MPs continued their inquiry into government policies on aviation on 3 December 2012.
The inquiry is focusing on the benefits of aviation to the UK economy and existing constrains on airport capacity across the country.
A recent report commissioned by Heathrow Airport found that a lack of capacity was costing the UK economy £14bn a year in lost trade.
The government has asked a commission headed by Sir Howard Davies to advise on future UK airport capacity needs.
The Davies Commission is expected to present an interim report to the government by the end of 2013, with a full report due in the summer of 2015 - after the next general election.
Mayor of London Boris Johnson has proposed the construction of a new airport in the Thames Estuary, instead of expanding Heathrow.
Evidence was taken from the Chief Executives of Heathrow and Gatwick Airports and the Managing Directors of Luton and Stansted Airports.
The committee also heard from the Aviation Environment Federation, Friends of the Earth, and anti-expansion campaigners at Heathrow, Stansted and Gatwick Airports.