There are two "direct", albeit not non-stop, AA/US flights between LAX and CDG:
AA146 with a stop and "change of gauge" (i.e. change of plane) in BOS and
US754 with a stop and "change of gauge" in PHL.
In truth, these are completely different flights. However, since they operate under the same number, they count as a single flight for redemption purposes as if they were non-stop flights.
OTOH, there is, afaik, no "direct" OW flight between SFO and CDG.