10 hours ago, swissie said:

In my case it would be BKK to ZRH. Normally flying over Iran (just south of Teheran).

That is a different matter of course. Zürich my h further south than London.

Yesterday terrible delay from departure on for whatever reason. No way that a slight detour makes a two hour delay.

Detour if yesterday is not a big deal

10 hours ago, swissie said:

In my case it would be BKK to ZRH. Normally flying over Iran (just south of Teheran).

TG970, same story...

2 hours ago, KhunBENQ said:

That is a different matter of course. Zürich my h further south than London.

Yesterday terrible delay from departure on for whatever reason. No way that a slight detour makes a two hour delay.

Yes. BKK to either LHR or ZRH is fundamentally the same as far as routings near west Asia go.

14 hours ago, swissie said:

In my case it would be BKK to ZRH. Normally flying over Iran (just south of Teheran).

Looks like the ZRH route is also diverting.