Cancellation of 94% of flights at Riyadh airport due to activity in Yemen.
Bloomberg reported:
The Yemen 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 the airline "Riyadh Air" to move its operations to an airport 400 kilometers away and to operate only limited flights until further notice.