Passengers on Tuesday's Lufthansa flight from Frankfurt to Chicago were gifted Germany shirts as the World Cup squad was also on board.
The shirts were distributed before the take-off of flight LH434 and several passengers made immediate use of them.
The German team previously travelled to big event on charter flights but this time chose a regular flight for environmental reasons.
The regular passengers were in economy while first and business class in the Airbus 350-900 was reserved for players led by captain Joshua Kimmich, coach Julian Nagelsmann and his staff and officials.
The team boarded separately after a farewell ceremony by long-time national federation DFB partners Lufthansa.
Germany will in Chicago for a few days and play a final tune-up match there against the United States on Saturday.
They move into their World Cup base camp in North Carolina on Monday and start the World Cup on June 14 against debutants Curaçao. Ivory Coast and Ecuador are the other group stage opponents.