The Dutch cartel watchdog ACM said on Friday it had found no evidence that KLM and Schiphol airport were working together to advantage the Dutch flag carrier, in response to a complaint brought by Ryanair.

Ryanair accused KLM and the airport of colluding to the benefit of the Dutch airline, by making deals on flight capacity and on giving KLM the best arrival and departure times.

The ACM  said in a statement that its preliminary investigation had shown no evidence of rule breaking and said it would not be taking any action.

Tour operator TUI, Easyjet and Corendon have also protested about what they say is the privileged position which KLM has at Schiphol, in the past.