Originally Posted by
Xyzzy
Y, B, M, E, U, H, Q, V, W
Minor note for the OP to double check - make sure "specific fare classes" is checked.
The website has faked me out when I've put in specific fare classes but it does not auto-select that category radio button, and still does a lowest fare search. The fact that K fares are still showing up made me wonder if this is happening to OP.