Originally Posted by
CXFlyerBoy
Econ in theory has 3 times the same bucket ie S lite, essential and flex. The complexity is that all three bins must sell out in the same subclass before they move up to the next subclass
I don't think that's true - but maybe I have misinterpreted what you wrote.
If there is availability in the "S" bucket, it can be sold in any of the three "flavours" lite, essential and flex.
Once the "S" bucket is exhausted, the system will then only offer the next-cheapest economy bucket - which again can be sold in any of the three "flavours" lite, essential and flex.
It is not the case that they must sell a defined number of S lite AND a defined number of S essential AND a defined number of S flex tickets; there is ony one bucket for "S", and if there is availability in that bucket, each available "S" seat can be sold as any of lite, essential or flex.
For example, if a particular flight allows 22 seats to be sold in "S", then any of the following are possible:
22 "S" lite tickets
15 "S" lite tickets, 5 "S" essential tickets, 2 "S" flex tickets
...or any othe combination of the three "flavours" until the allocation of 22 "S" seats has been exhausted for that flight