TORONTO — Air Canada said it will gradually restart operations after reaching an agreement early on Tuesday with the union for 10,000 flight attendants to end a strike that disrupted the travel plans of hundreds of thousands of travelers.

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.