If I recall events correctly Marseille ATC were on strike weekend 26/27 May.I struggled to get into a shorthaul flight on the 28th because flights to my (French) destination had been reduced and there was a bit of a recovery operation going on. I’m not sure if the ATCers kicked off again with action early the following weekend but I know the action (or even threat of it) has led to flights either being cancelled, combined, or subject to very long slot delays.
TBH it’s a slightly more credible explanation than snow in London on May 31.I’d be pretty upset if I was the CEO and one of my employees had seriously offered that as an excuse.....then again I’m not the CEO.....