Kenya's main international airport was experiencing flight delays on Monday due to a strike by members of the aviation union, operator Kenya Airports Authority said.
Nairobi's Jomo Kenyatta International Airport is one of the continent's major air transport hubs.
The labour dispute between the aviation workers' union and the civil aviation authority is over grievances including the failure to conclude a collective bargaining agreement.
Last week, the aviation workers' union issued a seven-day strike notice, after which the Kenya Civil Aviation Authority approached the courts to try to block the strike.
"This is a complete strike action. I have not been served with any court order halting the strike," Moss Ndiema, the union's secretary general, told Reuters by phone.
Kenya Airways and Tanzania's Precision Air said air traffic control delays were affecting departures and arrivals at Jomo Kenyatta International Airport.
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