For Week 31 (28 July – 3 August 2025):
Traffic: 35,421 daily flights, slightly below the previous week, +4% vs 2024, and 101% of pre-pandemic 2019 levels.
ATFM delays: Averaged 4.7 minutes per flight — a 17% decrease from the previous week, and 20% lower than in 2024. A total of 65,982 flights were delayed by air traffic flow management (ATFM) restrictions, an average of 9,426 flights a day and 27% of all flights. There were two days in Week 31, Friday 1 and Saturday 2, with ATFM delays above 200,000 minutes (237,957 and 209,141 respectively).
Arrival punctuality: Up 3.1 percentage points vs Week 30 to 68% and better than last year by 5.3 percentage points.
Network hot spots:
- France (28% of all delays in the network): Affected by on-going capacity and staffing issues, compounded by adverse weather.
- Austria (12% of all delays in the network): Affected mostly by capacity issues related to high demand, weather and temporary staffing problems.
- Spain (11% of all delays in the network): Affected by capacity issues related to high demand.
London Airspace, UK - on Wednesday 30 July, London Area Control Centre experienced a technical issue causing a total of 35,970 minutes of delay in the Network with 64 flights diverting that were inbound to airports in UK and Ireland.
Network Operations Plan (NOP) delivery:
- With 3.9% year-to-date traffic growth, en-route ATFM delay so far is 23% better than in 2024, with good delivery by all air navigation service providers (ANSPs) in South-East Europe, Central Europe, Italy and Switzerland.
- Most ANSPs are delivering the agreed capacity.
- Further improvements are being seen to delays in Germany, compared to the NOP.
- However, Marseille ACC did not fully provide the capacity planned in the NOP (generating 138K delay minutes) and Vienna ACC experienced some staffing issues limiting the delivery of the agreed capacity (generating 112k delay minutes).
Actions to be taken: Reims ACC will need to revise their plans to align with the NOP for the upcoming weeks and Vienna ACC will need to deliver against the agreed NOP and rolling NOP opening schemes. Implementation of capacity management scenarios by NMOC will be further amplified and, in this context, the proactive support of all ANSPs will be further requested.
Weather: Convective weather affected significant parts of the network almost notably on 1st and 2nd August. The scenarios pre-agreed between the ANSPs and the Network Manager (NM), moving traffic away from areas of forecast convective weather saved 74k minutes of delay across the week, 21% of the total weather delay in Week 31.