It also cities the ‘Taylor Swift effect’ for boosting numbers this summer.
Heathrow set a new monthly record, with nearly eight million people flying in August.
This included its busiest day with 269,000 passengers on August 18.
This puts Heathrow Airport on track to handle 30 million passengers between June and September, which would be the busiest summer period in the airport’s history.
Heathrow CEO Thomas Woldbye said: “For the past four months, we have broken several new records, demonstrating our ability to open a world of opportunity for more people, cargo, business and the UK economy.”
The airport says Spain, Greece, Italy and Turkey have been the top holiday destinations this summer.
The Taylor Swift shows brought in an extra 40,000 passengers, the airport said.