Heathrow has warned that post-pandemic passenger growth may be levelling off as it reported handling 6.4 million travellers in April.
More than 90% of passengers passed through security in under 10 minutes over the Easter peak and coronation despite strike action by security staff.
But the London hub said: “There are early indications that passenger growth may be levelling off, with recovery now stable at 93%-95% of 2019 levels across each of the first four months of this year.”
The introduction of Loganair flights to Derry and Dundee to Sumburgh and Kirkwall, supported by discounted landing charges for domestic routes, increased UK destinations served by 50%.
Continued recovery of the East Asia market is expected with departures to seven Chinese cities recommencing by the end of May.
Heathrow echoed calls for the government to set out a policy framework to secure the scale up and commercial production in the UK of Sustainable Aviation Fuel (SAF).
“We welcome Sustainable Aviation’s roadmap, reaffirming that aviation can grow whilst meeting the UK’s legally binding commitments to net zero carbon by 2050,” a statement said.
Outgoing Heathrow chief executive John Holland-Kaye said: “It is only 12 months since all international travel restrictions in the UK were lifted, and we have made tremendous progress.
“I am proud that colleagues across Heathrow have shown Britain at its best for visitors arriving for the coronation.”