Thai Airways International has been forced to further extend the suspension of most of its overseas flights until the end of the year.

However, the carrier will operate special repatriation flights between London and Bangkok for passengers that meet the entry regulations for Thailand every Sunday and until the end of December 27.

The restricted international flight schedule has been blamed on the ongoing Covid-19 outbreak, “the continuous immigration restrictions and governmental measures imposed by several countries”.

A limited number of flights will operate from the Thai capital to Copenhagen, Frankfurt, Sydney, Taipai, Hong Kong and Tokyo in December.

The airline, which is undergoing financial restructuring, said: “We appreciate the continuous disruption to our passengers’ travel plans, caused by Thai being unable to operate its regular scheduled network and whenever possible we endeavour to give as much advance notice of any cancellations as possible.

“We truly apologise for the inconvenience this may cause.

“We understand that passengers may have questions about changes to bookings. We are trying our best to respond to all queries, but all our teams are extremely busy at present which has greatly affected our response time.”