KLM issued this statement on March 1, 2018:
Owing to a strong easterly wind, runway capacity at Schiphol is currently restricted. In addition, wintery conditions in the United Kingdom have caused airports to halt or restrict operations. As a result, various KLM flights have been delayed. At present, 39 European return flights have been cancelled as well. This number may increase during the course of the day. Passengers affected will be personally notified and rebooked onto other flights. Passengers are likely to be faced with delays for the remainder of the day. We advise our passengers to keep a close eye on KLM.com for the latest departure and arrival information.