Punctuality remained high with 87.1% of flights arriving within 15 minutes or earlier than their scheduled arrival time (STA). This high performance occurred as airlines that could operate flights saw many depart ahead of schedule, in turn arriving often earlier than their STA.
Analysis into the causes of delay shows the Other Weather grouping saw a sharp increase in its contribution to the average delay per flight. This increased weather delay contribution of 1 minute per flight was driven by airport weather events (high winds and snow) in January and February.
Another change directly related to COVID-19 came in relation to Governmental causes*, this group of delay codes being used to record delays due to mandatory security or immigration, customs and health related delays. The contribution of this cause to the average delay/flight doubled in Q1 2021.Contributing 1 minute per flight compared to 0.3 minutes in Q1 2021 and translating to an 18% share of generated primary delay minutes.
At the other end of the scale, ATFM en-route delay all but disappeared for airlines, falling to 0 minutes per flight from 0.8 in Q1 2020.
Learn more in the full report.