Ports of Jersey wants to update the arrivals building by making it wind and water-tight, as part of a wider project to 'enhance the overall travel experience' at the airport.
The building will be stripped of asbestos, obsolete mechanical and electrical services, and 'unsympathetic' additions, including partitions, linings, walls and fixtures.
After this work is completed, the condition of the historic 1937 listed building can be properly assessed.
Ports wants to conserve as much as possible, by keeping the 'Etats de Jersey 1937' crest and the building's inter-war era character.
Bosses say the end vision for the airport is to create a space that is inclusive for everyone and 'unmistakably Jersey' in style.
This includes potentially opening up the wings of the arrivals building, introducing retail and restaurants, or even creating a terrace for people to see the views from the airport.
Airport Director Ashley Maggs tells Channel 103 the whole project could take up to 10 years to complete, but says the building now has a clear future.
"The planned renovations at this time are minor in scale and would only affect parts of the 1937 terminal that have already been substantially altered.
"We are fully committed to protecting the special interest of the historically significant building."
If the planning application is successful, Ports of Jersey hopes work can begin later this year, between October and November.
After this work is done, contractors can look at the building's integrity before moving on to working on the ground floor, then tackling the wings.
Ashley Maggs says the final cost of the project is not yet known, but POJ has a 'significant investment programme'.
Read: Airport departures to get a makeover
Work on the departures terminal begins this month and plans for wider airport site include more car parking spaces, push bike and taxi shelters on the former airport hangar.
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