OTTAWA—Canada is extending the use of quarantine hotels for international air travellers another month, and considering whether it needs to do more to stop COVID-19 cases from getting into the country from abroad. Prime Minister Justin Trudeau said that could include barring incoming flights from specific countries, such as India, even as he defended his government’s actions on the border as effective Tuesday. “We are continuing to look at more and I have asked our officials to look carefully at, for example, what the U.K. has done very recently on suspending flights from India,” he said. The U.K. is adding India to its “red list” of countries from which it bars incoming flights. Only British citizens arriving from one of the 40 countries on the list are permitted entry, and they must go to quarantine hotels for 10 days. India has reported more than 250,000 new cases of COVID-19 daily …