Greenwich, Charlton and Woolwich could get direct trains to Luton Airport under plans that are about to go out to consultation.
The plans would see trains seven days a week from Luton to Rainham, Kent, via Blackfriars, London Bridge, Greenwich and Dartford.
More services through London Bridge to north London and beyond will be possible when the Thameslink works are completed in 2018.
It would give passengers at Deptford, Greenwich, Maze Hill and Westcombe Park – who currently rely on trains to Cannon Street – a choice of London terminals after trains to Charing Cross permanently ended in January 2015.
The new lines through London Bridge to Blackfriars will run in between those to Charing Cross and Cannon Street, severing the old connection between Greenwich and the Charing Cross lines (although trains can still run in emergencies).
Trains would also stop at Charlton, Woolwich Arsenal, Plumstead, Abbey Wood and Dartford, but not at Woolwich Dockyard, Belvedere or Erith.
As well as connections to Luton Airport, passengers would also have direct links to Eurostar at St Pancras and Crossrail at Abbey Wood, as well as north-west London destinations at West Hampstead.
The trains would be operated by Thameslink rather than Southeastern, and the consultation is now on its website.
Elsewhere in south east London, Govia Thameslink Railway’s proposals also include increasing the miserly train service through Crofton Park and Catford from two to four trains per hour.
Meanwhile, local MPs have been pressing goverment ministers on the state of Southeastern with little success. Transport minister Paul Maynard couldn’t be bothered to answer a question from Lewisham East’s Heidi Alexander on whether Southeastern would be given new rolling stock in a debate on Thursday morning, although he was more forthcoming when asked for a meeting about Southeastern by the Conservative MP for Bromley, Bob Neill. Pressed by Eltham’s MP Clive Efford, he confirmed all local MPs would be able to attend.
But asked by Greenwich and Woolwich MP Matt Pennycook if he backed plans to devolve SE London’s rail services to TfL, transport secretary Chris Grayling was non-committal, saying he wanted to see proposals from mayor Sadiq Khan first.
1.15pm update: What gets given can also be taken away, and buried away in the full proposals are plans to cut little-advertised direct trains from New Cross Gate to Gatwick Airport and other destinations in Surrey and Sussex, with passengers expected to take slow Overground trains and change at Norwood Junction.
There’s a huge consultation survey, which covers a vast number of changes and makes some peculiar assumptions, available to fill in. The new Greenwich line trains are covered by questions 15, 16 and 31, Catford line in questions 17, 29 and 30 and New Cross Gate cuts in questions 45 and 56.