Air France-KLM said its losses mounted sharply in the first quarter compared to a year earlier, when earnings were boosted by a gain in the value of oil price hedging contracts the airline uses to manage its fuel costs.
The company said in a statement it lost €630m in the three months from January to March, compared to a loss of €379m a year earlier.
Last year's result benefited from a €220m gain on the airline's hedging contracts.
The airline, in the midst of a three-year turnaround plan, said it hopes to strengthen its position by paying down debt and reducing staff costs further.
Air France-KLM is struggling to compete against low-cost carriers and has said it expects to cut about 5,000 people in its workforce of 49,000. It said the plan is on track despite "a difficult and uncertain environment."
The company saw passenger activity rise 0.8% in the quarter while capacity was held nearly steady. Passenger revenue rose 1.4% to €4.5 billion for the three month period.
