A Russian reconnaissance aircraft is suspected of violating Finnish airspace over the Gulf of Finland on 20 August, in an incident that Finnish authorities say lasted about three minutes and reached almost nine kilometres inside the country’s airspace.
The Finnish Ministry of Defence first reported the suspected violation on Thursday evening, saying that a Russian aircraft may have entered Finnish territory in the western part of the Gulf of Finland during the afternoon. Defence Minister (puolustusministeri) Antti Häkkänen said that “every suspected territorial violation is taken seriously” and that an investigation was underway.
The Russian aircraft entered almost nine kilometres into Finnish airspace
Further details released by the Finnish Border Guard (Rajavartiolaitos) on Friday identified the aircraft as a Russian IL-20 reconnaissance plane.
According to information reported by Yle, the suspected Russian airspace violation occurred south of Utö, an island in Finland’s southwestern archipelago.
The aircraft is believed to have remained inside Finnish airspace for approximately three minutes. At the deepest point of the suspected incursion, it was around 4.7 nautical miles, or roughly 8.7 kilometres, inside Finnish territory.
The Border Guard has opened a preliminary investigation and said it will release further information once the investigation has progressed. Finnish authorities have not so far announced what caused the aircraft to enter Finnish airspace or provided details about the flight’s intended route.
Finland has investigated other Russian airspace violations
The incident follows other suspected crossings of Finnish airspace by Russian military aircraft.
In May 2026, Finnish authorities investigated a Russian military aircraft that entered Finnish airspace near Porkkala, west of Helsinki. In that case, the aircraft was reported to have deviated from its route while avoiding a thunderstorm.
Russian military aircraft were also suspected of violating Finnish airspace in 2025. One of those incidents led Finland to summon the Russian ambassador for discussions.
The latest case is different in one significant respect: the aircraft identified by the Border Guard is an IL-20 reconnaissance aircraft, a military platform designed for intelligence-gathering missions.
The incident comes on NATO’s northeastern flank
Finland has been a member of NATO since 2023, making the monitoring of its eastern border and the Gulf of Finland part of the alliance’s northeastern security environment.
The Gulf is also a particularly closely monitored area because Finland and Estonia face each other across the water, while Russia’s St Petersburg region lies further east.
For now, Finnish authorities continue to describe the event as a suspected airspace violation rather than a confirmed breach. The Border Guard’s investigation will determine the circumstances of the flight and whether the Russian aircraft formally violated Finnish territorial sovereignty.
The findings could also clarify whether the incident was the result of navigation or operational circumstances, or whether further diplomatic or military responses from Finland will follow.
