Walker became the world’s most expensive defender when he completed his move from Tottenham last Friday and will get to know his new team-mates well during their three game tour of the States.
The England defender looked relax as he was happy to sign autographs and made his way towards the check-in desk and is set to make his debut against Man United in Houston on Thursday night.
Walker already has strong connections with the likes of John Stones and Raheem Sterling who he has played alongside on a number of occasions for the national team.
Both Stones and Sterling are part of a strong City squad that Pep Guardiola is taking with him to the States.
Skipper Vicent Kompany, Sergio Aguero, Gabriel Jesus, David Silva and new signing Ederson were part of the travelling party, while Samir Nasri who spent last season on loan at Sevilla was also included in the squad.
The only absentees from Guardiola’s squad were summer signing Bernardo Silva who has been allowed extra time off following his participation at the Confederations Cup for Portugal when his side won the third place play-off against Mexico on July 2.
Goalkeeper Claudio Bravo will also make a late return to pre-season training later this month after he was part of the Chile side that lost in the Confederations Cup final against Germany.
Fellow keeper Joe Hart was also missing as he prepares to complete his season-long loan move to West Ham on Monday.
City play three games in America with the first against arch rivals Manchester United in Houston on Thursday night.
Guardiola’s side will also face Real Madrid in Los Angeles on July 26 and Tottenham in Nashville on July 29.