Tough airport security measures brought in after August's terror alert have cost British Airways £100m.
The measures, which introduced strict limits on hand luggage and regular searches, caused widespread disruption.
BA said profits in the three month period including August fell 27%, but over the six-month period to 30 September profits rose 1.6% to £371m.
http://news.bbc.co.uk/1/hi/business/6112252.stm