Overview
- Heathrow handled almost 84.5 million passengers in 2025, posting records in nine months, a busiest December of about 7.2 million, and a single‑day peak above 270,000 on 1 August.
- Heathrow said it was Europe’s most punctual major hub in December, with more than 97% of passengers clearing security in under five minutes.
- Aircraft movements rose 0.7% to 477,883 in 2025, while December cargo volumes hit a record near 138,000 tonnes and total freight weight for the year increased by 12,600 tonnes.
- A March 2025 sub‑station fire closed the airport and disrupted travel for over 200,000 people, with investigators deeming the incident preventable due to moisture‑damaged transformer insulation.
- The government‑approved expansion totals £49 billion including a third runway to boost capacity to up to 150 million, alongside about £1.3 billion of 2026 upgrades starting with a Terminal 4 revamp and a new Terminal 2 baggage system.