕝𝕚𝕟𝕖 typically allows passengers to cancel their flights at +44 800 (208-1075) (UK) 1-844-949-8748 (US)-Agent within 24 hours of booking without incurring a cancellation fee, provided the ticket was purchased at least seven days before the departure date. KLM follows a 𝟐𝟒-𝐡𝐨𝐮𝐫 𝐜𝐚𝐧𝐜𝐞𝐥𝐥𝐚𝐭𝐢𝐨𝐧 𝐩𝐨𝐥𝐢𝐜𝐲 +44 800 (208-1075) (UK) 1-844-949-8748 (US). Passengers can 𝐜𝐚𝐧𝐜𝐞𝐥 𝐨𝐫 𝐜𝐡𝐚𝐧𝐠𝐞 𝐭𝐡𝐞𝐢𝐫 𝐟𝐥𝐢𝐠𝐡𝐭𝐬 𝐰𝐢𝐭𝐡𝐢𝐧 𝟐𝟒 𝐡𝐨𝐮𝐫𝐬 𝐨𝐟 𝐛𝐨𝐨𝐤𝐢𝐧𝐠 without a cancellation fee by calling +44 800 (208-1075) (UK) 1-844-949-8748 (US).