Cirium

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. Its schedule and cancellation datasets are a standard reference point whenever regional airspace disruption needs a quantified baseline, whether that disruption is weather, a carrier collapse, or a war.

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 mid-June Islamabad Ceasefire briefly stabilised Gulf air traffic, but its collapse in late June and the renewed strikes on Kuwaiti and Jordanian infrastructure through 18-20 July pushed disruption back toward the pattern Cirium first quantified in March. The US State Department widened its worldwide travel advisory on 18 July, citing the same risk of further flight cancellations and periodic airspace closures that Cirium's data had been tracking since the war's opening days .