Is it possible to through-check luggage on 2 separate tickets, but the ticket spans 2 countries? I have an itinerary with Air Canada to CDG, then continue on separate ticket with Air France to a destination (not sure yet) either in Switzerland (Geneva or Zurich) or Vienna. Yes, I know about the train option but let's pretend they're not there for the moment. I assume that AC and AF have interline agreement? If yes, can I check my luggage all the way through the final destination and not exit immigration at CDG?