Air Canada says it will cancel all flights to the US after Ottawa extended its border closure with the United States by 30 days. Canada’s largest airline says scheduled service south of the border will be suspended from April 27 through May 21.

Flight-change fees for affected customers is being waived.

Since mid-March, Air Canada has cut its capacity by more than 90 percent, cancelling thousands of flights as borders closed and travel demand fell off a cliff.

On Saturday, Prime Minister Justin Trudeau confirmed that Canada would continue to restrict non-essential travel across the border.

The border was originally closed on March 21 because of the COVID-19 pandemic.