Infantino, speaking at the opening of the Asian Football Confederation's new headquarters in Kuala Lumpur, said of the potential fast-track: "If it is possible, why not? We have to see if it is possible, if it is feasible. We are discussing with our Qatari friends, we are discussing with our many other friends in the region and we hope that this can happen.
"And, if not, we will have tried. We will have tried because we always have to try to do things in a better way."
Infantino also reiterated his plans to expand the Club World Cup, saying he wants to make it a "real competition" that "every club in the world can target".
Last week he said a "task force" will be appointed to examine the implications for football globally after he was forced to shelve plans to generate up to £19 billion through two fresh competition formats, one for the international game and the other for the elite clubs.
Uefa earned £2.5 billion last season, more than half the £4.3 billion generated by Fifa in the four-year cycle from 2015-2018. The Uefa president, Aleksander Ceferin, was reportedly threatening to lead a walkout of the Fifa council meeting if the new tournament proposals were voted through.
Fifa has been exploring the idea of fast-tracking the World Cup increase for months. After football's world governing body voted to expand the tournament from 32 teams for 2026, the South American confederation Conmebol asked for it to be brought forward.
In April, Infantino said: "It seems to me a very interesting idea. We have to study it seriously and if it is possible, why not?
"I firmly believe in an enlargement because I am convinced that it is good for the development of football. That is why we have proposed it and that is why we have agreed to it since 2026."