Gatwick Airport says it will be "road and rail ready" for a 2nd runway by 2021 with no additional cost to the taxpayer.
Officials from Heathrow and Gatwick have been trying to persuade the government's Airport Commission they will have the best infrastructure to cope with extra travellers.
It's claimed new Gatwick Express trains will double rail capacity by 2016 and improvements will be made to the M23 and M25. Heathrow wants to treble rail capacity to 15 thousand seats an hour by 2030.
An exhibition to explain proposals for a second runway at Gatwick will be held today, the final one in a series.
It's due to be held in Copthorne.
More than six thousand people have attended sixteen events. The plans would make the airport as large as Heathrow.
London Gatwick has issued a statement to the report: “Gatwick welcomes the Transport Select Committee’s report and fully accepts its recommendations.
"Following the events of Christmas Eve, Gatwick set aside a £30 million resilience fund and immediately began projects to strengthen flood defences.
"In partnership with its airlines, extensive work has already been undertaken to improve contingency plans and passenger welfare in times of disruption.
"It is now important to focus on the future and today’s report coupled with David McMillan’s accepted recommendations will help ensure the entire airport community makes the improvements required.”
A report into the chaos on Christmas Eve at Gatwick after flooding caused a power failure suggests the disruption should be a wake-up call to other airports.
More than eleven thousand passengers were affected by the delays and cancellations in 2013. Passengers complained of inconsistent information and a lack of facilities.
A report into the chaos at Gatwick airport on Christmas Eve should be 'a wake-up call for airports across the UK' in dealing with disruption.
More than 11,000 passengers were affected by delays and cancellations after flooding caused a power failure at the airport.
A report into the problems looked at what passengers were not happy with, which included:
Lack of clarity about who was in charge
A lack of basic facilities, such as toilets and drinking water
Confusion about what expenses passengers could be reimbursed for, particularly if alternative flights had been arranged
Louise Ellman, chair of the Transport Committee said, "Many staff at Gatwick, working for the airport, the airlines, and other operators such as the baggage handlers, worked extremely hard to keep flights operating on Christmas Eve and to look after passengers.
"But the problems that unfolded were not new and the whole event should be a wake-up call for airports across the UK to improve their operational resilience.
"Airports must ensure that their contingency planning is good enough to ensure that future disruption will be met with well-drilled arrangements that are familiar to airline operators, airlines and other contractors, and which put passenger interests first."
A six-week public consultation on plans for a second runway at Gatwick is due to start today. Airport bosses say it would be the biggest ever boost to the local economy - worth £56bn and creating 19,000 new jobs.
Campaigners say it'll double aeroplane noise and affect the environment.
The next steps to decide on the future of UK runway capacity will be outlined today, with Heathrow and Gatwick airports shortlisted for new runways.
Both airports could be possible sites for new runways to be installed by 2030.
Sir Howard Davies, Chairman of the Airports Commission will talk about the recommendations for the new runways.
London Mayor Boris Johnson's aviation adviser Daniel Moylan will also speak at the conference.
Mr Johnson is completely against a new, third runway at Heathrow and has instead approved a brand new airport in the Thames Estuary.
The commission excluded any of the estuary plans last month but have not ruled it out completely.
Gatwick saw an increase in passengers last month despite severe disruption on Christmas Eve.
A total of 2.38 million people passed through the airport in December - that's a rise of nearly 5 per cent on the previous year.
Flooding of the River Mole led to power failures on Christmas Eve, with a number of flights cancelled or delayed.
The Chief Executive of Gatwick Airport, Stewart Wingate, has apologised for the chaos at the site on Christmas Eve. Thousands of passengers were stranded for hours after heavy rain led to power cuts. Nearly 70 flights were cancelled.
The Davies report into the future of aviation in the South highlights that airport expansion is desperately needed in the south east - but few people want a new runway in their backyard. While growth could create more jobs, it would also bring more aircraft noise and pollution.
Gatwick Airport still has a lot of spare capacity. But, is a new runway even necessary? Our correspondent Malcolm Shaw has been looking at the arguments.