Heathrow recorded 7,859,408 passengers in July 2026, a 1.5pc decrease from July 2025. Heathrow Airport has lost its position as Europe’s busiest airport to Istanbul. Istanbul broke its single-day record on 25 July 2025 with 271,836 passengers and again on 27 July 2025 with 272,132 passengers. England’s prime minister Andy Burnham previously expressed concerns over Heathrow expansion, stating the plans divert infrastructure investment away from the North and trap it in London. Heathrow airport monthly passenger numbersIstanbul airport monthly figuresIstanbul airport monthly growthHeathrow airport annual passenger numbersIstanbul airport annual figures