Jersey has followed the UK and EU in banning Russian aircraft from its airspace.
An official notice to flight operators - or NOTAM - was issued on Saturday by the Channel Islands' acting Director of Civil Aviation, Inez Bartolo.
The move brings Jersey's sanctions in line with those imposed by the UK, in response to Russia's invasion of Ukraine last week.
It means all planes owned, chartered or operated by anyone connected with Russia - or Russian-registered aircraft - are no longer allowed to fly above the island or over its territorial waters.
The States of Guernsey is yet to confirm whether the sanctions will be extended to the other Channel Islands too.

Haut Du Mont Trial: 'It could explode', jury hears 999 calls
Haut Du Mont Trial: Worker checking gas valves spent almost 'entire' time on his phone
Red Arrows still expected for Jersey Air Show
Haut Du Mont Trial: Gas works were 'sloppy, unsafe, and cut corners', allege prosecutors
26 Victoria Village homes get planning permission
Haut du Mont trial: Explosion 'an incident waiting to happen'
Jersey flights impacted by UK air traffic control issue
Engine fault sees private jet diverted to Guernsey Airport