I am searching for an award ticket on a IB-codeshared VY flight on FLR-BCN. Searching for airline code VY gives me:
I4 U4 Y4 N4 B4 E4 H4 K4 M4 L4 R4 V4 S4 XS ZS TS WS QS OS PS F4 C4 JS
but searching for IB gives me:
Y9 J9 C9 D9 R9 I9 W9 B9 H9 K9 M9 Z9 L9 A9 V9 S9 N9 Q9 O9 P0
As I remember, IB should be using X for award ticket, but how about VY? and why it is not showing X availability for IB?