The budget airline has three aircraft located in Kyiv and one in Lviv in the west of the country.

Jozsef Varadi, Wizz Air chief executive, said help had been given to staff to move to places of safety.

“I am incredibly proud of how our people have stepped up and worked around the clock to try to provide the best support at this difficult time," he said.

"Many colleagues are volunteering, offering a place to stay and have donated money to the Wizz Employee Solidarity Fund to help support our Ukrainian colleagues and their families.

“We will offer already evacuated colleagues continued support and the choice to get employment elsewhere in the network, should they wish to.”

Wizz Air has offered refugees 100,000 free seats on all short-haul flights departing from Ukraine’s border countries, plus €29.99 rescue flights.

With the closure of Ukrainian, Moldovan and Russian airspace, Wizz has suspended all flights to and from Ukraine and Russia while operating Moldova flights from Iasi in Romania.

It told investors the impact during March would be 7% of its network. In February, Wizz Air carried 1.9 million passengers, with a load factor of 91%, a 285% increase compared with February 2021.