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.

TORONTO — Air Canada and the union representing its flight attendants have reached a tentative deal to end a strike that began on Saturday morning. But thousands of passengers have been left scrambling. The airline said it will gradually begin operations Tuesday.

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.