Originally Posted by
mdarling929
Does TK ever offer cash upgrade deals at check-in or will it just be the current price difference?
they do offer cash upgrades online and at the airport. for short hops IST-Europe it#s usually between 250 and 320€, longhaul can be between 500$ and 1500$. You should see the cash upgrade offer in manage your booking around 2 days prior to departure.