British Airways hopes to have drawn a line under a troublesome winter by announcing a £53 million drop in pre-tax profit.
In the three months to December 31st the airline recorded pre-tax gains of £113 million compared to £176 million in the same period last year.
Operating profit at BA similarly fell £47 million to £129 million for the quarter.
As well as the continued disruption caused by heightened security measures in the summer, severe fog at London airports caused BA to cancel 800 flights in the week leading up to Christmas last year; costing the firm an estimated £40 million.
Earlier this week the airline successfully averted industrial action by cabin crew staff, but chief executive Willie Walsh admits that the "patience and loyalty" of customers has been strained.
"We are now refocusing on customer service to win back the confidence and trust of our customers," he said.
On today's fourth-quarter performance Mr Walsh added: "These are mixed results with costs up three per cent reflecting higher fuel costs and revenue up 0.5 per cent to £2.1 billion."
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