Reports suggested at least 18,000 passengers were grounded after the services in and out of Gatwick and Heathrow — Britain's busiest airports – were cancelled.
The airline says a "systems issue" is causing delays and cancellations Wednesday for short-haul flights from Heathrow, Gatwick and London City airports.
British Airways-owner IAG plans to raise about 1 billion euros ($1.2 billion) through a bond issue, which it said would help see it through if the pandemic-driven travel downturn lasts longer than expected.
British Airways (BA) owner IAG launched a heavily discounted rights issue on Thursday to raise 2.74 billion euros ($3.2 billion) to help strengthen its pandemic-hit finances, in a first test of faith in its new boss Luis Gallego.
The first flight PK9702 will carry more than 250 passengers from Manchester to Islamabad and the next flight PK9785 will airlift passengers from Islamabad to London are scheduled for Aug.14 and 15 respectively, PIA spokesman Abdullah Hafeez said.
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.
International airlines including British Airways and Cathay Pacific have drastically truncated routes to such places as northern Italy and South East Asia as demand sharply plummets.
Airlines around the world said they would make more drastic cuts to their flying schedules, shed jobs and seek government aid after countries further tightened border restrictions because of the fast spreading coronavirus.
The British flag carrier has massively reduced flights and warned it will need to cut jobs to survive the emergency as the battered aviation sector frantically seeks to take out costs.