The leader of Newham has said she is "deeply concerned" about the impact the expansion of London City Airport may have on the health of residents.
The annual passenger cap at the airport will be allowed to increase from 6.5 million to nine million under plans approved by the government on Monday.
Newham Council's planning committee unanimously rejected the expansion plans in July last year.
But an appeal was brought to the Planning Inspectorate.
Labour Mayor of Newham Rokhsana Fiaz said she was pleased that the existing weekend curfew period for 24 hours from 12.30pm on Saturdays will remain in place.
But she added: "I remain deeply concerned that our residents will be seriously harmed by the impact of further air-flight noise with today’s decision to allow an increase in flights in the early mornings throughout the rest of the week.
"We will be studying the decision notice carefully and considering all options as we remain concerned about the detrimental impacts on the health and quality of life of our residents.”
The airport's chief executive Alison FitzGerald welcomed raising the passenger cap.
But she added: "As the government has recognised in its decision, rejecting our request to extend our Saturday afternoon operating hours will slow down airlines bringing cleaner, quieter next-generation aircraft to the airport."
Environmental group Greenpeace said the approval "undermines the UK’s climate leadership" and would "mostly benefit an elite of wealthy frequent fliers while dumping the environmental costs on some of London's poorest neighbourhoods".
A spokesman added: "Over half of the destinations served by the airport can be reached by train in under six hours, with Amsterdam and Edinburgh among the most popular routes. Instead of airport expansions, we need better and cheaper train travel."
