All I did was go to Expedia and put in JFK and CDG and $149 on Tuesday, July 15th on Norse Atlantic Airways popped up. Return flights the next week were $200-300. Round trip with a one-week stay were ~$500.

Round trips in September are $386-500 depending on the day and duration of the stay. The $386 fare was for a tuesday-to-tuesday week stay and I might just take it, I will be bumping up against use-or-lose limits for PTO by then. There are fewer crowds in September and the weather is really nice.

https://imgur.com/Wn43raL