"Flight free" refers to a growing global environmental movement, often called Flight Free UK or We Stay on the Ground, where individuals pledge to not fly for a set period (usually a calendar year) to reduce their carbon footprint. The movement gained traction in the mid-2020s as a response to the disproportionate impact of aviation on climate change. Supporters advocate for "slow travel," using trains, ferries, and buses instead of planes. In 2026, the movement has shifted from a personal sacrifice to a "travel lifestyle" brand, emphasizing the scenic and cultural benefits of terrestrial travel over the "sterile" experience of flying. Participants often use the hashtag #FlightFree2026 to share itineraries and tips for crossing continents without boarding a plane. It is less about a total ban on flying and more about challenging the "normalcy" of air travel for non-essential trips.