This picture taken in Paris on March 3, 2024, shows the silhouette of the Eiffel Tower and the city skyline with cloudy weather.Delta has the most service of any U.S. airline to Paris and has a joint venture with Air France. Together the two carriers have approximately 70% market share in nonstop service between the U.S. and France, according to consulting firm ICF."Unless you're going to the Olympics, people aren't going to Paris...very few are," Bastian told CNBC. "Business travel, you know, other type of ...