According to the article in Korean Newspaper,
( http://news.airportal.go.kr/newshome...(I)&regionkey= )
OZ does op-op when economy is full.

Priority is
OZ Platinum/Diamond -> *G -> OZ Gold -> *S.

Also, UA' priority order might be as follow;
UA GS/1K/1P -> *G -> UA 2P -> *S
( http://www.flyertalk.com/forum/showthread.php?t=328066 )

How about op-up of other * airlines ?

Wow, *G before OZ Gold! Crazy...

As you know, OZ Gold is *S...

Grr woops. Late, and I read OZ *Gold.

Update: UA SWUs in paper from for LH are not valid on X,I,R,N,E,S,W,ID, AD and IP Fares. Additionally not valid on intra europe flights on L and T fares.

Can you use a SWU to upgrade a LH purchased but UA operated flight?

Example: SFO-FRA-BHX where SFO-FRA is UA? Can I sponsor this online for a friend as well?

Thanks.

Does anyone have a link to the current thread on UA Mileage Upgrades on *A? I realize that it was suspended, but can't find the discussion.

No personal experience, but from what I have read, yes, you can use a UA SWU to upgrade a code share flight operated by UA. However, as I understand it, these are day of flight only upgrades, which sort of reduces one of the big benefits of SWU certs.

Is there any way to use UA or US miles to upgrade an Austrian (OS) ticket?

US Dividend Miles on UA , international
 

I read a lot , but, Can my US Dividend Miles be used to upgrade on a United international flight to Europe. How about if the flight is on LH metal?

If no , any suggestions where the Dividend miles would be welcome?

Can I use SWU on Z LH Fare?
 

I know UA does not allow Bus to First upgrade on Z, but does LH allow me to use (standby basis, of course) SWU to upgrade Z to F? LH metal, of course.

--edit: found the answer. Yes.

*A (BD) upgrades possible on Chinese Airline (FM, CA)?
 

Can i use my BD miles for upgrades on the two Chinese *A Airlines? I'm pretty sure answer is "no", just confirming here..

I'm afraid that BD miles cannot be used for upgrades on any airline (including BD):(

Any advice - Systemwide upgrade on S class ticket
 

Have several Systemwides due to expire at end of year, so booked flights to London over Thanksgiving. UAL came out with a Fall holiday sale, got a nice ticket (SFO <-> LHR nonstop for $750). Tried to use my systemwides, said not eligible.

Anyone have any advice?

My advice would be:

i) Buy an appropriate upgradeable fare class.
ii) Do not cross post (against the FT TOS).