Lobby group the Confederation of British Industry have produced a report claiming controversial London night flights must be protected.
The Government is currently carrying out a consultation into the impact of night flights.
A spokesperson for the DfT said no decision has yet been reached:
"We welcome the response to this consultation from CBI. The Government recognises that noise disturbance from aircraft flying at night is the least acceptable impact of airport operations on local residents.
"At this stage we are gathering evidence on what might be feasible and have taken no decisions yet on our preferences.
"We will be consulting on specific proposals later this year once we have assessed the evidence received from this consultation."
A report claims that night flights into London's airports must be protected to safeguard a vital part of the UK economy.
The document produced by lobby group the Confederation of British Industry (CBI), said overnight flights played a "unique role" ensuring timely movements of freight goods and enabling business travellers to arrive at destinations for a full day's work.
A Department for Transport consultation (DfT), which is closing today, is reviewing opinion on night flights at Heathrow, Gatwick and Stansted Airports.
Campaigners opposed to night flights say air traffic noise disturbs the sleep of those living under flight paths.
The current agreement with airlines runs out in October 2014.
Protestors want flights at Heathrow to be banned between 11pm and 6am
John Stewart, chairman of the Heathrow Association for the Control of Aircraft Noise, said: "You don't need an alarm clock living under the flightpath. The first plane coming over at 4.30 in the morning is your alarm clock.
Protesters donned pyjamas and dressing gowns today as they called for night-time flights to be banned. Residents living on the flightpath of Heathrow airport gathered in Hounslow to urge the Government to ban flights between 11pm and 6am.
Around 30 demonstrators wearing nightwear took part in the event in Lampton park to voice anger that air traffic noise was ruining their sleep. Ministers are expected to consult next month on a new night flight regime for three designated airports - Heathrow, Stansted and Gatwick.
The current agreement with airlines runs out in October 2014. Similar demonstrations were being held today across Europe, including Belgium, Italy and Germany