Lan Peru's GRU-LIM and vice versa flights i don't think have ever been loaded onto the system. Are definitely valid as i'm ticketed to fly them in the next few months.

Also QF's SFO-YVR segment of their SYD-SFO-YVR service, seasonal i know, but i guess it's still a valid flight nonetheless.

Oh and BA's LGW-KEF service is not there.

Would it be worth adding JNB-MRU given the segment is now in the timetables?

Forgive me for what maybe an ignorant comment, but would it feasible to enable a 'seasonal' message next to flights when validating the routing?