Kenya Airports Authority did not give a reason for the closure but it is likely to do with the arrival of US First Lady Melania Trump.
Washington has been gripped by high drama and emotion for days, from the testimony of Christine Blasey Ford - who accused Kavanaugh of sexual assault - to protests against his nomination.
The first lady also would not say if she believed Ford's allegations against Kavanaugh.
As for whether she's ever told him to put his phone down, she said, "yes", with a laugh. "Sometimes he listens and sometimes he doesn't, but I have my own voice and my opinions and it's very important for me that I express what I feel".
What to know about Trump’s nationwide test alert
A message box popped up on screens, informing: "THIS IS A TEST of the National Wireless Emergency Alert System . The test was originally scheduled for September but was postponed as FEMA responded to Hurricane Florence.
She was welcomed by Egyptian First Lady Intissar Amer al-Sisi, an observant Muslim who wore an ankle-length blue dress and matching headscarf covering her hair.
His confirmation would give the USA president a clear win in his drive to cement conservative dominance of the high court.
Quickly, people across the globe slammed her because the hat was similar to the one used by colonial masters in Kenya. She met earlier Saturday with Egyptian president Abdel-Fattah El-Sisi.
Trump, who has also visited Ghana and Malawi, kicked off her day with a stop at an elephant orphanage, where she helped bottle feed an elephant and patted another, clearly having a good time.
The first Lady snaps a selfie while being guided around the park.
China used tiny chips on US computers to steal secrets
Super Micro Computer may have been the prime target in a hack allegedly carried out by the Chinese military. In all, 17 people confirmed the manipulation of Supermicro's hardware and other elements of the attacks.
Melania said she never heard her husband "saying those comments" and 'nobody discussed that with me'.
She wore slacks and a tie as she stepped off the plane in Cairo, where she proceeded to the presidential palace, an ornate cream stone building with arabesque designs.
At the meeting which lasted for almost an hour, Sisi sat in the middle, with Trump on one side and his wife on the other.
Standing in front of the Sphinx, Mrs. Trump said she makes her opinions clear with her husband.
Senate moves to final vote on controversial Trump's Supreme Court pick Kavanaugh
If she voted yes, the pledges would fund the campaign of whoever wins Maine's Democratic nomination for the U.S. Lisa Murkowski, a moderate from Alaska, voted against advancing Kavanaugh in Friday morning's procedural vote.
BE BEST is a public awareness campaign promoted by Melania Trump, focusing on well-being for youth and advocating against cyberbullying and drug use, according to the BE BEST website. "That we care and we want to show the world we care".