British Airways and Lufthansa are also cutting flights to Budapest

According to a British Airways statement, around 8 percent of the originally planned number of flights during the winter period, or 10,000 flights, had to be canceled in advance. The airline has tried to reduce capacity on short-haul routes where there are several flights a day so that passengers can easily rebook their flights.

A similar move is also being made by Lufthansa, which is cutting the number of flights at its hubs in Frankfurt and Munich in advance to stabilize its winter schedules. Some long-haul routes may also be affected by the capacity cuts, but Lufthansa is trying to cut capacity mainly on its domestic and European routes, where it can offer more rebooking alternatives.

Scandinavian Airlines said that about 4 percent of its scheduled flights for September and October, a total of 1,700 flights, have been canceled due to the 15-day pilot strike in July. 

Wizz Air announced the cancellation of its route between the United Arab Emirates and Russia in early August. Now, the airline has indefinitely postponed flights between Abu Dhabi and Moscow, citing difficulties in industry supply chains.