A FIFA spokesperson told BBC Sport that the president regularly travels with relevant staff for official and tournament duties, and seeks to visit FIFA member associations whenever possible.
They added that trips may be booked on commercial airlines, including low-cost carriers, or on private charters, depending on what is most efficient and cost-effective in each case.
BBC Sport asked FIFA whether any World Cup journeys were taken on commercial flights, how many people flew on the Qatar Executive jet, and whether the organisation offsets those emissions, but it has not replied.
Freddie Daley of the sport climate action network Cool Down said Infantino’s apparent use of a private jet during the World Cup reflects FIFA’s shortcomings on environmental sustainability.
Daley, a researcher at the University of Sussex, argued that opting for a private jet conflicts with the level of environmental leadership expected from FIFA’s top official.
Private jets have a markedly outsized impact, said Denise Auclair, a sustainable travel specialist at the European Federation for Transport and Environment, noting they can be five to 14 times more polluting than commercial planes and 50 times more than trains.