Europe-based carriers experienced a 14 percent increase in flight delays between the period of June 2018 to May 2019 and the period of June 2017 and May 2018, according to OAG. Below is a chart of on-time performances for airlines that have flown at least 600 times per month and for which OAG has tracked at least 80 percent of the scheduled flights between June 2018 and May 2019.
