A traveller walks in the Terminal 2 corridors of the Roissy-Charles de Gaulle airport with Air France airplanes in the background, in the northeastern outskirts of Paris, on September 16, 2022, amid a strike of air traffic controllers.Julien De Rosa | AFP | Getty ImagesFlights to Europe will be plentiful this summer. Cheap airfare? Not as much.Airlines scheduled a near-record 51,000 flights from June through August from the U.S. to Europe, according to airline data firm Cirium. The number of scheduled seats is the highest since 2018.Despite that increase in capacity across the Atlantic, fares are up sharply as airlines test travelers’ appetites for trips abroad. According to Hopper, U.S.-to-Europe roundtrip flights are going for an average of $1,032, up 35% from last year and 24% from 2019. Average domestic U.S. airfare, by contrast, is down 15% from a year ago to $2 …
