Travelers arrive during a strike at Toronto Pearson International Airport in Mississauga, Ontario, Canada, on Aug. 16. Photographer: Arlyn McAdorey/Bloomberg Photo by Arlyn McAdorey / Bloomberg

(Bloomberg) — Air Canada reached a deal with flight attendants to end a three-day walkout that led to mass cancellations during the busy summer season and forced country’s largest airline to withdraw its financial outlook for this year.

The accord was reached early Tuesday after a mediated negotiation session that lasted more than nine hours, the union’s bargaining committee said in a post on its website.

“The Strike has ended,” the union said, addressing members. “We have a tentative agreement we will bring forward to you.”

Air Canada said separately that it planned to gradually resume serv

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