Heathrow bosses want the CAA to allow them to increase airline charges at the west London airport from the equivalent of £19.33 per passenger for 2012/13 to as much as £27.30 for 2018/19.
Gatwick chiefs want to be free of CAA regulation altogether and have argued for a new seven-year, regulation-free regime which would equate to the per-passenger fee going up from £8.80 in 2014 to a maximum of £10.68 in 2020/21.
At Stansted, Ryanair chief executive Michael O'Leary has long railed against what he sees as excessive airline charges and has been particularly scathing of the CAA as a regulatory body. CAA's announcement represents it's initial proposals with a final decision due in January.
More top news
Three men from East London have been jailed for stealing vital life-saving equipment worth over £100,000 from fire stations.
A 19 year-old from South East London has pleaded guilty after he soiled himself and revealed where he had hidden packets of heroin.
Max Whitlock was greeted by hundreds of fans as he returned to his gym in Essex for the first time since winning double gold in Rio.