Airbus Helicopters H145 vs Airbus Helicopters H155 vs Airbus Helicopters H175 vs Airbus Helicopters H215 vs Bell 525 Relentless

The Airbus H145 is the lightest of the group, typically used for short to medium missions with a generally shorter range than the larger aircraft, and it usually carries the fewest passengers (often around 8–10 depending on layout). The Airbus H155 sits in the light‑intermediate class, offering more cabin volume, somewhat longer range, and higher typical passenger capacity (often around 10–12). The Airbus H175 is a super‑medium helicopter aimed at offshore and corporate transport; it generally provides longer range than the H155 and a higher practical passenger load (commonly about 12–16 in transport configurations). The Airbus H215 is a heavy twin in the Super Puma family, optimized for lifting and utility/offshore work, typically accommodating more passengers than the H175 (often into the high‑teens or more depending on fit) and offering solid medium‑to‑long range. The Bell 525 Relentless competes in the super‑medium segment against the H175, emphasizing modern avionics and a spacious cabin; its range and passenger capacity are generally comparable to, or slightly above, typical H175-style missions (often around 16–19 seats depending on configuration).