ORD-CDG
Originally booked ORD-CDG on a W fare RT for $1300.
Upgraded to PN using a GPU at booking.
OLCI offered upgrade to GF for $599.
Accepted. I'm tall and would love the extra room to sleep on the overnight to Paris.
Now booked into ON, I assume I only get the original booked class for PQD and PQM or do they credit the Buy up?