A six-aircraft Blackburn flight

How many Blackburn aircraft could Courageous or Glorious carry as a flight?

Normally six during the period when they were carried as a Fleet Air Arm flight.

This short answer adds a useful unit-level detail to the broader air-group discussion. The number reflects the period when the aircraft were organized as flights rather than full squadrons. It helps explain why nominal carrier totals were assembled from units of different sizes. The point is specific to the organization and aircraft type being discussed, not a universal squadron capacity.