Air France-KLM has been struggling financially since 2009, leading to an increased net debt and operating losses, which have prompted the airline to implement a 'transform 2015' plan aimed at reducing costs and debt. Despite early success following their merger in 2004, the company faced challenges from rising fuel costs, low-cost airline competition, and economic downturns in key markets. The airline's recent strategies include significant cuts to capital expenditure and code-sharing agreements with other airlines to improve competitiveness.