Piccadilly Line delays at Heathrow after signal failure this morning
15 August 2026 · By Boroughly editorial — AI-assisted, human-reviewed.
Travellers heading to Heathrow this morning faced disruption on the Piccadilly Line after a signal failure at Heathrow Terminals 2 & 3 caused severe delays between that station and Terminal 5. The rest of the line was running a good service throughout.
TfL confirmed the issue shortly after 06:40 and advised that Elizabeth line tickets were being accepted via any reasonable route — a practical alternative for most Chiswick residents, given that Ealing Broadway provides direct Elizabeth line services to Heathrow Terminals 2, 3 and 5.
Later in the afternoon, a separate incident brought a partial suspension between Wood Green and Cockfosters at the opposite end of the line — well away from Chiswick — while emergency services assisted a casualty on the track. Minor delays were reported on the wider Piccadilly Line as a result, with tickets accepted on London Buses and Great Northern during that period. That section of the line is not expected to affect Chiswick journeys directly.
Anyone with early Heathrow connections on Saturday should allow extra time and check the TfL status page before setting off.