A sit-in at Hong Kong International Airport — a protest over a controversial extradition bill, police violence and other issues — on Monday and Tuesday could not have come at a worse time for people who booked vacations to coincide with the Bon holiday this week.

Hundreds of flights into or from Hong Kong remained canceled Tuesday, including at least 10 from Japan.

Among those affected, an Air India flight from Kansai International Airport to Hong Kong was canceled, and a Hong Kong Express Airways Ltd. flight to Tokyo International Airport was delayed by almost two hours, the Hong Kong airport's website showed.