Iqaluit

So there's a third destination on this whistle-stop tour – Iqaluit, the capital of Canada's northernmost territory of Nunavut and homeland of its Inuit people.

Air India confirmed that the flight had been diverted to Iqaluit due to a "security threat posted online".

A video posted on social media last week showed passengers draped in woollens, walking down the icy ladder of an Air India plane into the frigid air of Iqaluit, a remote city in Canada.

In Canada - where the Air India flight to Chicago had landed at the Iqaluit airport as a precautionary measure - the Royal Canadian Mounted Police said it was investigating the threat.

Iqaluit Royal Canadian Mounted Police said Eric Dejaeger, 76, was arrested on a Canada-wide warrant in Kingston, Ontario, where he was living.