Which airlines are cancelling flights to Ukraine?
But it insists air corridors are still open and flying to the East European country is safe.
Germany's airline Lufthansa said it was halting flights to Ukraine from Monday, joining KLM which has already done so. Lufthansa's suspension is expected to remain in place until the end of February.
“The safety of our passengers and crew members is our top priority at all times,” a spokesperson from the German airline said.
Scandinavian company SAS also suspended weekly flights while Air France has decided to cancel Tuesday flights between Paris and Kyiv as a "precautionary measure".
Ryanair, the biggest airline to fly between Europe and Ukraine, said last week that it plans to continue flying to the country.
The flight suspensions come as UK Prime Minister Boris Johnson warned on Sunday that Russia is planning "the biggest war in Europe since 1945".
"The current cancellation of flights by a number of foreign airlines is dictated solely by the information aggravation of the situation, and not by real changes in flight safety," Infrastructure Minister Oleksander Kubrakov told a news briefing.
The current cancellation of flights by a number of foreign airlines is dictated solely by the information aggravation of the situation, and not by real changes in flight safety.
He did not name the airlines and said that "the state is working to replace cancelled flights".
Kubrakov said Ukraine International Airlines (UIA) had already opened ticket sales and increased the capacity of aircraft on additional flights from Kyiv to Munich and Geneva, which Lufthansa was unable to operate.
UIA said 13 planes were still active. The airline has a total of 26 aircraft in its fleet but nine of those left the country last week for storage sites in Europe - including seven on 14 February alone, according to Flightradar24 tracking data.
The exodus came after two Ukrainian airlines disclosed problems in securing insurance for some of their flights as Russia masses a huge military force on its border.
Russia and Ukraine both hinted at fresh diplomatic efforts to avoid conflict on Monday, but Ukraine's biggest airline said its insurers had already terminated cover for at least some of its aircraft on flights inside Ukrainian airspace.
One insurance firm denied airlines were pulling out due to a lack of cover, however.
"We continue to support many airlines that fly into the region," said Bruce Carman,chief underwriting officer at Hive Aero in London.
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