Heathrow has lost its position as Europe’s busiest airport to Istanbul, new figures show.
The west London airport said 7.86 million passengers passed through its four terminals in July, whereas its Turkish counterpart recorded 8.15 million passengers over the same period.
Annual figures from trade body Airports Council International show Heathrow was Europe’s busiest airport from 1996 to 2019.
It lost that position in 2020 amid coronavirus travel restrictions before regaining it in 2023 and holding the title since then.
Heathrow’s July passenger total represented a 1.5% decrease compared with the same month last year, whereas Istanbul saw a 2.3% boost.
The Iran-US conflict has had an impact on Heathrow’s passenger traffic.
Its passenger numbers on Middle East routes in July were down 20.2% year-on-year.
Despite this, Heathrow continues to operate its two runways at near-full capacity, and is seeking Government permission to build a third.
An expansion proposal by the airport’s owners would enable it to accommodate 150 million passengers per year.
It recorded 84.46 million passengers in 2025.
Heathrow said in a statement: “Heathrow is operating at capacity.
“The case for expansion has never been clearer, as Heathrow was overtaken in July by Istanbul airport as the busiest hub in Europe.
“Our plans will ensure the country gets the infrastructure it needs to stay competitive and will deliver all-important economic growth.”
Transport Secretary Heidi Alexander launched a consultation on the renamed Heathrow expansion national policy statement in June, setting out the conditions needed if the project is to be given the go-ahead.
Then-chancellor Rachel Reeves said at the time she was determined to get “spades in the ground” for the third runway in the current Parliament, and for it to be built by 2035.
Prime Minister Andy Burnham, who sacked Ms Reeves, previously expressed concerns over Heathrow expansion, stating the plans divert infrastructure investment “away from the North and traps it in London”.
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