New York, June 3 (RHC)-- New global guidelines featuring physical distancing to restart aviation safely during the pandemic could add up to two hours of pre-departure time for passengers at some airports during peak hours, the head of an international airports' group said.

"A large airport with low volume, they should not need much more time for the passenger to come to the airport to keep the physical distancing," Angela Gittens, director general of Airports Council International (ACI), told reporters.

"At a smaller airport or an airport that has peaking, I would say that it is going to be another hour or even two hours."

A United Nations aviation agency-led task force has published guidance for airlines, airports and countries to achieve a uniform approach to flying safely during the coronavirus pandemic.