Counter terror police have arrested a 49-year-old man on suspicion of the preparation of acts to commit terrorism.
He was stopped by officers at London City Airport and taken to a south London police station for questioning.
Scotland Yard said the man has been released on bail to return on a date in late July, and that a search at an address in Essex was undertaken, but this is now complete.
Actor Danny Dyer has tweeted that the City Airport protest has disrupted his honeymoon with his wife.
A furious passenger says the Black Lives Matter protest that brought London City Airport to a standstill was "really uncalled for". When asked what she thought about the protest, she replied: "Black lives what? They can f*** ***."
The woman, who did not give her name, was delayed en route to Lagos.
Flights at London City Airport are set to resume shortly following a protest by Black Lives Matter.
The airport tweeted confirmation that all the protesters "have now been removed", and flights would resume "as soon as possible".
The Met Police have said all the protesters "have now been removed from the runway and taken into police custody."
They added: "Nine people have been arrested on suspicion of aggravated trespass, being unlawfully airside and breaching London City Airport bylaws."
The Met Police have confirmed seven people have been arrested following the Black Lives Matter protest at London City Airport.
Officers negotiated with the protesters early on Tuesday morning, but at approximately 9.30am officers began making arrests.
In a statement, they said: "So far seven people have been arrested on suspicion of aggravated trespass, being unlawfully airside and breaching London City Airport bylaws."
"Of those seven, two have been removed from the runway. All those arrested will be taken to east London police stations.
They added: "Work continues to remove the remaining protesters from the runway".
Protesters have been surrounded by dozens of police officers on the runway of London City Airport following a major security breach on Tuesday.
ITV News correspondent Nick Wallis, who is at the airport, said the protesters were gathered at the eastern end of the runway, which is opposite the main terminal building.
Aerial footage from the scene shows a heavy police operation currently underway with "at least six vans, two fire brigade vehicles, a police boat and around 30 people in attendance".
Scotland Yard confirmed no arrests have been made.
London City Airport have advised passengers to check with airlines for the status of flights, following a Black Lives Matter protest on Tuesday morning.
They said the passenger terminal building is open, but is "understandably very busy".
British Airways have currently suspended all flights from the airport and advised customers to check with the airline before leaving home.
In a statement, they said: "Due to protester action at London City Airport all flights have been suspended.
"We would advise customers to check with the airline before leaving home."
ITV News correspondent Nick Wallis has tweeted pictures of the disruption caused at London City Airport on Tuesday morning.
He said passengers have been told "not to enter" the terminal and added "no flights arriving or leaving" after protesters locked themselves together on the runway.