This probably needs to go in :-

https://www.flyertalk.com/forum/othe...-airlines-469/

However, just because other flights were departing doesn't mean there weren't issues over Western Europe. If it's the day I recall, there was a line of thunderstorms from around London all the way to around Prague! The other flights taking off may have been going to Northern Europe or other parts of the UK (which had no weather issues).