American Airlines has adopted a different view of its hubs during the pandemic, pivoting away from having defined roles for its largest bases and instead using them to maximize itineraries for its customers.

After more than a year in hibernation, Canada’s airlines are reawakening as the country opens back up to vaccinated travelers.

American Airlines is the first U.S. global network carrier to warn that rising COVID-19 case numbers are contributing to a softening of demand, but the company has not refined its capacity or financial guidance for the current quarter.