Originally Posted by
m3red
You can upgrade a booking class but you will pay a change fee and the fare difference.
I thought there was no difference in the miles needed for an upgrade between flex and flex plus the only difference being no change fee on a flex plus.
You're forgiven for not being familiar with Economy
Flex Plus is cheaper to upgrade than Flex Y.
OP: you can easily do this, people do it all the time - if the outbound has been flown EK can do it for you at a ticket office, or you can call your TA. You'll have to pay a change fee (ex-LGW it's probably 75 GBP) as well as the fare difference to the next available Flex Plus bucket. You would have to upgrade both sectors as EK generally won't split the inbound into two separate flights.