Air Canada and a union representing the airline’s flight attendants have come to a tentative agreement, ending a days-long strike that canceled thousands of flights and stranded passengers.

Air Canada said it will gradually resume flights, but warned that a complete schedule could take up to a week.

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