United Airlines said Tuesday it was canceling a total of 24 flights to and from China.<br />The news comes as the Wuhan coronavirus outbreak leads to plummeting demand.<br />The coronavirus originated last month. It has infected more than 4,600 people and killed at least 107.<br />According to Business Insider, the US Department of State issued a travel warning on China.<br />It upgraded its alert to level three, or "reconsider travel.
