Ok, I believe you and conceed that there may be an element of risk. I've been lucky until now as I really haven't had a problem
yet. Of course I'm certainly not doing this week in, week out. I can well believe that an obviously regular pattern could well flag up. I wasn't suggesting doing this on a regular basis either. As said, passengers miss flights for a variety of valid reasons and unless a definite pattern of intent is proven the airline would be wasting time and money pursuing the matter. In other words, on the very odd occasions that one is faced with forking out hundreds for a single, the "return" may be an option to consider. Not grinding any axe with you either btw