"Our expectations are the most pessimistic… We expect predictable, absolutely logical mirror measures from the Russian Federation. It's clear that UIA, as the country's largest airline, is currently at major risk," Satska said.
On Friday, Ukrainian Prime Minister Arseniy Yatsenyuk's government said it had banned Russian airlines Aeroflot and Transaero from entering Ukrainian air space, effective October 25 as part of its anti-Russian sanctions.
Earlier in September, the Ukraine authorities included 25 Russian airlines and dozens of Russian banks, state TV channels, a number of companies, as well as individuals on its sanctions list.
Russian Transport Minister Maxim Sokolov said that Russia might take retaliatory measures by closing Russian airspace entirely to Ukraine after what Kiev had done.
