Originally Posted by
eternaltransit
In general you find that:
Flex Plus: (first) F (business) J (economy) Y, E, R
Flex: (first) A (business) C, I (economy) W, M, B, U
Saver: (business) O (economy) Q, L, T
Special: (economy) (L,T) V, X (business) O
Bolding mine.
What's the routing? It really comes down do that (for example ex DXB to India, X is a Saver, for most other routings X is a special)