Wizz Air first in Europe for emission efficiency
Wizz Air has been ranked first in Europe and second globally in the Cirium 2025 EmeraldSky Annual Review, one of the leading independent rankings dedicated to emissions efficiency in aviation. The airline has also been granted Gold status, reserved for the five most efficient carriers in the world, confirming its commitment to reducing the intensity of CO₂ emissions, while maintaining a wide and accessible offer of connections.
The EmeraldSky ranking analyzes the 100 largest airlines in the world based on CO₂ emissions per kilometer per available seat (ASK). The methodology used is independently verified by PwC according to the ISAE 3000 standard and is also accredited by the Rocky Mountain Institute as a qualified source of flight emissions data according to the Pegasus Guidelines, the first framework for climate finance applied to aviation.
In 2025, Wizz Air recorded 52.9 grams of CO₂ per ASK globally and 53.1 grams of CO₂ per ASK in Europe, placing it well ahead of its closest European competitors. This result reflects the airline's efficiency-oriented operating model and the contribution of one of Europe's youngest fleets, with an average aircraft age of 4.7 years, consisting largely of new-generation Airbus A321neos.
In the European regional ranking, Wizz Air therefore ranks first with 53.1 g of CO₂ per ASK, on a network that exceeds 335,000 flights per year. For passengers, this indicates that the company is able to maintain a very extensive network of short and medium-haul connections with a particularly high level of emission efficiency.
The second place in the world takes on an even more significant value if we consider the operational characteristics of the carriers in the ranking. The only airline (Scoot, a low-cost subsidiary of Singapore Airlines) that precedes Wizz Air operates significantly longer average routes, exceeding 2,100 km, while the average of the Wizz Air network is 1,547 km. This element highlights the solidity of the company's performance especially in the short and medium-haul flight segment, which is generally more complex to optimize in terms of emissions per available seat.
According to Wizz Air, this result is the result of long-term investments consistent with the "Flying Towards Net Zero" roadmap. Fleet renewal remains one of the main pillars, with the gradual entry of new Airbus A321neos, which consume less fuel per seat than previous generation aircraft.
In addition to fleet modernization, the company is also working on other fronts related to the decarbonization of the sector. These include investments in SAF, sustainable aviation fuel, through companies such as Firefly, and collaborations with Gen Phoenix and Geven for the development of circular materials and lightweight cabin solutions, useful for further reducing fuel consumption.
Wizz Air also points out that the next progress in reducing emissions will also depend on collaboration throughout the aviation supply chain, involving manufacturers, fuel suppliers, airports and policymakers.
