Least Expensive French City to Fly Into From USA?

Hello,

Is Paris generally the least expensive city in France to fly into coming from the U.S.? I imagine it recieves the greatest volume of international flights. What are some other French cities with major international airports?
The reason I ask is that I will be traveling to France in June but I don't have a preference as to which city I arrive in. So far I've only looked at flights into Paris, just wondering if any other city offers competitive rates.

Thanks!