The airspace of Ukraine was closed due to a high risk to safety and the airspace of Russia and Belarus was warned of military actions. Multiple airports and bases were attacked by Russian.
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Users should avoid an area of at least 100NM within the borders of Belarus and the Russian Federation after the air traffic services were suspended in the country. The airspace which was being used for overflights had already been emptied.

“In particular, there is a risk of both intentional targeting and misidentification of civil aircraft. The presence and possible use of a wide range of ground and airborne warfare systems pose a high risk for civil flights operating at all altitudes and flight levels.”
the agency said in a conflict zone bulletin.

On February 14th, 2015, the airline sent 5 Boeing 737-800s to storage in Spain due to the suspension of regular and charter flights.
The airline sent its entire fleet of jets to the airport because of insurance issues.
Actual map of #russianinvasion in Ukraine. Multiple Ukrainian airports among them Kiev-Borispol (UKBB), Kharkiv (UKHH), Ivanovo have been attacked. Many runways have blocked by vehicles to prevent invasion troops from landing. Russian military operations are ongoing. pic.twitter.com/D89tFa5GSE
— JACDEC (@JacdecNew) February 24, 2022
Russian missile and bomb strikes have hit airports in multiple cities, including the capital of Ukraine, according to the General Staff.