As the aviation industry strives towards a greener future, hydrogen has emerged as a pivotal energy source due to its high energy density and clean-burning properties. The versatility of hydrogen fuel ranges from powering regional flights with gaseous hydrogen to fueling long-haul journeys with liquid hydrogen, offering significant potential to decarbonize air travel. While hydrogen presents a promising solution, there are critical challenges that must be overcome. These include issues related to storage, safety, and regulatory compliance. Gaseous hydrogen is suitable for short-to-medium regional flights when integrated with hybrid-electric systems, while liquid hydrogen is better suited for long-haul operations due to its higher energy density. Both forms of hydrogen require robust safety systems to manage risks such as leaks, ignition, and storage durability. Advancements in technologies like high-pressure tanks and advanced cryogenic containers are crucial for mitigating these challenges. Fuel cell technology innovations further enhance hydrogen's versatility, enabling its use in hybrid propulsion systems and turbo-electric engines. Safety and regulatory developments play a vital role in advancing hydrogen-powered aviation. Implementing stringent safety protocols and regulatory frameworks, including advanced leak detection systems and cryogenic storage solutions, are essential for ensuring the safe operation of hydrogen aircraft. Collaborations between aerospace companies, startups, research institutions, and regulatory bodies are driving progress in addressing fuel storage, system integration, and certification challenges. The integration of hydrogen into aviation extends beyond emissions reduction, impacting fuel sourcing, operational logistics, and energy infrastructure. Developing global supply chains for hydrogen production, transportation, and storage is crucial for enabling its widespread use. This transformation in aviation has the potential to influence sustainability across various sectors, creating a ripple effect of positive environmental impact.