Thanks for all the tips. As usual trying to decode the acronyms. Airport codes I can deal with-- not going to fly back from IST or Warsaw; Lisbon a possibility but would rather avoid TAP. Swissair through Zurich would be fine as would Lufthansa. What is "OS"?
The main thing it seems is to jump on this next May. Will do.
But I guess I shouldn't close my mind--LOT, Turkish,, TAP, do they have a decent business class? (Just hate the idea of flying all the way back to Istanbul or Warsaw to fly home. Want a quick trip, not a hugely long one.)