Traveller growth it explains continued to be driven by larger, fuller, quieter aircraft at the world’s third busiest hub.
Seats per aircraft increased 0.7% to 204.9, while load factors increased 0.1 percentage points to 76.1%.
Passengers per aircraft rose 0.9% to 156.0, and passenger volumes remained strong within emerging markets, increasing 9.6% to China, 7.2% to Brazil, 6.6% to Mexico and 4.5% to India.
Heathrow continued to welcome the transfer passengers that make such long-haul routes viable, with volumes increasing 1.1%.
Cargo was up 8.3% overall, increasing 42.7% to Mexico, 35.8% to Brazil, 21.0% to Russia, 13.6% to China, 13.4% to India and 11.7% to Turkey.
Heathrow CEO, John Holland-Kaye, says: “As the Airports Commission prepares to launch its national consultation, more and more people across the UK are recognising that Heathrow plays a critical role in the success of the British economy.
“Business is telling the commission that Heathrow is geographically in the best location, is the only airport that can deliver flights to the world's growth markets and the only option that has exports front and centre of its expansion plans.
“With 26% of all British exports going through Heathrow, compared to less than 2% at Gatwick, businesses up and down the country are making it clear that Heathrow is the only option that can help Britain win the race for growth.”