Originally Posted by
fuyao
But E class is not BE with all airlines. Many airlines, incl. KL/AF/DL/LH Group/UA/... use the same fare classes for eco classic, light, flex and use fare families instead. As of right now, there is no way of excl. certain fare families / BE fares on ITA afaik
This is what I'm currently using to avoid BE:
f ~(ua,bc=N|aa,bc=B|dl,bc=E|am,bc=V|as,bc=X)