Do Premium Economy passengers pay 120-160 % the standard Economy tickets? Or is it different?
As always, it depends on the time and destination, not to mention the phases of the moon
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On VS ex-LHR to JNB I usually find that the PE is about double the cheapest Y. For this you get the bigger and wider seat with increased pitch. Two seats rather than three across (or 3 rather than 4). You get the same food and service as Y but a separate check-in. The fare CAN be fully flexible, dependent on price. Various FFM bonus. For all intents and purposes, the BA product is identical.
Is it worth the extra? To me? Yes. As I have understood the economics of airlines, it is the F + C + cargo that provide the main revenue and Y are there to nuture people into choosing the carrier for biz and when they can afford the premium cabins. I sit (in my comfortable German designed home office chair) to be corrected.
The only uncomfortable aspect is that my cat is sleeping in my lap and I have to stretch around her to reach the keyboard.
This is because she insists on having a free ride.
OK, OK, I'll stop now.