British Airways says it intends to cut 3,000 jobs by April 2010.
The figure includes the reduction of 1,700 full-time cabin crew positions that has already been announced.
This means that the airline will have cut 4,900 jobs in total by March 2012, which is 1,200 more than the airline had originally planned for the 2009 financial year.
Extra cutbacks will be made company-wide. The airline hopes voluntary redundancies and transitions to part-time work will support the elimination of many full-time positions.
"The global airline industry is facing continued pressure on yields highlighting a significant shift within the industry. We will introduce further structural change in the second half to secure the long-term future for our business," says chief executive Willie Walsh.
The airline says it has already cut employee numbers by 1,900 through a combination of voluntary redundancy, reduced overtime and increased part-time work.