Originally Posted by xliioper

What is specific route and date? Not being able to get immediate comp upgrade to C+ as a Platinum is odd unless you happen to have more than 2 pax on the same reservation (which will disable comp upgrades to C+/FC). SFO-JFK as a D1 route can only be sold as part of an O&D (origin and destination) D1 fare. It's possible there's no O&D D1 fare filings on route (although if you can get it on return, that doesn't make sense) or there's simply no married segment inventory availability on flights. Hard to know exactly without knowing route and date to lookup inventory availability on ExpertFlyer.