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.

Air Canada flights will resume Tuesday evening, it said. Details were sparse on the tentative deal between the company and its flight attendants union, CUPE.

Air Canada flight attendants said Tuesday they had reached a "tentative" deal with the airline to end a strike over wages and ground work that has cancelled travel for half a million people worldwide.