Originally Posted by SleepingDog
... I don't quite understand why they can't remove the Tango fare class from these routes altogether, but apparently they can't.
Don't listen to the naysayers on topics like this. It is not an IT issue, but it is a Marketing issue. Many people are programmed to go and look for Tango fares and they need to be offered.
It would be very simple to zero out allocations for Tango so that they are not offered at all.
Your experience of seeing T+ higher than Tango only occurs in those markets where where Tango sells out very quickly. All of the fare categories have multiple fare levels within them and there is some overlap between T, T+, and even Latitude.