Originally Posted by
rog747
believe it or not BY was used on the bag tags and boarding cards back from my recent flight
have also seen BY used on FR24 as well on numerous occasions recently
dont ask me how but BY is around lol - maybe used on Posn'g flights?
thomas cook uses both TCX and MT (My Travel days) and also DE for Condor
They are just IATA codes - name change of airline doesn’t necessarily change this. The 3 letter code commonly used is TOM but if the airport for whatever reason can’t manage that in their systems they use the 2 letter BY IATA equivalent. Some airlines prefer the 2 letter code but where this applies it is more common across all airports (you see BE or LS more than their 3 letter equiv whereas with EasyJet you see EZY more than U2)
TCX/MT & BAW/BA & EZY/U2 & BEE/BE &
EXS/LS & VIR/VS