Moldova, southwest of Ukraine, also halted flights, while Belarus to the north said civilian flights could no longer fly over part of its territory after Russian President Vladimir Putin authorized the dawn operation.
The European Union Aviation Safety Agency (EASA) said Ukraine’s skies and airspace in Russia and Belarus within 100 nautical miles of borders with Ukraine could pose risks.
“In particular, there is a risk of both intentional targeting and misidentification of civil aircraft,” the agency said.
“The presence and possible use of a wide range of ground and airborne warfare systems poses a high risk for civil flights operating at all altitudes and flight levels.”
It later issued an update on a broader area of Russian airspace, advising airlines to “exercise caution” when flying in air traffic regions controlled from Moscow or Rostov-on-Don.
The U.S. Federal Aviation Administration expanded an area in or near Ukraine where U.S. airlines cannot operate.
The aviation industry has taken heightened notice of the risks conflicts pose to civil aviation since Malaysia Airlines flight MH17 was shot down over eastern Ukraine in 2014.
EASA said Russia’s defense ministry had sent Ukraine an urgent message warning of a high risk to flight safety due to the use of weapons and military equipment, and asked Ukraine’s air traffic control to stop flights.
Websites, which before the escalation had shown multiple intelligence-gathering flights over or near Ukraine as the West showcased…
