Air Canada and the union representing 10,000 flight attendants resumed talks late Monday for the first time since the strike began over the weekend. The strike is affecting about 130,000 travelers a day at the peak of the summer travel season.

Air Canada said it will gradually begin restarting operations, but warned that complete restoration of operations could take up to a week.

Air Canada and the union representing 10,000 striking flight attendants were holding early discussions on Monday night, the union said in a statement, the first such talks in nearly a week. In a rare act of defiance,