The airline said operations will gradually restart after a deal was reached with the union, ending a strike that caused hundreds of flight cancellations and hit 500,000 customers.

Aviation analytics firm Cirium said that as of Monday afternoon, August 18, Air Canada had called off at least 1,219 domestic flights and 1,339 international flights since last Thursday, when the carrier began gradually suspending its operations ahead of the strike and lockout.

After multiple days with 10,000 flight attendants on strike, Air Canada has struck a deal with the union to resume its operations.