CIRIUM
On-Time
Performance
Review 2025
Airlines & Airports
The world’s most trusted source of aviation analytics
Flight Emissions Review
Rank the top 20 airlines globally through a consistent benchmark for flight emissions. Highlights include:
- Global Airline Category Rankings
- Regional Performance
- Route-Level Improvements
- Operational Insights
On-Time Performance
See how airlines and airports rank for schedule reliability. Download the Monthly Reports and the Annual review.
The Appraiser of the Year
Cirium Ascend Consultancy has been named Appraiser of the Year 2026 in the Airline Economics Aviation 100 Global Leaders Awards.
Experience the power of AI designed to transform aviation analytics.
From flight schedules to emissions to aircraft lease rates.
WEBINAR:
WATCH ON-DEMAND
Future Flight: Shaping traveler experiences with aviation analytics
Unlock real-world insights and practical strategies to optimize operations and enhance the overall traveler experience. Moderated by Cirium’s Ellis Taylor, with a presentation from Joanna Lu, Cirium Ascend Consultancy guest speakers including Anthony Cicuttini. Brisbane Airport Corporation, Hamsin Nashrudin, Cirium and Nate Srinath Nudurupati, Inxee.
Cirium data
Deliver on sustainability promises with the most accurate aircraft and flight emissions data
EmeraldSky provides the most accurate aircraft and flight emissions data in aviation.
Cirium data coverage continues to grow
Cirium monitors more than 99% of commercial flights worldwide, supplying data and analytics to the majority of the top 100 airline groups. Combined with schedules for over 900 airlines and 99.5% coverage of scheduled passenger seats. As well as, over 300 datapoints on commercial aircraft globally and aircraft details for over 770 different aircraft types.
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Cirium Sky Warehouse
Advance strategic planning and post-operations analysis by integrating historical and forward-looking aviation data into chosen business systems.
Cirium Sky Emissions API
Get airline schedules with flight-based emissions data delivered through an easy to manage API.
THOUGHT CLOUD
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