This work explores the dynamic behavior of hybrid composite laminates reinforced with natural and carbon fibers, with a focus on their potential use in aeronautical structures requiring lightweight and high-performance materials. Experimental and numerical investigations were performed on composite plates reinforced with natural fibers (fiberglass/polyester, natural fibers/polyester, and glass/epoxy) and benchmarked against conventional magnesium alloys and carbon fiber reinforced plastics (CFRP). Using advanced optical techniques and LMS vibration testing systems at the PPRIM Institute (Poitiers, France), the vibrational response of specimens with varying thicknesses was analyzed under free-free boundary conditions (for natural frequency and mode shape identification) and constrained conditions (to simulate operational constraints). The moiré method provided non-destructive and contactless measurements of out-of-plane displacements. Results reveal that thin natural fiber reinforced plates (FRN) can achieve frequencies and mode shapes comparable to magnesium alloys and CFRP, while highlighting differences between material systems. These findings demonstrate that FRN-based hybrid composites offer promising vibration characteristics for aeronautical applications, combining structural efficiency with enhanced sustainability.