A burst water main beneath Inner Ring Road West at Heathrow Airport caused flooding and forced road closures, restricting access to Terminals Two and Three on Saturday, 15 August 2026. The flooding impacted the central terminal area, which includes these terminals and surrounding roads.
Travel Advisory and Alternative Transport
Heathrow Airport advised passengers not to travel by road to Terminals Two and Three due to ongoing flood-related closures. Alternative transport options recommended include rail services such as the Heathrow Express, Elizabeth Line, and Piccadilly Line. Passengers who must travel by car were instructed to use Park and Ride facilities at Terminals Four or Five and
take free rail services or change at local rail stations to reach Terminals Two or Three.
Official Response and Passenger Guidance
A Heathrow Airport spokesman said: “Flooding in the central terminal area has resulted in on-going road closures restricting access to Terminals 2 and 3. Passengers travelling to or from either of these terminals today must not travel by road. Passengers are strongly advised to use Heathrow Express, Elizabeth Line and Piccadilly Line rail services where possible. Any passengers that must travel by car must use Park and Ride, head to Terminals 4 or 5 and take free rail services from there, or change at
local rail stations. Please allow extra time for your journey. Our teams are working to resolve the situation as quickly as possible, we apologise for any disruption caused.”
Timing and Passenger Volume Context
The disruption occurred during the school summer holidays, a peak time when hundreds of thousands of customers pass through Heathrow Airport. This heightened passenger volume increased the potential impact of the access restrictions to Terminals Two and Three.
Additional Details
There was no flooding reported inside the terminal buildings themselves. The disruption mainly affected road access routes to Terminals Two and Three, with no verified information on flight delays or cancellations linked to the
flooding incident.
