the DND-AMS route generated 13967 passengers over 226 flights (17628 seats) during the five full months of operation which, if my maths serves me correctly, equates to a 79% average load factor
I'm assuming that the flights came back as well which would mean that the LF is a fairly unimpressive 39.6% LF unless the 226 is one-way sectors? Would at least explain Flybe's behaviour.