London, 04 December, 2025: Cirium, the global leader in aviation analytics, has announced a major step forward in sustainable travel, as it signs a landmark deal with Perk, the intelligent platform for unified travel and spend management.
Through this agreement, Perk’s customers now benefit from Cirium’s advanced flight emissions data – delivered via EmeraldSky, Cirium’s revolutionary flight emissions tracking tool. It enhances visibility into the environmental impact of flight choices, helping businesses and travelers make smarter, sustainability-led decisions.
For the first time Cirium’s flight-specific emissions data is marking a major leap forward for Corporate travel. The solution delivers unrivalled precision in CO₂ tracking, thanks to Cirium’s fusion of comprehensive flight data, science-led methodology, and real-time analytics.
Perk, one of the world’s fastest-growing travel management platforms, is now leveraging Cirium’s forecast and flown emissions insights to provide travelers and businesses with accurate, transparent CO₂ estimates at point of search. Post travel, these insights feed into Perk’s intelligent reporting suite, supporting sustainability tracking and regulatory compliance for the 10,000 companies the platform supports worldwide. This integration strengthens Perk’s position as the go-to platform for companies aiming to reduce business travel emissions responsibly and at scale.
Jeremy Bowen, Cirium CEO, said: “Accurate flight emissions data is essential to monitor the travel industry’s path to reach sustainability goals, and Cirium is proud to be the trusted source behind one of the most widely used corporate travel platforms. This partnership with Perk reflects the growing demand for credible, science-based data for the flight portion of the travel experience, and thanks to EmeraldSky, Cirium can now provide this to customers across the world who prioritize sustainability when booking flights and choosing their routing.”
Jean-Christophe Taunay-Bucalo, Perk President and Chief Operating Officer, said: “We’re thrilled to partner with Cirium to bring trusted, high-quality flight emissions data into Perk. CO₂ tracking is essential, but for most teams it’s been a manual, time-consuming task. By combining Cirium’s trusted data with Perk’s intelligent platform, businesses can eliminate that repetitive manual work and move beyond estimates to automated, reliable insights that support compliance and meaningful reductions.”
This builds on Cirium’s long-standing relationship with Perk, and follows the Group’s 2025 acquisition of AmTrav, an existing Cirium customer, which focuses on the US market.
Launched in 2024, Cirium’s EmeraldSky is an innovative platform, powered by a revolutionary methodology. It analyzes each flight’s specific aircraft type and configurations, combined with real-time operational data and flight conditions, ensuring unparalleled accuracy and reliability in emission tracking. As businesses face increasing pressure to reduce emissions, Cirium offers a future-proof solution for carbon accountability – empowering companies to meet internal targets while providing travelers with transparency and choice.
EmeraldSky seamlessly integrates Cirium’s comprehensive data, advanced analytics, and data science techniques to achieve unmatched precision in measuring both forecast and flown CO₂ flight emissions.
Unlike traditional carbon calculators that depend on broad estimates and generic assumptions – such as using great circle distance instead of actual flown flight paths, and ignoring variables like wind speed, direction, and actual airframe and engine maintenance records – EmeraldSky provides emissions results based on the seat in a specific class of service and sets a new standard in aircraft emissions measurement.
To learn more about Cirium’s comprehensive aviation analytics and detailed insights, visit www.cirium.com.
For Cirium media inquiries, please contact:
media@cirium.com
About Cirium
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.
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.
For more information, follow Cirium® on LinkedIn or visit cirium.com.
About Perk
Perk (formerly TravelPerk) is the intelligent platform for travel and spend management, built to eliminate the hidden, manual tasks that drain productivity and morale – Perk calls these ‘Shadow Work’. By automating travel bookings, expenses and invoice processing, the platform gives teams back time to focus on real work, with real impact. Trusted by more than 10,000 companies worldwide – including Wise, On Running, Breitling and Fabletics – Perk is tackling the 7 hours of lost productivity per employee each week, a $1.7 trillion problem revealed in The Cost of Shadow Work report. Founded in 2015, the global company combines innovation, control, and simplicity to transform how businesses work today and in the future. Perk’s mission is to power real work by removing the invisible tasks that slow teams down.
Visit www.perk.com for more information.
