Airlines impacted by Hong Kong's ban on travellers from India, Pakistan and the Philippines include carriers such as Cathay Pacific, Hong Kong Airlines, Vistara and Cebu Pacific.
Health Secretary Matt Hancock said that effective from 0300 GMT on Friday, India was being added to Britain's "red list" of countries, banning all arrivals from India except for UK or Irish nationals.
A charter from the Spanish carrier Wamos Air is scheduled from Islamabad to London Stansted. The last seats were being sold at around 300,000 rupees – over £1,400 one way.
Kuwait has suspended all flights from India until further notice, Bahrain has updated International arrival procedures for passengers from India. Germany is sharply restricting travel from India and Iran has banned all flights to and from India and Pakistan.
A poll of nearly 2,600 pilots by UK-based GOOSE Recruitment and industry publication FlightGlobal, released on Thursday, found only 43% were doing the job they had trained for, with 30% unemployed, 17% furloughed and 10% in non-flying roles.
According to the official Saudi Press Agency cited the ministry as saying the Kingdom wants to ensure that the majority of the public is immunized against the coronavirus before lifting the ban and reopening borders.
British and Irish citizens and people who have residence rights in the UK can enter, as commercial flights are not banned. However, they must quarantine in a government-approved hotel for 10 days at their own expense and must take a COVID-19 test on days two and eight of their self-isolation.
Etihad Airways has operated its first ever flight to Havana, Cuba. The goodwill flight, chartered by the Government of the United Arab Emirates, landed in the capital of the Caribbean island nation, carrying Cuban nationals returning home from the UAE.
"However, international scheduled flights may be allowed on selected routes by the competent authority on case to case basis," the Directorate General of Civil Aviation circular read.
Like millions of other Britons, the prime minister will be able to have a trim and a tipple on Saturday, when the country takes its biggest step yet out of coronavirus lockdown with the reopening in England of restaurants, pubs and hairdressers, along with secular and sacred venues including cinemas and church.