British Airways, part of International Airline Group, said 1,200 jobs are under threat as a result of plans to integrate UK airline bmi into its Heathrow operations.
The airline said on Thursday it had begun a consultation with unions over the proposed job cuts.
Last month BA was given regulatory approval from the European Commission to buy bmi from German carrier Lufthansa. The deal is expected to complete later this month.
BA said the integration plan for bmi, which is losing over GBP£3 million (USD$4.8 million) a week, would retain about 1,500 jobs, including around 1,100 cabin crew, pilots and engineers based at Heathrow.
The Unite union said on Thursday it would fight to save as many jobs at bmi as possible.
“bmi’s future has been secured but we are very saddened at the scale of the job losses being proposed,” the union said, adding that it would look to ensure that, where vacancies exist, bmi workers can be placed within roles at BA.