Corendon called 0.5% SAF a big investment — the law already required 2%, the RCC noted

Dutch travel organiser Corendon answered the question 'How sustainable is Corendon?' on its website with a set of claims: striving for 'a more sustainable form of holidaying', a 'significant investment' in buying 0.5% sustainable aviation fuel (SAF) in 2022, and the offer that passengers could 'significantly reduce' their flight's CO2 emissions by buying SAF themselves. It also displayed a self-designed green logo reading 'More sustainable and with a heart for a better world'. The Consumentenbond complained in June 2025.

On 16 September 2025 the Reclame Code Commissie declared the complaint largely well-founded. The SAF 'investment' claim omitted that a 2% SAF blend is now legally mandatory — Corendon presented less than the law requires as voluntary effort. The promise that a passenger's payment significantly cut their flight's CO2 was unsubstantiated and implied a causal link that Corendon confirmed is operationally impossible; at the hearing the company admitted it could not prove 'significantly'. The self-made logo was not an independent certification.

The committee also judged the sustainability ambition too vague to be verifiable and found Corendon's post-complaint website adjustments insufficient to withhold a formal recommendation. Corendon was recommended not to advertise in this manner again; it acknowledged some objections were well-founded and had adjusted the texts.