If you have ever spotted a Boeing 777-300ER next to an Airbus A350, the first thing that you will immediately note is that the Boeing-built widebody flagship simply looks larger. The Boeing 777-300ER is one of the largest twin-engine passenger aircraft ever built, with the fuselage stretching 242 feet and four inches (74 meters) in length, with a towering tail and huge General Electric GE90 engines that visually dominate pretty much any ramp. By contrast, even the stretched Airbus A350-1000, which measures around 242 feet and one inch (73.8 meters), hides its size behind a sleeker nose, curved winglets, and a lower, more sculpted design.
Underneath, the real size gap between the two models is revealed in terms of weight, payload, and sheer lifting capabilities. The Boeing 777-300ER carries a higher maximum takeoff weight (MTOW), alongside more fuel and more cargo. The jet is often configured with more seats than Airbus A350s, demonstrating its sheer size. We analyze where the Boeing 777-300ER is truly larger than its principal Airbus competitor, how the Airbus A350 fights back in terms of efficiency, and why, despite similar dimensions on paper, these giant aircraft still tend to feel like the largest aircraft on the apron.
A Brief Overview Of The Boeing 777-300ER
The Boeing 777-300ER is a classic large widebody aircraft designed for the 2000s and 2010s, an era when airlines sought to replace gas-guzzling Boeing 747s on high-capacity routes. Originally launched in the early 2000s and entering service in 2004, the aircraft measures an impressive 242 feet 4 inches (74 meters) in length with a massive wingspan of 212 feet 7 inches (64.8 meters). With a tail height of roughly 60 feet 8 inches (18.5 meters), the aircraft is arguably one of the largest aircraft ever developed, alongside the largest twin-engine passenger model to enter service.
The aircraft’s powerplant is behind the jet’s incredible long-haul capabilities. Power comes primarily from a pair of General Electric GE90-115B turbofans, each of which produces around 115,000 pounds (13,650 km) of thrust, enough to easily qualify as the most powerful airliner engine ever certified. At a maximum takeoff weight (MTOW) of around 775,000 lbs (351 tonnes), the Boeing 777-300ER can fly up to roughly 7,370 nautical miles (13,650 km). This gives the aircraft enough range to link almost any major long-haul city pair. In typical two-class layouts, airlines seat around 360-400 passengers, often with economy structured in a ten-abreast configuration. A wide, 20 feet 4 inches (6.2 meters) fuselage and 19 feet 3 inches (5.86 meters) cabin allow that dense layout while still accommodating large premium cabins and generous amounts of belly cargo. Here are some additional specifications for the Boeing 777-300ER, according to technical reports from Boeing:
|
Category |
Boeing 777-300ER Specification |
|---|---|
|
Service ceiling |
43,100 feet (13,100 meters) |
|
Range |
7,370 nautical miles (13,650 km) |
|
Takeoff distance |
10,000 feet (3,050 m) |
Visually, the Boeing 777-300ER amplifies its size with tall landing gear, relatively small cabin windows, and a blunt nose inherited in part from Boeing’s earlier designs. Aircraft spotters will often note how the massive aircraft simply dominates ramps in a way that smaller jets simply do not. For most airlines, this exact combination of capacity, range, and presence has made the Boeing 777-300ER the backbone of global long-haul fleets for multiple decades.
A Brief Overview Of The Airbus A350
The Airbus A350 is a newer-generation aircraft, designed by European consortium Airbus as a clean-sheet composite twin-engine aircraft that was meant to rival the Boeing 777 on range while beating it in terms of fuel burn and overall cabin comfort. The baseline Airbus A350-900 measures around 220 feet (66.8 meters) in length, with a wingspan of around 212 feet (64.75 meters). The jet rises to a height of around 55 feet 11 inches (17.05 meters), and it typically seats around 300 to 350 passengers in a standard three-class layout.
The stretched version of this aircraft family, the Airbus A350-1000, which flies for several airlines, was the variant designed by the manufacturer to compete with the massive Boeing 777-300ER that the company’s American competitor had offered to the market for decades. The A350-1000 is around 242 feet 1 inch (73.8 meters) long while keeping the same wingspan as the smaller Airbus A350-900 model, and has six-wheel main landing gear. The aircraft’s typical three-class capacity runs between 350 and 410 passengers, with maximum takeoff weight (MTOW) sitting around 679,000 lbs (308 tonnes) and a range of around 8,000 to 8,700 nautical miles (14,800 to 16,100 km) depending on the configuration.
Structurally, the Airbus A350 leans heavily on carbon-fiber composites and advanced aerodynamics, including a high-aspect-ratio wing with graceful scimitar winglets and a quieter, smoother cabin environment. Inside, Airbus optimized the cross-section for nine-abreast economy seating with 18-inch-wide seats, positioning the Airbus A350 as a more comfort-focused alternative to the ten-abreast Boeing 777.
Is An Airbus A350 Bigger Than A Boeing 777?
While the 777-300ER is a physically bigger aircraft, the A350-1000 feels more spacious onboard.
How Do These Two Aircraft Compare In Terms Of Specifications?
In terms of raw dimensions, the Boeing 777-300ER is only slightly larger than the largest Airbus A350 model, but it is a significantly heavier aircraft. The Boeing 777-300ER is around 242 feet 4 inches (73.9 meters) long, versus roughly 242 feet 1 inch (73.8 meters) for the Airbus A350-1000, making it essentially a wash. Wingspans for the two jets are also nearly identical, meaning that the most appropriate point of differentiation for the two is not length or wingspan.
Height is one place where the Boeing 777’s size begins to show, with the aircraft rising around 61 feet (18.6 meters) into the air, compared to the Airbus A350-1000, which is only 56 feet (17.1 meters) tall. More importantly, the maximum takeoff weight (MTOW) for the Boeing 777-300ER hits around 775,000 lb (351.5 tonnes) versus just 679,000 lb (308 tonnes) for the Airbus A350-1000. This is a noticeable difference of nearly 100,000 lbs (45 tonnes) in structural payload capacity.
Engine thrust is a similar story, as each General Electric GE90-115B delivers around 115,000 lbs of thrust compared with just 97,000 lbs of thrust for the Rolls-Royce Trent XWB-97 on the Airbus A350-1000. The Boeing 777’s fuselage is also slightly wider, with a 19 feet 3 inches (5.86 meters) cabin versus the Airbus A350’s 19.6 feet (5.96 meters) fuselage and 18.9 feet (5.71 meters) cabin. This extra space and weight, alongside smaller windows and taller landing gear, are the key pieces that make the Boeing 777-300ER the unarguably more powerful machine.
Who Operates These Two Dynamic Aircraft Models?
The Boeing 777-300ER is an established industry veteran, with more than 800 delivered and in service across the world. Emirates is the world’s largest operator by a lot, with more than 120 of the type forming the backbone of the airline’s long-haul network. Other major Boeing 777-300ER customers include Qatar Airways, Air France, Cathay Pacific, Turkish Airlines, Singapore Airlines, Japan Airlines, British Airways, and American Airlines. Most of these customers rely on the aircraft for trunk routes into slot-constrained hubs like London Heathrow, Dubai, and Hong Kong.
The Airbus A350, on the other hand, has spread rapidly since entering service for the first time in 2015. As of early 2025, there are more than 630 Airbus A350s flying with about 33 operators. The largest fleets sit with Singapore Airlines, Qatar Airways, Cathay Pacific, and Air France. Some carriers, with Delta Air Lines being the most notable example here, actually ditched the Boeing 777-300ER and instead elected to use the Airbus A350 as a long-haul flagship.
Recent orders from the type have come from non-traditional carriers like IndiGo, Riyadh Air, and Starlux, showing how the aircraft continues to grow its foothold in the market while broadening its customer base across Asia, Europe, and the Middle East. In short, the Boeing 777-300ER remains more numerically dominant and deeply embedded in legacy fleets, while the Airbus A350 is an increasingly important component of global long-haul fleets.
How Many Miles Per Gallon Does A Boeing 777 Get?
This figure might seem low by automotive standards, but there’s more to it.
Different Jets With Slightly Different Purposes
Although these aircraft overlap heavily in terms of the market they serve, the Boeing 777-300ER and the Airbus A350 serve slightly different needs. The Boeing 777-300ER was designed first and foremost to serve as a high-capacity workhorse, as a big, robust twin-engine aircraft that could replace the Boeing 747-400 on long-haul routes while carrying a lot of cargo and still offering strong operating economics at 350-400 seats.
Airlines tend to deploy the model on dense trunk routes, such as major transatlantic or transpacific sectors, as well as routes from the Gulf to Europe or Asia. High seat counts and cargo yields matter more than absolute fuel efficiency on these kinds of routes. The Airbus A350, by contrast, is designed for flexibility and efficiency.
The Airbus A350-900 hits the core 300-350 seat market with very long range capabilities and lower overall fuel burn, making it ideal for long, thinner routes or ultra-long-haul missions where operating costs are ultimately critical. The Airbus A350-1000 stretches the model towards Boeing 777-300ER territory but with a lighter aircraft and newer systems, positioning it to be an efficient successor to the type.
What Is Our Bottom Line When it Comes To These Two Aircraft?
At the end of the day, the Airbus A350 and the Boeing 777-300ER are both market-leading widebody aircraft with impressive long-range capabilities. The Boeing 777-300ER ultimately comes out as the larger aircraft, and it is often the largest individual model operated by any airline.
As far as widebody models go, the Boeing 777-300ER is not nearly the oldest still in the skies today, with airlines looking to retire older Boeing 777 and Boeing 767 models first. Nonetheless, the Airbus A350 is positioned as a reasonable market successor for the model over the next two decades.
Nonetheless, the Airbus A350 has been built to address a separate set of priorities. Specifically, the jet is designed for maximum fuel efficiency and optimal long-range performance, sacrificing capacity and cargo payload as a result.
