Wizz Air Tops Major Airline Emissions Rankings

National Post

3 days ago

Article content
Cirium, the aviation analytics company, creates a new transparent standard and ranking for airline CO2 emissions, identifying the best performing airlines in specific categories
Article content
LONDON — Wizz Air is the world's most emissions-efficient airline in new rankings released today by Cirium, the aviation analytics firm. The Cirium Flight Emissions Review ranks the top 20 airlines globally, through a consistent benchmark for flight emissions.
Article content
Wizz Air, the Hungary-based ultra-low-cost airline emits an industry low of 53.9 grams of CO₂ per Available Seat Kilometer (ASK)*, followed by Frontier Airlines (54.4 grams) and Pegasus (57.1 grams) according to the report.
Article content
The rankings provide the aviation industry with verified comparable data on an equal playing field as the sector advances toward Net Zero by 2050 commitments. The rankings performance use Cirium's EmeraldSky platform, which achieved ISAE 3000 Reasonable Assurance from PricewaterhouseCoopers (PwC) and official accreditation from the Rocky Mountain Institute (RMI).
Article content
Wizz Air, Frontier, and Pegasus Top 3; The Top 20 Major Airlines Ranked by CO2 Emissions/ASK
Article content
The top 20 Major airlines globally are presented in the corresponding tables.
Article content
Of note is the performance of Indigo, top in Asia, Volaris, top in Latin America and the Caribbean, and Jetstar, for its performance in Australia.
Article content
The CO2/ASK Emissions of the World's Largest Airlines
Article content
Cirium's reporting also ranked the 10 largest airlines in the world by ASK. At the head of the table is Ryanair, followed by Southwest Airlines, and Delta Air Lines. Each of the major U.S. carriers earned spots at the table, while Turkish Airlines, Qatar Airlines and Emirates rounded out a group of primarily long-haul operators.
Article content
Enabling Fair Comparison Across the Industry
Article content
'For the first time, airlines can compare their emissions performance using a consistent, verified methodology,' said Jeremy Bowen, CEO at Cirium. 'EmeraldSky provides the industry-standard benchmark that enables fair comparison and meaningful progress tracking.'
Article content
The comprehensive Review analyzed global operations using dual-accredited methodology, with the full report containing extensive findings across:
Article content
Global Category Rankings showing the top 20 Major airlines and the World's 10 largest airlines by CO₂ per Available Seat Kilometer
Regional Performance breakdowns showing which airlines excel on intra-region and inter-region routes
Route-Level Improvements identifying specific airport pairs with the greatest efficiency gains
Operational Insights revealing how fleet composition, load factors, and route optimization drive performance differences
Article content
The Review provides comprehensive operational insights that support industry-wide efficiency improvements, offering actionable intelligence for aviation stakeholders committed to sustainability progress.
Article content
Setting New Industry Transparency Standards
Article content
EmeraldSky's methodology achieved the highest level of assurance under International Standard on Assurance Engagements through rigorous independent review. The Rocky Mountain Institute's accreditation under the Pegasus Guidelines validates the approach for climate-aligned aviation financing, enabling banks and investors to make informed decisions based on verified emissions data.
Article content
This standardized approach addresses aviation's fragmented sustainability reporting, where inconsistent methodologies have made meaningful comparisons impossible. The verified benchmark enables airlines to assess their operational efficiency accurately, investors to evaluate performance reliably, and corporations to report Scope 3 emissions with confidence.
Article content
Quarterly Updates Drive Accountability
Article content
The Flight Emissions Review will be updated quarterly, tracking performance changes and operational improvements across the industry. With hundreds of data points and detailed analysis across multiple categories, the report provides the most comprehensive view of aviation emissions performance available.
Article content
Access the Complete Rankings and Analysis
Article content
The full Flight Emissions Review, including detailed carrier rankings, regional breakdowns, route-specific analysis, and operational insights, is available for download at www.cirium.com/flight-emissions-review.
Article content
Notes to Editors
Article content
* Available Seat Kilometers (ASK) is a metric in the airline industry that represents the total passenger capacity of an airline
Article content
About Cirium
Article content
Cirium ® is the world's most trusted source of aviation analytics. The company delivers powerful data and cutting-edge analytics to empower a wide spectrum of industry players. It equips airlines, airports, travel enterprises, aircraft manufacturers, and financial entities with the clarity and intelligence they need to optimize their operations, make informed decisions, and accelerate revenue growth.
Article content
Cirium ® is part of LexisNexis ® Risk Solutions, a RELX business, which provides information-based analytics and decision tools for professional and business customers. The shares of RELX PLC are traded on the London, Amsterdam and New York Stock Exchanges using the following ticker symbols: London: REL; Amsterdam: REN; New York: RELX.
Article content
Article content
Article content
Article content
Contacts
Article content
Media Contact
Article content
:
Article content
Article content
Article content
Article content