Originally Posted by
flyingcrooked
Does anyone know the difference between BLTFFKLT and BLTFFTLT? My ex-UK latitude flights always seem to be the former for all segments, but I have one now where I am trying to change the inbound and can't use AC's system to do it and the pricing is screwed up when I try to do it through the agent (as described upthread). I understand from a previous AC agent this is a problem that sometimes happens with ex-Europe latitude fares. In trying to figure it out I noticed that, unlike my other latitude return bookings, the problematic inbound segment has the fare basis code BLTFFTLT (but the outbound was still BLTFFKLT). Anyone know what the difference is?
The previous set of these fares were dual-inventory fares that booked into B but required inventory in a lower booking class as well. BLTFFKLT likely required K and BLTFFTLT likely required T. The new versions of these fares are single inventory booking directly into the lower RBD (i.e. K and T directly). All of these fares are fare-by-rule based on another lower fare with an upcharge applied. When changing these after departure, it will use fares in effect at time of ticketing, but since they are dual inventory fares, you need the same lower fare class available to keep the same fare (notwithstanding other things such as day of week etc). So an ad-col may be because you need to move to a higher fare.