There's no nonstop path from the East Bay to the Languedoc, which means the real decision on business class from Oakland to Montpellier isn't whether to fly direct—it's which European gateway to route through. After dozens of iterations on this itinerary, I've settled on a clear hierarchy: Delta via Amsterdam or Paris-CDG using joint venture partner Air France, Air France direct through CDG, or Lufthansa via Frankfurt or Munich. The factual bottom line is this: Oakland to Montpellier business class requires one connection, typically landing you at Montpellier–Méditerranée after a short regional hop from a major European hub, with total journey times running 14-16 hours door to door including the connection.
My preference leans toward Air France's Boeing 777 or A350 business class out of CDG, where the seat product has been steadily upgraded to full suites with closing doors on newer aircraft—worth requesting specifically when booking, since older 777 configurations still fly this corridor. Lufthansa's Allegris business, now rolling out on select long-haul routes from Frankfurt and Munich, is the most modern hard product of the three carriers if you can secure it, though availability from OAK connections can be inconsistent. Delta's codeshare access to Air France metal often yields the best award availability in my experience, particularly booking through Delta's own site rather than Air France directly—a quirk that's saved me from months-long waitlists. Whichever carrier you choose, build in a two-hour minimum connection at CDG or Frankfurt; both airports involve significant walking between terminals for connecting international flights.
Late autumn and the dead of winter—January through March, plus October and November—consistently offer the softest business class fares on this corridor, as Provence tourist season quiets and corporate travel dips. I've found Tuesday and Wednesday departures from Oakland yield better upgrade and award space than weekend flights, since business travelers cluster around Monday and Friday patterns. Given how much fares fluctuate week to week on this multi-carrier itinerary, setting up automated fare tracking for this specific route is the smartest move you can make before booking.