London City Airport has been closed after an unexploded World War II bomb was found in the nearby River Thames, affecting tens of thousands of passengers.
All flights in and out of the airport, in east London, were stopped on Monday (UK time), affecting up to 16,000 passengers, according to a spokeswoman.
More than 100 departures were cancelled.
Workers found the device at the George V Dock at 5am on Sunday.
Newham Council said the German 500kg fused bomb would not be cleared until at least Tuesday.