I can’t find a good answer to this. Since my bronch diagnosis I have limited trips away to Europe, and I use nasal salt spray and salt inhaler when I fly to try and prevent infection. However, I really want one big trip to Namibia for my70 th. It’s an 11 hour flight. I am fit, not on any drugs, except antibiotics when I have infections, though lots of gut problems. How do those of you with this find flying? I know it’s the equivalent of being at 2400 metres. What about the heat? Should I avoid the hottest times of year?