A US P-8A Poseidon aircraft dubbed the “submarine killer”, was deployed from RAF Mildenhall, in Suffolk, air traffic data shows.
A German P-3C Orion reportedly departed from Nordholz Naval Airbase, in Lower Saxony and a Danish CL-600 Challenger took off from Aalborg Air Base, in Nørresundby.
It is thought that the planes have been sent to a “task area” off the northern coast of Poland near Kaliningrad.
Kaliningrad, a Russian enclave annexed from Germany by the Soviet Union after World War 2, is situated along the Baltic Coast and has been called the “most dangerous place in Europe”.
There are reports Russia has been increasing its military arsenal in the small province.
Tensions in the Baltic region are boiling over after NATO accused a Russian jet of risking a collision with a civilian plane by attempting to avoid detection near European airspace.