A burst water main under Heathrow Airport’s Inner Ring Road West caused flooding that blocked road access to Terminals 2 and 3 early on Saturday, August 15, 2026.
Access to Terminals 2 and 3 was restricted for several hours due to flooding, forcing road closures that limited vehicular entry. Passengers were advised against traveling by car to these terminals and urged to use rail connections including Heathrow Express, the Elizabeth Line, and the Piccadilly Line. Roads to the terminals reopened at 12:25pm on the same day, allowing normal airport operations to resume.
The flooding disrupted travel plans for passengers such
as London resident Rahel Staeheli and her family, who altered their journey by using the London Underground after discovering no cars could reach Terminals 2 or 3. Terminal 2 handles over 16 million passengers annually and serves as the key hub for Star Alliance carriers like Lufthansa, Singapore Airlines, and Turkish Airlines.
Despite losing its status as Europe’s busiest airport to Istanbul Airport in July 2026—with Heathrow handling 7.86 million passengers across four terminals compared to Istanbul’s 8.15 million—Heathrow continues to operate near full capacity on its two runways. The airport is pursuing government approval to construct a third runway
and expand capacity to 150 million passengers per year.
Official Response and Repair Efforts
A Heathrow spokesperson confirmed the burst water main was isolated and repair teams were active. The airport apologized for the inconvenience and thanked passengers for complying with advisories. “The burst water main is continuing to impact road operations in the central terminal areas. The leak has been isolated and we’re working on repairs,” the spokesperson said. They added, “Following earlier road flooding impacting access to Terminals 2 and 3, all roads have now reopened and the airport continues to operate as normal.”
