As with most issues involving air travel, what happens if you miss a  flight depends on your specific situation. If the missed flight is the airline’s fault (a delayed initial flight due to mechanical problems, for example), the airline should rebook you on the next available flight.familiarize yourself KLM Missed Flight Policy to avoid any extra charges,
For further assistance regarding KLM Missed Flight , visit Airways Manage Booking website or call KLM Customer Service 1 (800) 618-0104 or 1-888-838-0309  (OTA-Skip Waiting).