Land an A380 at Heathrow, pay roughly £9,000 in landing charges, divide by 555 seats. That's £16 per passenger before a single bag is loaded. Put a 777 on the same slot and the fee drops to perhaps £6,500 — but the denominator shrinks harder, and the per-seat cost climbs past £20. The math is that blunt.
Emirates will operate nine A380s into and out of London daily this December, spread across Heathrow, Gatwick, and Stansted. Ten daily London flights in total. One 777 holding the odd slot out. The rest: the double-decker, every time.
Weight-based tariffs reward scale. Heathrow's charges — among the highest on earth, clearing £70 per movement in some fee categories — are calculated against maximum take-off weight. An A380's 575 tonnes places it in a punishing tariff band until you remember what's sitting in the back. Seat counts up to 615 compress those fixed costs in a way no narrowbody can touch. A 777 at the same slot pays less in absolute terms but spreads that fee across roughly 350 seats. At Heathrow's price point, flying anything smaller is the expensive option.
Emirates runs roughly 120 active A380s, the largest fleet of the type on earth. That concentration gives it scheduling flexibility no other carrier can replicate — enough aircraft to saturate a single corridor without cannibalizing the rest of the network. London–Dubai is consistently a top-three international city pair by volume. It can absorb the seats. It generates the yields. The A380 is simply the instrument sized for the job.
Then there's the slot question. Heathrow's constrained movement cap means frequency is a finite, non-renewable resource. Ten daily slots for a single carrier on a point-to-point route is close to the ceiling Airport Coordination Limited will sanction. Emirates isn't just filling those slots with the right aircraft — it's filling them with the aircraft that extracts maximum revenue from each one.
Nine A380s a day isn't a capacity statement. It's a territorial one.