Passengers across the UK were left stranded after hundreds of flights were grounded, causing widespread travel disruption. Airlines reported technical issues and weather-related delays, forcing many flights to be canceled or delayed by several hours. Some travelers were stuck on the tarmac for over four hours before being informed of the cancellations. The situation unfolded across major airports, including Heathrow and Gatwick, where long lines formed as passengers waited for updates. Officials have not yet provided a full explanation for the scale of the disruption, though early reports suggest a combination of system failures and adverse weather conditions. The impact has been felt by both domestic and international travelers, with some facing overnight stays at airports. Airlines are working to rebook passengers, but the chaos has raised concerns about the reliability of air travel during peak times.