Class B vs Class C Airspace
Major US airspace types compared: entry requirements, equipment, communication procedures, and which airports use each.
Head-to-Head Comparison
Class B Airspace
Class C Airspace
Entry req
Cleared into Class B
Two-way comm established
Equip req
Mode C + ADS-B Out
Mode C + ADS-B Out
Pilot req
PPL (some restrictions for student)
Student OK with logbook endorsement
Pricing
Class B Airspace
Free if equipped
Class C Airspace
Free if equipped
Pros & Cons
Class B Airspace
Pros
- +High traffic protection — separation services
- +ATC vectors for arrival/departure
Cons
- –Mode C transponder + ADS-B Out required
- –Explicit clearance to enter ('cleared into Class B')
- –Student pilots cannot solo into select Class B
Class C Airspace
Pros
- +Two-way comm establishes entry
- +Separation services available
- +More accessible than Class B for transient GA
Cons
- –Mode C transponder + ADS-B Out required
- –Two-way radio comm required
Best For
Class B Airspace
Major terminal areas (JFK, ORD, ATL, LAX)
Class C Airspace
Mid-tier metro airports (CLT, IND, JAX, etc.)
Our Verdict
Class B requires explicit clearance, Class C requires two-way comm. Both require Mode C + ADS-B Out below 10,000 MSL.
Frequently Asked Questions
How do I know if I'm in Class B vs C?
Sectional chart depicts Class B as solid blue lines + altitude floor/ceiling. Class C is solid magenta lines. Always check chart before flight.
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