Originally Posted by
intuition
It is an interesting take.
There is such a strong pattern it can easily be taken advantage of. A HEL based flyer with lots of time on his hands could easily pinpoint the days with a major delay. If he can know early enough to score a ticket on AY99 that day, he will then have a higly subsidised (even free) flying.
Last minute ticket HEL-HKG under 600€ is almost impossible, And added with stupid Sat/Sun rules and accommodation in HKG, I guess playing EuroJackpot is more useful than AY EU261 tricks to HKG.