Each time i fly redeye from LAX - FLL or FLL - LAX it seems that my flight is always a codeshare with Korean Air/KLM/Air France etc...

With my Silver status, i always end up around 20th in line for a status upgrade.

I do pretty well on upgrades when it's not a codeshare. Is there any way to determine which flights will have codeshares or not before i buy the ticket?

Delta.com gives some information, but not as much as i'm looking for...