Under the proposals the current arrivals hall, which has been in place since 1937, would be demolished.
Arrivals would instead be moved to the ground floor of the current departures terminal – where security and duty free store is at the moment.
Islanders would continue to check-in in the current ground-floor departures area but would then walk up to a new mezzanine floor which would be created to house the security suite and a retail, food and lounge unit.
Access to the 2,300 square-metre mezzanine extension would be via lifts, stairs and escalators from the ground-floor check-in area.
The work is expected to cost £42 million and will be solely funded by Ports of Jersey. The project is subject to planning approval and, if given the go-ahead, will be completed by 2021.
If planning permission is gained, work on the new departures area on the mezzanine floor is due to begin late next year and be completed towards the end of 2019.
Ports of Jersey bosses say there is scope, in the future, to create a multi-storey car park where the main public parking area is currently. The car park would be joined to the integrated airport building via a walkway, although those plans are not included in the current phase of work.
Doug Bannister, chief executive of Ports of Jersey, said change was needed for the Island to comply with the latest aviation legislation.
He also said the development would improve passenger experience.
‘On the mezzanine level you are going to have glass all around you. You are going to see Jersey from everywhere up there. It will be wonderful. It’s about bringing Jersey into the Airport,’ he said.
Asked about the level of impact on passengers and flights while work is carried out, Mr Bannister said he could not rule out some flight disruption.
