Right now, January/2020 is the most affordable month to travel to Paris. You will pay the most in February/2020.
British Airways, Air France, Iberia, Finnair, Norwegian, Delta, United, American Airlines and Brussels Airlines fly direct between the United States of America and Paris.
TAP AIR PORTUGAL is the cheapest airline that flies to Paris from the United States of America.
Lufthansa is the best airline to fly to Paris from the United States of America. For non-stop flights then British Airways is best. Norwegian is the best low-cost airline.