Air Canada has announced that its crews will be back on the job following a back-to-work order from the federal government, but cautions it could take days for operations to return to normal.

The airline released a statement on Sunday morning saying the Canadian Industrial Relations Board (CIRB) has directed the organization to resume airline operations by 2:00 p.m. EDT on Sunday.

The Federal Minister of Jobs and Families, Patty Hajdu, referred contract negotiations between the airline and CUPE, the union representing many of its flight attendants, to final binding arbitration on Saturday, ending a strike that had begun earlier that same day.

According to Air Canada, the strike caused the suspension of more than 700 flights.

The CIRB has also extended the term of Air Canada’s previous collective agreement to last until a new deal is signed.

No information has been released on the timeline for the arbitration process.

Because of the work stoppage, staff and aircraft are out of position, making it difficult to quickly resume operations.

“Restart of operations will begin immediately, with first flights this evening, but Air Canada expects it will take several days before its operations return to normal,” said Air Canada in a press release. “During this process, some flights will be cancelled over the next seven to 10 days until the schedule is stabilized.”

Air Canada is strongly recommending against customers going to the airport unless they have a confirmed booking and their flights are showing as operating on your flight status.