I was on delayed Flybe flight from AMS to BHX yesterday evening. I was checking the plane all day and it was fine on the BHX-BHD-BHX leg but pilot said they then couldn't get into AMS and so had to sit at BHX and wait. We were only an hour and an half late in the end which wasn't too bad given it had to the EMA leg first. Virtually all flights into Schipol were showing as delayed yesterday.
The queues were fine at Schipol when we got there but I think that was due to the time of day. I saw horror stories on Twitter when we were on our train from Berlin about people queuing for hours in the morning