Period Area Update rate Last update Source(s) Data
Jan-Mar EUROCONTROL area Quarterly 28-April-2017 NM
Please note that software release 20.0 of the Network Manager on 04 April 2016 introduced a change to improve the accuracy of the ATFM delay calculation for operational purposes. For more information on the change in methodology click here.

En-route ATFM delay per flight


Total en-route delay by reported ATFM delay cause

In the 1st Quarter 2017, total en-route ATFM delays in the EUROCONTROL area decreased by 42% compared to the same period in 2015. As a result, average en-route ATFM delay per flight decreased from 0.67 in Q1 2015 to 0.38 in Q1 2016.

The main contributors for the en-route ATFM delay reduction in Q1 2017 were substantial reductions in ATC disruptions/industrial actions (mainly France) and events which also include delays due to ATC system upgrades (ERATO implementation in France in 2016).

Share of controlled flights delayed by en-route ATFM regulations (%)

Overall, 95.5% of the controlled flights in the EUROCONTROL area were not affected by ATFM delays in the first Quarter 2017. Compared to the first quarter in 2016, the share of flights affected by en-route ATFM delays decreased by 0.8 percent points to 2.0%. At the same time, the share of flights affected by airport ATFM delays decreased from 2.8% in Q1 2016 to 2.6% in Q1 2017.

En-route ATFM delay by ANSP


In Q1 2017, average en-route delay per flight was highest in France (DSNA), followed by Portugal (Continental), and Cyprus.

Despite the increase in traffic in Q1 2017, horizontal flight efficiency improved compared to the same period last year. The efficiency of actual flight trajectories increased from 95.4% in Q1 2016 to 95.6% in Q1 2017.