I have a friend stuck in Frankfurt on a diverted SQ flight, destination LHR. He's been there 36hrs already, and SQ has put him up in a 5* hotel so he's actually pretty lucky, though obviously anxious to get to UK.

I see there's availability on tomorrow morning's BA FRA-LCY nonstop, and it seems that LCY flights have been operating OK. Do you think he should contemplate booking himself onto that, or just sit it out and be patient, since at least he's being comfortably accommodated? And what would you consider the odds of the flight actually running, vs being cancelled at the last minute?