Cancellation of 94% of flights at Riyadh airport due to activity in Yemen Bloomberg reported that the Yemeni operation caused an almost complete paralysis of air traffic in the capital of Saudi Arabia, and between October 10 and 27, 94% of flights departing from Riyadh airport were canceled. This operation forced Riyadh Air to transfer its operations to an airport 400 kilometers away and to operate only limited flights until further notice.