Finland’s Transport and Communications Agency Traficom has issued an Aeronautical Information Publication (AIP) Supplement announcing that large sections of Finnish airspace will be reserved for the tri-service military exercise “Vihuri 26” from 07:00 UTC on 23 February until 14:00 UTC on 26 February 2026. The notice designates a series of Temporary Reserved Airspace (TRA) blocks and matching Flight-plan Buffer Zones (FBZ) covering parts of Southwest and Western Finland in the Helsinki Flight Information Region (FIR). Commercial flights that are not part of the exercise will be barred from entering the activated blocks while they are “hot”; the Network Manager will reject any IFR flight plan that infringes an FBZ, forcing airlines to file longer routings or different flight levels. Fintraffic ANS, which manages Finnish air navigation, says the restrictions are necessary to protect high-speed low-level fighter manoeuvres and complex air-to-air refuelling sorties. The agency’s daily Airspace Use Plan (AUP) will publish the exact time-windows each morning, but the AIP Supplement already warns airlines that delays and level-capping may occur, especially for Finnair and Scandinavian SAS services transiting the PIPO South and PIPO East corridors. Exemptions apply only to state flights such as border-guard helicopters, medical evacuations and aircraft operating under international obligations. For business travellers the practical impact is two-fold. First, flights into Turku, Pori and Vaasa may arrive at atypical altitudes, prolonging descent times and inflight duty periods for crews. Second, point-to-point private and corporate jet movements will need fresh flight-plan validation, increasing the risk of slot loss out of Helsinki-Vantaa. Travel managers should monitor the Eurocontrol Network Operations Portal (NOP) for evolving flow measures and build extra connection time—at least one hour—into itineraries during the exercise window. The episode underlines how defence activity is now a recurring variable in Nordic mobility planning following Finland’s 2024 NATO accession. Companies with regular shuttle flights should review standard-operating-procedures for last-minute airspace closures and ensure that their Finnish ground-handling contracts include priority re-filing services. In the medium term, the AIP notice hints that temporary airspace segregation could become semi-permanent as Finland aligns military training with its new alliance obligations. Aviation stakeholders therefore face a more crowded regulatory calendar, making proactive regulatory tracking essential for cost control and traveller confidence.
