Lightning strikes over the Puyehue-Cordon Caulle volcano in Chile, seen from the international cross border way Cardenal Samore, in southern Chile, Sunday June 12, 2011. The volcano erupted June 4 after remaining dormant for decades. Chilean officials ordered most residents already evacuated from homes near the erupting volcano to stay in shelters and with family and friends Sunday due to the threat of deadly landslides. The ash spread across the Pacific, prompting authorities to suspend flights in Australia and New Zealand. (AP Photo/Alvaro Vidal)

(AP) -- The cloud of ash spewing from Chile's erupting volcano has grounded more flights in countries from Uruguay to Australia and is threatening to delay next month's start of the Copa America football tournament in Argentina.

Argentine Football Association president Julio Grondona says the July 1 start of the Copa America could be pushed back due to cancelations of flights caused by the volcano.

Grondona tells the Argentine broadcaster Radio 10 that "from no point of view are all the countries prepared to come to Buenos Aires" in time.

The main international airports in Argentina and Uruguay were closed on Tuesday, and across the Pacific more Australian flights were canceled because of from Chile's Cordon Caulle volcano.