Originally Posted by
irishguy28
The individual letters have, of themselves, no real meaning. You can tell the basic features of such a flight from this letter, but not all the details.
The letter may have no "meaning", but there will be a set of conditions attached for KLM/air france. Ok..... if I must spell it out
What are the conditions for fare class J?
What are the conditions for fare class C?
What are the conditions for fare class D?
What are the conditions for fare class I?
What are the conditions for fare class Z?
What are the conditions for fare class Y?
...
...
Getting a bit tedius, but do I need to list every letter, or can we get the idea now?