Originally Posted by
Nick Art
F doesn't sell a lot on ZRH-YUL so chances are there are seats to upgrade to. Afaik in April the flights are still operated by A330s from LX so F should be available.
Price wise I'd expect around 1000 USD.
Try if LX offers you the upgrade price for your booking in-app already.
Good luck!
I've seen 1500 CAD for YUL-ZRH but 1000 USD for ZRH-YUL is a little optmistic. I would love to be proven wrong though!