Originally Posted by
asinghal
As an op up? Or upgrade using miles
For this trip I bought Y Flex Plus using skywards redemption and then upgraded using miles to J (cheaper than buying J using miles). All done online. I called for some changes and the agent helped me with some potential changes as well.
It does say I cannot pay for an upgrade using money.
As an opup definitely not. Using miles not by the rule book but YMMV at the airport or onboard.