Originally Posted by
Traveloguy
I suspect FRA would not be allowed and SIN would be the preferred option as it is more direct (it's approx 1000 miles shorter).
Use the following website to help you calculate distances:
http://gc.kls2.com/
If the only available route (only flight) on that day is via longer route, then are you allowed to take that route?
Or, if the class you want is available but on the flight with a longer route, then is that acceptable?