The FAA divides all US airspace into lettered classes. The class determines who can fly there, at what altitude, and whether prior authorization is required. For drone pilots, most flights happen in Class G. Everything else requires either authorization or outright avoidance.
Class G: where most drone flying happens
Class G is uncontrolled airspace. It covers most of rural and suburban America, from the ground up to 1,200 feet AGL (above ground level) in most areas. Drone pilots can fly in Class G without contacting anyone, without requesting authorization, and without any special certificate beyond the FAA registration and, for commercial work, a Part 107 certificate. The 400-foot altitude ceiling for drones comes from FAA rules, not from where Class G ends.
Class E: controlled, but often accessible
Class E is controlled airspace that starts at various altitudes depending on location. Around airports without control towers, Class E often begins at 700 feet AGL or 1,200 feet AGL. Drone pilots operating below 400 feet in many Class E areas can fly without additional authorization. However, Class E that begins at the surface (marked on sectional charts with a dashed magenta circle) requires LAANC authorization or a Part 107 waiver. The Aloft app shows where surface-level Class E exists at your planned location.
Class B, C, and D: airports and controlled airspace
These classes surround airports and are the areas where you need authorization before flying:
- Class B: The airspace around the busiest airports in the country. Defined by a layered "upside-down wedding cake" structure. Drone pilots must have LAANC authorization (where available) or a Part 107 airspace waiver to fly here. Auto-authorization through LAANC may be available for altitudes of 0 feet (a very low ceiling) or sometimes 50-100 feet depending on the airport.
- Class C: Surrounds medium-traffic airports. Similar to Class B but smaller. LAANC authorization required for drone operations.
- Class D: Surrounds airports with control towers. Smaller than Class C. LAANC authorization required. Many small regional airports are Class D.
Class A: no drone operations
Class A airspace starts at 18,000 feet MSL (mean sea level). No recreational or commercial drone operations are permitted in Class A. This is the domain of commercial aircraft operating under instrument flight rules. For practical drone purposes, Class A is irrelevant: you'll hit the 400-foot ceiling 44,800 feet below Class A's floor.




