British Airways cancelled four round-trip flights today as the effects of yesterday's problems continued.
The airline hoped the domestic cancellations from Heathrow would be the last as its operations return to normal.
The 6.30 a.m. to Manchester did not fly, and nor would the 9.55 a.m. to Newcastle, the 1.55 p.m. to Aberdeen or the 18.35 p.m. to Glasgow, or their return trips, a spokesman said.
PA