From what I can see in the Summer scheduules, KLM operate AMS-SXM only 3times per week (Tue, Fri, Sun). The Tue and Sun flights depart AMS at 0820thus there are no same day connections available from any UK departure points. Those, however, are B747 flights. The only MD-11 operation is the Friday rotation which departs 1100. Connections from the UK would be possible and may well be offred if you specify a fixed Friday date.
Having just tried it, indeed their reservation engine does not offer an AMS connection on the Friday flight although clearly it is possible. May I suggest you contact KLM reservations and ask them if this is an error? I use KLM quite often and have in the past had to bring anomalies to their attention. One, which they clearly knew about, took them months to fix. In the meantime the only option was to make the reservation by telephone.
Charges will be waved if it is proven that said reservation cannot be made on line because of a technical glitch on their side.
Last edited by Hotel Tango; 2nd Sep 2011 at 09:43.