The hangars are a place where you store your planes. It's a landslide building but the Large Hangar has to be bought. You'll need AirCash to expand it.
Small Hangar Edit
The small hangar is the first hangar you get since it's part of your airport at the beginning. It's for free and it can first store up to 10 small planes. They have already changed their look.
Medium Hangar Edit
The medium hangar is the next hangar you get by Medium Hangar goal. It costs 60 AirCash if you haven't unlocked it yet. It first stores 8 medium/small planes. It also changed its look.
Ramacopter Hangar Edit
The ramacopter hangar is where you store your Helicopters. You can get this by finishing the goal "Ramacopter Hangar" It first stores 4 Ramacopters but at some point, they will expand by 2. It also changed its look.
Seaplane Hangar Edit
The Seaplane hangar is where you store your Seaplanes. You can get this by finishing the goal "Seaplane Hangar". It first stores 4 Seaplanes but at some point, they will expand by 2. It also changed its look.