BUENOS AIRES — Argentina on Monday banned all commercial flight ticket sales until September, one of the toughest coronavirus travel bans in the world, prompting an industry outcry that the new measure will put too much strain on airlines and airports.

While the country’s borders have been closed since March, the new decree, signed by the National Civil Aviation Administration, goes further by banning until Sept. 1 the sale and purchase of commercial flights to, from or within Argentina.

Many countries in South America, including Ecuador, Peru and Colombia, have banned all commercial flights for the time being, but none have extended their timeline as far out as Argentina. The United States, Brazil and Canada have imposed restrictions, but not outright bans.

“The problem was that airlines were selling tickets without having authorization to travel to Argentine soil,” a spokesman for President Alberto Fernández said.