United Airlines has San Francisco or San Jose to Paris tickets for $330 round trip with one stop each way or $426 round trip for nonstop flights. Low prices start in mid-September.
United Airlines San Francisco SFO – Paris CDG – San Francisco SFO
$425.43 round trip Sunday Sep 22 – Thursday October 3
United Airlines San Jose SJC – Chicago ORD – Paris CDG – Chicago ORD – San Jose SJC