EUROCONTROL Forecasts European Air Traffic Above 37,000 Flights on Fridays in September 2026
Why It MattersThe forecast shows how network-wide traffic planning now hinges on identifying specific overloaded control centres and airports well ahead of peak days rather than managing capacity reactively.
What happened
EUROCONTROL's Network Management Directorate has published Edition 267 of the European Network Operations Plan (NOP) Rolling Seasonal Plan, valid from 28 August 2026 and covering an eight-week outlook from 31 August to 25 October 2026. The plan forecasts traffic exceeding 37,000 flights on Fridays in September, before a progressive decline through October.
Weekly daily average forecasts show 36,589 flights in the week of 31 August–6 September 2026, up 3.6% year-on-year, declining to 33,119 flights in the week of 19–25 October 2026, up 2.6% year-on-year. All eight weeks in the outlook show growth of between 2.6% and 4.1% compared with the same period in 2025.
On en-route capacity, EUROCONTROL states that maximum opening schemes and/or specific Air Traffic Flow and Capacity Management (ATFCM) measures are required to handle expected overload at Area Control Centres including Wien, BH, Zagreb, Nicosia, Maastricht, Bordeaux, Brest, Marseille, Reims, Karlsruhe, Athinai, Makedonia, Skopje, Lisboa, Beograd, Ljubljana, Barcelona, Madrid, Sevilla, Zürich, London and Prestwick, with pressure expected to be most acute on Fridays and weekends. No capacity issues are foreseen at the remaining ACCs, though ANSPs are advised to maintain a buffer.
Summer 2026 network traffic distribution measures have been applied and agreed with operational stakeholders to address capacity bottlenecks, reduce delays and stabilise the network while maintaining horizontal and vertical flight efficiency. On the airport side, overall operational performance remains good, though tourist-heavy airports in Greece and Spain are expected to remain busy into October and are subject to Demand and Capacity Balancing monitoring. The Rolling Seasonal Plan is published weekly on the NM Network Operations Portal, and the full five-year NOP covering 2026/2027–2030 was approved and published in April 2026.
Industry impact & what to watch
This kind of rolling forecast belongs to the broader pattern of network operators publishing named-facility risk ahead of peak demand rather than issuing generic traffic warnings. Naming specific Area Control Centres and flagging Fridays and weekends as the acute windows gives airlines, ANSPs and airports a concrete basis for pre-tactical planning instead of a blanket seasonal caution.
The European network manages capacity through this layered mechanism: seasonal forecasts identify where and when overload is likely, ANSPs are asked to open maximum sector configurations or apply flow measures at those points, and airports flagged for Demand and Capacity Balancing monitoring coordinate separately with the NM Airport Function. Year-on-year growth in every one of the eight forecast weeks means the distribution measures agreed for summer 2026 remain load-bearing into the autumn shoulder season rather than being wound down.
What happens at the named ACCs on the Fridays through September — whether the maximum opening schemes hold delays within normal bounds — will be the practical test of the plan. Because the Rolling Seasonal Plan is republished weekly on the NM Network Operations Portal, the next editions will show whether the forecast overload at centres such as Maastricht, Zürich and the Iberian ACCs materialises as predicted or requires additional measures.
