Christmas is known to mark the peak of travel around the world, but this year, the outbreak of the Omicron mutant of the Corona virus caused more than 7,000 flights around

the world to be cancelled over the Christmas holiday and thousands more postponed, according to Oil specialist website. The majority of cancellations were recorded at airports in China and the United States.

According to Flightaware.com, some 2,800 flights were cancelled Saturday, including more than 970 flights from or to US airports, and more than 8,000 flights were postponed. Friday, about 2,400 flights were cancelled, and some 11,000 flights were declared postponed.

Pilots, flight attendants and other staff have reportedly asked for sick leave or had to undergo quarantine after they had met or been infected by COVID-19, forcing Lufthansa, Delta, United Airlines, JetBlue and a large number of other underworked airlines to cancel flights in a period of year.

While more than 109 million Americans hoping to meet their family members were scheduled to travel after travel and Christmas celebrations were significantly reduced last year, the cancellation decisions exacerbated the frustration associated with the epidemic for many Americans.

However, the bulk of these plans were prior to the outbreak of the Omicron mutant, which has become dominant in the United States, where some hospitals and health care staff are currently under pressure.

However, the largest number of cancellations were announced among Chinese airlines. China Eastern announced about 1,000 flights (more than 20 percent of its scheduled flights) and Air China suspended approximately 20 percent of its scheduled flights during this period.