Wizz Air is a low-cost European airline headquartered in Budapest, operating 231 aircraft as of FY2025 and carrying 63.4 million passengers.
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Wizz Air reports verified Scope 1/2 emissions and multi-category Scope 3 data, but absolute emissions are rising as the airline expands its fleet toward 500 aircraft by 2030. The 25% intensity-reduction target by 2030 is unvalidated, intensity-only, and showing stagnation. An upheld UK advertising ruling in November 2024 banned claims of being 'one of the greenest' as misleading.
Wizz Air scores 31/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified July 2026.
That places Wizz Air joint 588th of 847 companies scored, and 2nd of 23 in Airlines / Aviation.
Where Wizz Air sits among airlines / aviation peers.
Among the 23 major airlines / aviation brands we've scored, Wizz Air sits 2nd of 23.
Its three lowest-scoring questions, and what the evidence didn't show.
No absolute emissions reduction target exists.
FY2025 SAF uplift undisclosed.
No TNFD disclosure, no biodiversity targets, no SAF feedstock deforestation policy.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Carbon Footprint — Operations and Transparency & Accountability (7/10, 6/10). Weakest on Emissions Trajectory and Energy Source (2/10, 3/10).
The one company in the sector scoring above Wizz Air.
See the full Airlines / Aviation table →Wizz Air's score has moved from 23 to 31 across 2 recorded reviews, up 8 points.
Re-classified Aerospace[38] -> Airlines / Aviation[28]; score 33->31
Initial score at platform launch
The formula and all 15 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale15 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
9 of 15 sources are independent of the company.
“The report was verified by independent third parties and highlights measurable progress”
“ClimatePartner's carbon accounting provided the foundation for setting this reference year”
“category 2 and 3 associated with jet fuel and energy related activities ... account for more than 88% of Scope 3 emissions”
“The total CO2 emissions for August were 566,493 metric tons, a 5.7% increase year on year”
“ambitious but achievable plan to grow its fleet to 500 aircraft by 2030, doubling the fleet between 2025 and the end of the decade”
“Wizz Air ... committed to align its decarbonization goals with the Science Based Target Initiative (SBTi) in 2021”
“In March 2025, Wizz Air presented its Net Zero Plan, 'Flying Towards Net Zero' to the Committee for approval”
“77% less land fill and 68% less water consumption, when compared to traditional leather seats' production”
“Waste generated ... 21.8Ktonnes, 2025”
“Monitor and reduce energy and water usage within our premises in order to minimize the consumption of natural resources”
“Wizz Air's value chain mapping is currently in progress as part of our preparations to report in line with the CSRD regulation”
“The ad must not appear again in the form investigated”
“Wizz Air and Ryanair - reached a landmark agreement with the EU Consumer Protection Cooperation Network to overhaul how they communicate their climate initiatives”
“Wizz Air oppose other key measures to decarbonize aviation, including an EU kerosene tax”
“Wizz Air used more than 27,000 tonnes of SAF during the financial year, as mandated by the EU under ReFuelEU Aviation requirements”
If you believe a source has been misread or a newer version exists, submit a challenge.
Wizz Air is a low-cost European airline headquartered in Budapest, operating 231 aircraft as of FY2025 and carrying 63.4 million passengers. Founded in 2003, it operates primarily point-to-point routes across Europe with a fleet weighted toward fuel-efficient GTF-engine aircraft. The airline is positioned as a price competitor in the budget segment.
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