Cirium

What Cirium does

Cirium is the aviation analytics division of RELX plc, operating as a tradename of LexisNexis Risk Solutions and headquartered in London with regional presence in Dubai. The company provides data, analytics, and advisory products to airlines, airports, aviation finance institutions, insurers, MROs, OEMs, and government agencies, covering 99%+ of commercial flights and 99.5% of scheduled passenger seats globally. Its platform spans core aviation datasets (fleet, schedules, flight status, tracking, emissions, fares, NOTAMs) layered with analytics modules including EmeraldSky emissions reporting, the Cirium Sky cloud/API/streaming stack, the Ascend suite (Fleets Analyzer, Values Analyzer, Asset Watch, Ground Events, Ascend Profiles, Dashboard), Diio schedule and booking analytics, Fleet Forecast, and the On-Time Performance program, plus the award-winning Cirium Ascend Consultancy.

The underlying technology combines internally curated aviation datasets with satellite-based ADS-B flight tracking through the Aireon partnership, an event-driven Sky Stream feed, a Sky Warehouse cloud data platform, and ML-driven predictive analytics for maintenance, fleet forecasting, route optimization, and emissions. Cirium monetizes primarily through enterprise subscriptions to its data and analytics platform, API and data cloud licensing, consultancy engagements, and association-level data partnerships.

The go-to-market is enterprise B2B via direct field sales, augmented by strategic technology integrations (Awery ERP, Perk travel platform) and industry association partnerships (AFRAA). Strategic customers include Brisbane Airport, Perk, Awery, and AFRAA member airlines, with the company supplying data and analytics to the majority of the top 100 airline groups. Historical acquisitions of Snowflake Software (2020) and Migacore Technologies (2021) indicate an ongoing consolidation strategy in aviation data infrastructure.

Name

Cirium

Legal name

Cirium (a tradename of LexisNexis Risk Solutions, a RELX business)

Website

https://cirium.com

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

251–500 employees

Short description

Cirium is an aviation analytics subsidiary of RELX plc that provides data, analytics, and consultancy to airlines, airports, aviation finance, insurers, MROs, OEMs, and governments, covering 99%+ of commercial flights via its Cirium Sky platform, EmeraldSky emissions, Ascend fleet/valuation suite, and AI-assisted analytics.

Ownership category

akta.pro rank

Product category

Aviation Data Analytics

NAICS

Software Publishers (51321)

akta.pro primary industry

Fare Management, Pricing & Shopping Engines (ATPCO/Offer) (THABAJAE)

akta.pro secondary industries

Audit-Ready Controls, Assurance & Compliance Workflow Tools (CSRD/SEC/ISSB) (EUABAEAG), Customer Data, CRM & Personalization (THABAKAB)

Keywords

• Aviation data analytics
• Flight tracking software
• Aircraft valuation services
• Airline scheduling data
• Aviation emissions tracking

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales

Revenue model

1. Aviation Data and Analytics Subscriptions: Subscription-based access to Cirium's comprehensive aviation data platform including schedules, fleet data, flight tracking, emissions data, and analytics tools. Customers access data through web applications, APIs, and data cloud services.
2. Enterprise Data Platform Licensing: Enterprise agreements for cloud-based analytics solutions like Cirium Sky Warehouse, targeting airports and large organizations requiring deep data integration
3. Strategic Data Partnerships: Strategic partnerships with industry associations like AFRAA providing access to Cirium's scheduling, fleet, and market intelligence tools for member airlines
4. Consultancy Services: Cirium Ascend Consultancy provides valuations, bespoke analyses, and expert aviation market commentary. The consultancy has over 250 years of combined appraiser experience and provides thousands of independent valuations annually.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Cirium provides comprehensive aviation data and analytics covering 99%+ of commercial flights worldwide, including fleet data, schedules, flight status, tracking, emissions, and aircraft valuations. The company delivers this through a data platform (Cirium Core Data), modular analytics products (EmeraldSky, Fleets Analyzer, Values Analyzer, Asset Watch, Ground Events, Ascend Profiles), cloud and API products (Cirium Sky API, Sky Stream, Sky Warehouse), and expert Cirium Ascend Consultancy services for airlines, airports, lessors, financiers, insurers, governments, and travel platforms.

Product overview

Cirium is an aviation analytics company offering a comprehensive platform-plus-modules architecture providing data, analytics, and intelligence across the aviation industry. The core Cirium Core Data platform supplies industry-leading aviation datasets covering 99%+ of commercial flights with 300+ attributes per aircraft. Key modules include: EmeraldSky for emissions tracking and sustainability; Cirium Sky (API, Stream, Warehouse) for data integration and real-time analytics; Ascend suite products (Fleets Analyzer, Values Analyzer, Asset Watch, Ground Events, Ascend Profiles, Dashboard) for fleet, valuation, and operational analysis; Diio tools for route and booking analytics; Cirium Ascend Consultancy for valuations and advisory; and Cirium Fleet Forecast for 20-year market outlook. The platform serves airlines, airports, aviation finance, insurers, MROs, OEMs, and governments with on-demand API access, cloud data warehouse, and configurable analytics tools.

Differentiator

Problem solved

Functional benefit

Brands

• EmeraldSky: Aircraft and flight emissions data and analytics solution providing CO2 tracking and sustainability reporting for airlines and corporate travel
• Cirium Sky (Sky Warehouse, Sky Stream, Sky API)
• Cirium Ascend (Ascend Consultancy, Ascend Profiles, Fleets Analyzer, Values Analyzer, Asset Watch, Ground Events)
• Cirium OTP (On-Time Performance)
• Diio

Products and services

• Cirium Core Data Industry-leading aviation data platform providing datasets including aircraft fleet, flight status and tracking, schedules, routes, connections, passenger traffic, fares, emissions, and aeronautical data for 99%+ of commercial flights worldwide.
• EmeraldSky Aviation sustainability solution providing the most accurate aircraft and flight emissions data, enabling airlines and travel platforms to track, benchmark, and report CO2 emissions; methodology is ISAE 3000 assured by PwC and accredited by Rocky Mountain Institute.
• Cirium Sky API Programmatic access to Cirium's aviation data including flight tracking, CO2 emissions, weather, fleet inventories, and NOTAMs through REST and streaming APIs, with the Emissions endpoint providing predicted emissions at booking time.
• Cirium Sky Stream Event-driven real-time aviation data stream providing gapless global coverage of flights using ATS-grade satellite-based ADS-B flight tracking combined with flight status, schedules, and fleet data.
• Cirium Sky Warehouse Cloud-based aviation data warehouse integrating historical and forward-looking aviation data into business systems for strategic planning and post-operations analysis.
• Fleets Analyzer Fleet analysis solution providing 360-degree view of aircraft with data on over 450,000 unique aircraft records across 770+ aircraft types, including fuel burn, CO2 emissions, satellite-based tracking, and aircraft utilization metrics.
• Values Analyzer Aircraft valuation tool analyzing values, risk and liquidity of aircraft assets using the industry's largest team of ISTAT and ASA Certified Appraisers, providing values on over 500,000 aviation assets annually with data going back to 1965.
• Asset Watch Aircraft portfolio monitoring tool tracking flight and ground activity with daily updated analytics, combining tracked utilization data with satellite flight tracking to identify exact aircraft locations and CO2 emissions by portfolio.
• Ground Events Maintenance event prediction tool analyzing historical aircraft ground stays and predicting future maintenance events including C-checks, heavy checks, paint work, and retrofits with approximately 35,000 labeled ground events.
• Diio Advance Bookings Diio tool for analyzing advance booking patterns and travel demand forecasting, part of the airline schedule and booking analytics suite.
• Ascend Profiles Visual descriptive analytics platform providing aircraft intelligence by airline or lessor with fleet summaries, premium news, and Airline Routes tool showing 12-month year-over-year flight routes based on satellite tracking data.
• Cirium Dashboard Aviation news, data analysis and insights platform with over 300,000 news stories since January 1995, airline company information, fleet data for 1,700+ airlines, and airport/MRO organizational data for 8,700+ companies.
• Cirium Ascend Consultancy Aircraft appraisal and consultancy service named Appraiser of the Year 2026 (11th title in 15 years), providing valuations, market analysis, and expert commentary through the industry's largest certified appraiser team with 250+ years of combined experience.
• Cirium Fleet Forecast Independent 20-year outlook of the global commercial passenger and freighter aircraft market providing annual fleet, delivery, retirement, and freight conversion forecasts by type, series, and region.
• Cirium On-Time Performance Gold standard OTP measurement program ranking over 1.8 million flights globally, providing monthly and annual reports on airline and airport schedule reliability with independently assured methodology.

Quantifiable outcome

• Cirium monitors more than 99% of commercial flights worldwide
• +3 more outcomes

Named customers3 records

Segments1 record

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability6 records

Feature12 records

Partnerships

Five partnerships are on record, tiered core.

• PerkcoreStrategic or Co-development Partner · 4 December 2025Cirium announced a landmark deal with Perk, a global travel management platform, to integrate EmeraldSky flight emissions tracking data into Perk's platform. Through this partnership, Perk's 10,000+ customer companies gain access to precise, science-based CO2 tracking at point of flight search and post-travel, supporting sustainability reporting and regulatory compliance. The deal strengthens Perk's position as a sustainability-focused platform and represents Cirium's expansion of its emissions data services across the corporate travel sector.
• Awery Aviation SoftwarecoreTechnology or Integration · 1 December 2025Awery Aviation Software and Cirium entered a strategic partnership to integrate Cirium's aviation data and analytics into Awery's enterprise resource planning platform. The integration allows Awery ERP users to access up-to-date flight schedules, fleet utilization data, historical performance trends, and standardized cost analysis tools directly within the platform. The partnership helps airline professionals make more accurate assessments and optimize performance across their operations.
• African Airlines Association (AFRAA)coreTechnology or Integration · 14 May 2025Cirium announced a strategic data partnership with the African Airlines Association (AFRAA) to enhance analytical frameworks for the African air transport market and support sector growth. The collaboration provides AFRAA member airlines access to Cirium's scheduling, fleet, and market intelligence tools, including Diio SRS Analyzer and Ascend Fleets Analyzer. The partnership aligns with AFRAA's 2025 strategy to improve connectivity, reduce operational costs, boost sustainability, and drive digital transformation across Africa.
• Brisbane AirportcoreTechnology or Integration · 17 March 2025Brisbane Airport partnered with Cirium to integrate the Cirium Sky Warehouse data platform into its modernization efforts, becoming one of the first airports to adopt this cloud-based analytics solution. The integration supports capacity planning, resource allocation, and operations analysis as part of Brisbane Airport's Future BNE transformation program. The airport handles nearly 25 million passengers annually and is undertaking 150 projects over 10 years ahead of hosting the 2032 Olympics.
• AireoncoreTechnology or Integration · 17 May 2022Cirium partnered with Aireon, the leader in space-based aircraft tracking, to integrate Aireon's complete, global, real-time flight data with Cirium's unique combination of fleet, flight status and airline schedules data. This partnership enables nearly 100% coverage of commercial aircraft globally and powers the Integrated Flight Feed with gapless global coverage of all modern aircraft equipped with ADS-B.

Scale indicators14 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• FlightAware: FlightAware (now under RELX alongside Cirium) provides ADS-B flight tracking and flight status data globally — historically a direct rival whose capabilities have been consolidated within the same parent. Closest functional peer for Sky Stream and Aireon-powered products.
• OAG: OAG is the most direct competitor to Cirium in aviation schedules, flight status, and operational data analytics, with global airline coverage and historical datasets reaching back decades — directly overlapping Cirium Core Data and Diio products.
• Flightradar24: Flightradar24 offers real-time flight tracking using ADS-B and multilateration data, with both consumer-facing and enterprise data feeds that compete with Cirium's flight status and tracking offerings.
• Infare: Infare provides airfare benchmarking, pricing intelligence, and market data for airlines and travel suppliers — competing directly with Cirium's Diio fare analytics and advance bookings tools.

Broad incumbents

• SITA: SITA is a broad air-transport IT incumbent serving airlines, airports, and governments with operational, passenger, and communication technology — overlapping Cirium's airport and airline operations analytics from a wider systems-integration footprint.
• IBS Software: IBS Software provides airline operations and maintenance platforms (iFlight, iMRO) used by major carriers — a comparable enterprise software footprint that competes with Cirium's airline operations, MRO, and predictive maintenance analytics.
• Sabre Corporation: Sabre is a major GDS and airline/airport IT provider whose analytics, operations, and distribution products intersect Cirium's revenue management, schedules, and fare data offerings.
• Amadeus IT Group: Amadeus is a global GDS and travel technology provider whose Altéa PSS and airline IT portfolio overlap with Cirium's airline commercial and operational analytics for travel distribution use cases.

Emerging players

• Hopper: Hopper operates a travel pricing/data platform with predictive analytics for fares and demand — overlapping Diio's advance bookings and fare prediction from a consumer/travel-agency angle rather than airline-side.
• Aviationstack (by RapidAPI): Aviationstack offers developer-friendly aviation data APIs (flights, airports, airlines) at lower price points — a lower-end competitor for the Cirium Sky API among cost-sensitive developer customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/cirium
• LinkedInlinkedin.com/company/13052046
• Xx.com/cirium

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cirium