Bristol Airport has submitted plans to handle up to 12 million passengers a year by the mid-2020s.
If approved, the expansion plans would see the terminal increase in size, more carparks added, and the road layout within the airport changed.
The airport owners says the plans for additional car parks will help to prevent overspill into local villages.
They have also suggested improvements along the A38 to accommodate the extra people.
The airport has now lodged the application to the North Somerset Council, and it's hoped a decision will be made next year.
Bristol Airport pictures
Bristol Airport says the changes would ensure the airport can meet the demand for air travel to and from the West Country.
It could be the first step towards hosting 20 million passengers by the mid 2040s.
Chief Executive of Bristol Airport Dave Lees spoke to ITV News.
More than 1,000 additional jobs will be created by the development to handle 12 million passengers a year.
Bristol Airport is the ninth busiest airport in the UK and the fifth busiest outside London.
But many residents who live around the airport have criticised these plans, saying they will have a detrimental environmental impact on the area.
The current car park backs onto Carol Lewis's garden.