The 737 vs A320 debate is one of aviation’s oldest and most heated rivalries. Together, these two narrow-body workhorses dominate global short-haul aviation. In fact, more than 75% of all commercial flights worldwide are operated by either a Boeing 737 or an Airbus A320 family aircraft. They fly nearly identical missions. They carry similar passenger loads. They burn comparable amounts of fuel. Yet they are fundamentally different airplanes beneath the surface.

For the casual passenger, telling them apart can feel impossible. Both have two engines hanging under swept wings. Both have white fuselages with airline branding. Both seem to land and take off the same way. However, for plane spotters, aviation photographers, and avgeeks, the visual differences between the 737 and A320 are everywhere you look — once you know where to look.

This guide breaks down every single visual cue that separates the Boeing 737 from the Airbus A320. By the end, you’ll spot the difference from a parking lot, an airport observation deck, or even your living room window during a flyover. Moreover, you’ll understand why each design choice was made — which reveals the deeper philosophy behind two of aviation’s most influential aircraft families.

The fastest way to identify a 737 vs A320 is to look at the nose cone. Boeing and Airbus chose two completely different shapes — and once you see the difference, you’ll never confuse them again.

Boeing 737: Pointed and Aggressive

The Boeing 737 has a distinctly pointed, conical nose that tapers sharply to a fine tip. Originally designed in the 1960s, this nose shape was inherited from the Boeing 707 and 727 families. The pointed profile gives the 737 an aggressive, almost shark-like appearance from the front. Furthermore, the nose sits relatively close to the ground — a feature that ground crews love because it makes nose loading and inspection easier.

Airbus A320: Rounded and Bulbous

In contrast, the Airbus A320 has a rounded, almost bulbous nose that looks softer and more organic. Designed in the 1980s with computational fluid dynamics tools that didn’t exist when the 737 was born, the A320’s nose shape was optimized for aerodynamic efficiency at cruise. As a result, it looks chunky and friendly from the front — some spotters call it the “dolphin nose” because of its rounded curve.

After the nose, the cockpit windows are the second-most reliable way to tell a 737 vs A320 apart. The window shapes are completely different, and once you see it, you can never unsee it.

Boeing 737: The Distinctive “Eyebrow” Windows

The Boeing 737 cockpit features angular, rectangular windows with a distinctive cut corner on the lower side. Older 737 models (the Classic series and earlier NG aircraft) also had small triangular “eyebrow” windows above the main windshield — these were designed for celestial navigation in the pre-GPS era. Although Boeing stopped installing eyebrow windows on newer 737s, many older aircraft still have them, often painted over to maintain a clean appearance.

Airbus A320: Sleek and Symmetrical

The Airbus A320’s cockpit windows are more rounded and symmetrical, without the cut corner that defines the 737. The overall shape looks cleaner and more modern, reflecting the A320’s 1980s design heritage. Additionally, the windshield wipers on the A320 park in a different position — another small but reliable spotting cue when you can see the aircraft from the front.

When comparing the 737 vs A320, engines are arguably the most photogenic spotting feature. Boeing’s design history forced them into a unique engine shape that you’ll never see on an Airbus.

Boeing 737: The Famous “Flat Bottom” Engines

The Boeing 737 has a problem — and that problem became its most recognizable design feature. Because the 737 sits so low to the ground (a heritage from the original 1960s design), there was never enough clearance to mount large modern high-bypass turbofan engines underneath the wings. As a result, Boeing engineers had to flatten the bottom of the engine nacelle to give the engine ground clearance. This created the iconic “hamster cheek” or “flat-bottomed” engine shape that has been a Boeing 737 trademark since the 737 Classic series in the 1980s.

Look at any modern 737-800, 737 MAX, or 737-900ER, and you’ll immediately notice the engine intake is not a perfect circle. The bottom is squared off, while the top remains rounded. This unique shape is one of the easiest visual cues for spotters because it’s visible from almost any angle.

Airbus A320: Perfectly Round Nacelles

Airbus designed the A320 from a clean sheet in the 1980s, with modern high-bypass engines already in mind. Therefore, the A320 has plenty of ground clearance under the wings for full-circular engine nacelles. Whether you’re looking at a CFM56-powered A320ceo or a brand-new PW1100G-powered A320neo, the engine intakes are perfectly circular. There’s no flattening, no compromise. It’s a clean aerodynamic shape that screams “Airbus” from across the airport.

The landing gear height tells you immediately whether you’re looking at a 737 or an A320. Boeing’s heritage design forces a short stance, while Airbus chose a taller, more modern setup.

Boeing 737: Sits Close to the Ground

The Boeing 737 has notably short landing gear. From the ground to the bottom of the fuselage is roughly 17 inches at the rear door — close enough that passengers can almost touch the underside of the aircraft while walking past. This low stance was originally designed in the 1960s to allow boarding without jet bridges, using simple airstairs that could be deployed from the aircraft itself. Many regional airports in the 1960s and 70s didn’t have jet bridges, so Boeing’s “self-sufficient” design was a competitive advantage.

Airbus A320: Tall and Graceful

The Airbus A320 stands significantly taller on its landing gear — roughly 2 to 3 feet higher than a 737 at equivalent points. This taller stance gives the A320 a more elegant, almost “long-legged” appearance. The extra height also gives ground crew more room to work underneath the aircraft, and it provides the engineering margin needed for those perfectly round engine nacelles. Furthermore, the taller gear made the A320 easier to upgrade with new engines like the LEAP-1A or PW1100G in the A320neo program — without the design headaches Boeing faced with the 737 MAX.

Both Boeing and Airbus have evolved their wingtip designs over decades. As a result, the wingtip shape gives you not only the manufacturer but also the approximate age and variant of the aircraft. To learn more about wingtip physics, check our earlier post on cabin design choices which touches on aerodynamic optimization.

Boeing 737 Wingtip Evolution

The original 737 had simple flat wingtips with no special devices. Then came the 737 NG generation with optional blended winglets — those tall, upward-curving extensions you see on most modern 737-800s. Most recently, the 737 MAX introduced the unique AT (Advanced Technology) winglet — a dual-direction split design that points both up and down, looking almost like a butterfly’s wing.

Airbus A320 Wingtip Evolution

Airbus also evolved its wingtip designs. Original A320s had small triangular wingtip fences — tiny vertical extensions that split into a small upward and downward tip. With the A320neo program, Airbus introduced sharklets — large, single-piece upward-curving wingtips that look similar to Boeing’s blended winglets. However, sharklets are taller, more angular, and have a distinctive shape that experienced spotters can identify instantly.

Although passengers rarely see inside the cockpit, this is where the 737 vs A320 difference becomes most philosophical. Boeing and Airbus made fundamentally different choices about how pilots should fly an airplane — and those choices reflect two completely different design philosophies. Both are linked to strict cockpit procedures that govern modern aviation.

Boeing 737: The Traditional Yoke

Boeing kept the traditional control yoke — that big steering-wheel-like device directly in front of each pilot. The yoke moves forward and backward for pitch control, and left and right for roll. Both pilots see exactly what the other pilot is doing because the yokes are mechanically linked. Furthermore, the 737 retains traditional cable-and-pulley flight controls as a backup to the hydraulic system, giving pilots direct mechanical feedback through the controls. Many pilots love this “feel” — it’s tactile, immediate, and reassuring.

Airbus A320: The Revolutionary Sidestick

Airbus took a radically different approach. The A320 was the world’s first commercial aircraft with full fly-by-wire flight controls — meaning the pilot’s inputs are translated into electronic signals that command the flight control computers, which then move the actual control surfaces. To match this digital philosophy, Airbus replaced the yoke with a small sidestick — essentially a video game-style joystick mounted on the outboard side of each pilot’s seat. Most importantly, the two sidesticks are not mechanically linked, which has caused some training challenges over the decades.

Here’s a spotting cue you can use even when the aircraft is too far away to see clearly: listen to the sound. The Airbus A320 family has one of the most distinctive auditory signatures in commercial aviation.

When an A320 is on approach or taxiing, you can often hear a high-pitched “whirring” or “barking” sound coming from the aircraft. This noise comes from the Power Transfer Unit (PTU) — a hydraulic device that activates when there’s a pressure difference between the two main hydraulic systems. The PTU makes a sound that aviation enthusiasts have nicknamed the “Airbus dog bark” or “Airbus whine,” and it’s so distinctive that you can identify an A320 with your eyes closed.

The Boeing 737, by contrast, has no such signature sound. Its hydraulic systems work differently, producing a much quieter operation. As a result, you’ll rarely hear anything unusual from a 737 except the standard engine noise and APU hum.

Here’s a side-by-side technical comparison of the two most popular modern variants — the Boeing 737-800 and the Airbus A320ceo. These are the workhorses you’re most likely to fly on any given short-haul route worldwide.

The Boeing 737 entered service in 1968, designed for short-haul routes that larger aircraft like the 727 couldn’t economically serve. For nearly two decades, Boeing dominated the narrow-body market with little real competition. Then in 1987, Airbus launched the A320 as a direct challenger — and the aviation world changed forever.

Airbus made bold technological choices: fly-by-wire flight controls, sidesticks instead of yokes, and a glass cockpit that pushed Boeing to modernize as well. Meanwhile, Boeing responded with the 737 Classic (1980s), then the 737 Next Generation (1990s), and most recently the 737 MAX (2017). However, each Boeing update was constrained by the original 1960s design — including that infamous low ground clearance that forced the flat-bottom engine compromise. Airbus, starting fresh in the 1980s, had no such limitations.

Today, the 737 vs A320 competition drives nearly every major narrow-body aircraft purchase decision worldwide. Airlines like Ryanair, Southwest, and American Airlines remain loyal to Boeing. Meanwhile, easyJet, IndiGo, Lufthansa, and Air India favor Airbus. The market is split almost evenly — and the rivalry continues to push both manufacturers to innovate faster than they otherwise would.

The Boeing 737 vs Airbus A320 debate isn’t really about which aircraft is “better.” Both are exceptional machines that have safely carried billions of passengers across thousands of routes. Instead, the differences between them reflect two different design philosophies, two different generations of engineering, and two different visions for what a modern airliner should be.

Boeing’s 737 represents evolution — taking a proven 1960s design and refining it over six decades to keep pace with modern requirements. Airbus’s A320 represents revolution — starting fresh in the 1980s with new technology, new controls, and new ideas. Each approach has its strengths, and the global aviation market clearly has room for both. For more on how aircraft design impacts daily operations, see our breakdown of airport firefighting systems and ground operations zones.

The next time you’re at an airport, take a moment to look carefully at the aircraft on the apron. Check the nose. Look at the engines. Notice the stance. Listen for that distinctive Airbus bark. Suddenly, you’ll find yourself identifying every aircraft instantly — and you’ll understand why plane spotters around the world consider the 737 vs A320 identification challenge one of aviation’s most fundamental skills. Welcome to the club.