Hi,

This is my first posting on Flyer Talk and could use some advice. I'm planning to travel to Turkey for my honeymoon this May on the Turkish Air non-stop from ORD or IST. I have a ton of miles on United and wanted to upgrade to Business Class. I called Turkish Airlines to see if there were upgrades available but they said that I had to:

1. Book in B or Y Class
2. Only after I had bought my ticket, would they be able to tell me if I could use miles to upgrade.

So I have a few questions:
1. When booking they had for fare options:
Economy Restricted
Economy Semi-flexable (+$550 per ticket)
Economy Fully-flexable (+$750 per ticket)
Business (+$4,000 per ticket)

They did not say which of these qualify for upgrades... can someone tell me which are B and Y

2. Anyone have an idea on how I can tell if I can upgrade with miles without purchasing the ticket in advance? The website is unclear whether or not I can refund without a change fee (even for the fully-flexable) although I assume you can.

If this doesn't workout, I was going to go another route... but would love to take the no-stop.

Any and all advice is appreciated.

Thanks,
AKM