It revealed the number of weekend flight cancellations across UK airports.
Heathrow Airport had the highest number of Saturday cancellations, Cirium said, with 46 outbound departures and 48 inbound flights cancelled.
Overall, there were 126 flights cancelled out of UK airports on Saturday and a further 118 arriving flights were grounded.
It also says more than 200 flights in and out of UK airports were cancelled for Sunday, representing about 5% of all scheduled services.
Tags: Heathrow Airport, Storm Bert, aviation, Cirium
