BBC News - Georgina Rannard
Five airlines are suing the Dutch government over plans to cut the number of flights operating from Europe's third-busiest airport.
The government cited local concerns at Amsterdam Schiphol about the impact of flying on noise pollution and climate in its decision.
Airlines KLM, Easyjet, Delta, Tui and Corenden say the plans are in breach of EU and international law.
The cap would reduce the annual number of flights from 500,000 to 440,000.
The government says it wants to strike a balance between the economic benefits of a large airport and a healthy living environment, prioritising tackling noise pollution.
Global aviation is responsible for 2.4% of global greenhouse gas emissions. These gases warm the atmosphere, contributing to global warming and climate change.