Neil Chernoff, chief planning and strategy officer at British Airways, said the route was an “important addition to our network, strengthening connectivity between the Channel Islands and London, and opening access to further destinations across Europe, North America and beyond”.
Flights start from £96 return, including taxes, and will operate daily from Heathrow Terminal 5.
In 2019, Guernsey’s States launched a daily direct service between Guernsey and Heathrow, marking the first such link in over 20 years.
The route was subsidised by the States of Guernsey with £825,000 in funding and ceased in March 2020, coinciding with Flybe’s collapse.