Originally Posted by
Anonba
It isnt called a differential fare rather DIF short for dual inventory fare. They will book into E or T fare bucket in WTP but to get the further discount DIF specific fare buckets in WT also need to be available.
Agree, which I've heard of -though only with AA now i think of it. However the agent called it a 'differential fare' twice while I was chatting to her. Makes booking these quite annoying for someone that regularly changes dates.