The giants: A380 and 747
Two aircraft are unmistakable. The Airbus A380 is the only airliner with two full-length passenger decks — four engine, double row of windows running the entire fuselage, and a scale that dwarfs everything at neighbouring stands. If you can see two complete decks of windows from nose to tail, it's an A380.
Two aircraft are unmistakable. The Airbus A380 is the only airliner with two full-length passenger decks — four engine, double row of windows running the entire fuselage, and a scale that dwarfs everything at neighbouring stands. If you can see two complete decks of windows from nose to tail, it's an A380.
The Boeing 747 has the hump: an upper deck that runs only partway down the fuselage, giving the nose its distinctive profile. The later 747-8 has a stretched hump, but any partial second deck means 747 — and with production ended in 2023, every sighting is now a small event.
The big twins: 777, A350 and 787
The Boeing 777 is defined by its engines — the GE90s on the 777-300ER and 777X are the largest jet engines ever flown, with fan diameters wider than a 737 fuselage. Add six-wheel main landing gear bogies (three axles per side, unique among common types) and a blade-like tail cone, and you have a 777.
The Boeing 777 is defined by its engines — the GE90s on the 777-300ER and 777X are the largest jet engines ever flown, with fan diameters wider than a 737 fuselage. Add six-wheel main landing gear bogies (three axles per side, unique among common types) and a blade-like tail cone, and you have a 777.
The Airbus A350 wears a black "bandit mask" around its cockpit windows — the most recognisable cockpit in the sky — with elegantly curved, blended winglets that sweep up like a scimitar. The Boeing 787 counters with raked wingtips (the wing simply tapers to a swept point, no separate winglet) and chevrons: serrated edges at the back of the engine nacelles, visible as a sawtooth outline. Both are slender twin-aisles; mask-and-blended-winglets vs raked-tips-and-chevrons separates them instantly.
The workhorses: A320 and 737 families
Single-aisle narrowbodies are harder, but reliable tells exist. The Airbus A320 family (A319/A320/A321) sits higher on its gear, has a more rounded, "snub" nose, a straighter cockpit window line with a notched final window, and usually wingtip fences — small vertical surfaces above and below the wingtip — or tall curved "sharklets" on newer examples.
Single-aisle narrowbodies are harder, but reliable tells exist. The Airbus A320 family (A319/A320/A321) sits higher on its gear, has a more rounded, "snub" nose, a straighter cockpit window line with a notched final window, and usually wingtip fences — small vertical surfaces above and below the wingtip — or tall curved "sharklets" on newer examples.
The Boeing 737 sits lower, with a flatter underside to the nose, a kinked "eyebrow-free" cockpit window line that angles up at the back, and — on 737NG and MAX — tall blended winglets or the MAX's distinctive split "dual feather" winglets. The 737's engines are flattened at the bottom of the nacelle (a legacy of its low gear), which from the side gives the engine a slightly flat-bottomed D shape; A320 engines are round.
Still stuck? Count doors and look at length: A321s and 737-900/MAX 10s are notably stretched. Or cheat — the registration or type code is on your booking, and flight-tracking apps identify the aircraft on your exact flight from its tail number.
The supporting cast
The Airbus A330, the quiet workhorse of long-haul, looks like a slightly smaller A350 without the mask — conventional cockpit windows, gently curved winglets, and two engines sized between the 787's and 777's. Embraer E-Jets (E190/E195) are slim regional jets with two underwing engines and a distinctive long, pointed nose; the A220 (née Bombardier CSeries) has huge windows, a pointed nose and cockpit windows with a futuristic angular look.
The Airbus A330, the quiet workhorse of long-haul, looks like a slightly smaller A350 without the mask — conventional cockpit windows, gently curved winglets, and two engines sized between the 787's and 777's. Embraer E-Jets (E190/E195) are slim regional jets with two underwing engines and a distinctive long, pointed nose; the A220 (née Bombardier CSeries) has huge windows, a pointed nose and cockpit windows with a futuristic angular look.
Concorde-spotting is sadly archival, but the exercise scales: start with engines (two or four?), then decks, then winglets, then the cockpit window shape. With those four field marks, every airliner at a big airport resolves to a shortlist of one.