Common Questions

What is Cirium?

Cirium is a London-based aviation data and analytics company, part of RELX Group, that tracks commercial flight schedules, cancellations, and on-time performance globally. Its data is used by airlines, insurers, and governments to monitor aviation disruption.Source: Cirium

How many flights were cancelled in the Middle East during the Iran conflict?

Cirium reported 13,000 of 32,000 scheduled regional flights cancelled in the first four days of the Iran conflict, representing 40% of all Middle East air traffic. That was up nearly tenfold from 1,560 cancellations reported 24 hours earlier.Source: Cirium

What is the difference between Cirium and FlightRadar24?

Cirium specialises in schedule, cancellation, and historical fleet analytics sold to airlines, insurers, and governments. FlightRadar24 is a consumer-facing real-time flight tracker. Cirium data underlies industry and policy decisions; FlightRadar24 serves public situational awareness.Source: Cirium

Background

Cirium is an aviation data and analytics company headquartered in London, part of the RELX Group portfolio. It compiles real-time and historical data on commercial flight schedules, cancellations, on-time performance, and aircraft movements drawn from airline and airport feeds worldwide, supplying figures to media, insurers, governments, and the travel industry.

Cirium became the authoritative source for quantifying the airspace crisis triggered by the Iran conflict. Its data showed that 13,000 of 32,000 scheduled regional flights had been cancelled across the Middle East since the conflict began, representing 40% of all regional air traffic, a near-tenfold rise in 24 hours . That surge coincided with the indefinite closure of Ben Gurion Airport and the partial reopening of UAE airports as airlines executed wholesale regional withdrawal .

The tenfold cancellation surge in a single day revealed that airlines had crossed from tactical route adjustments to systemic withdrawal, driven by insurance market collapse rather than direct threat assessments. Cirium's figures gave policymakers and carriers a shared quantitative baseline for a fast-moving crisis, illustrating how data intermediaries shape collective responses to conflict.