I recently moved to the Bay Area from LAX and travel quite often to PVG. I noticed the options for SFO-PVG aren't as great as LAX-PVG--specifically there aren't as many non-stop options. I wanted to appeal to the expertise of any veteran SFO-PVG fliers who are Delta/Skyteam; are there any best practices or tips for booking DL flights for SFO-PVG?