Yes, British Airways provides complimentary water to all passengers, though the method of service is currently undergoing changes for sustainability reasons. On long-haul flights (World Traveller and above), passengers are traditionally given a small plastic bottle of water shortly after takeoff, and more is available upon request throughout the flight. On short-haul flights within Europe (Euro Traveller), water is provided for free, often alongside a small snack, despite the airline moving to a "Buy on Board" model for other food and premium beverages. In 2025, the airline began trialing a move away from individual plastic bottles toward paper cups to reduce plastic waste. Under this new initiative, passengers still receive unlimited free water, but it is served from large containers into recyclable cups rather than in sealed bottles. Travelers are encouraged to bring their own reusable bottles, as the crew is happy to refill them for you at any point during the flight to ensure you stay hydrated without generating unnecessary plastic waste.