Ukraine closed its airspace to Belarusian aircraft from 00:00 on 29 May.
Member of Parliament Oleksii Honcharenko announced this in his Telegram channel, citing his sources, the CFTS portal reports.
According to Honcharenko, Belarusian aircraft will not be able to fly through Ukraine even on transit.
Update
The Ukrainian Ministry of Infrastructure has announced that the government has tightened its "air sanctions" on Belarusian airlines.
According to the ministry, aircraft registered in the Republic of Belarus are banned from using Ukraine’s airspace from 00:00 on 29 May 2021.
"The restriction of flights in the Belarusian airspace and transit flights by Belarusian companies are necessary steps to ensure the safety of flights and passengers," the ministry said in a statement.
"A team from the Ministry of Infrastructure is currently working with the Ukrainian Ministry of Foreign Affairs of Ukraine to find operational solutions to attract new air transit traffic to Ukraine. We are counting on the support of our international partners," Minister of Infrastructure Oleksandr Kubrakov said.
As the CFTS portal reported, Ukraine banned flights to/from Belarus on 26 May. Ukrainian airlines and aircraft are prohibited from flying through Belarusian airspace. The State Border Service has also been ordered to stop registering passengers traveling from/to Belarus at customs posts at Ukrainian airports.
"The situation involving the forced landing of a Ryanair aircraft in Minsk is a violation of the Convention on International Civil Aviation. The decision of our government is aimed at ensuring the safety of flights and passengers," Prime Minister Denys Shmyhal said.