You can't really tell on domestic F just by the fare basis code (the only thing you really know is that it's a First Class fare due to the second to last character being an F). If you look in the Routing info for the fare on EF, it shows you the booking class. Looking at the various F fares, this seems to be consistent.
K/L/T basis = P (e.g. KAA2AQFN)
S/W/V basis = Z (e.g. WAA2KKFN)
Q/H/U basis = D (e.g. QAA2AFFN)
E/M/B/Y basis = C (e.g. EAA0AFFN)
Last edited by xliioper; Jun 6, 2019 at 9:56 pm