Although not home to the largest commercial airliner of all time, the Airbus A380, American engineers have developed some truly enormous aircraft. Manufacturers from the USA have made the greatest contribution, including McDonnell Douglas and Boeing.

This article uncovers the five largest commercial airliners in American aviation history: MD-11, 767-400ER, 787-10, 777X, and 747-8. It gives key specifications for each jet and details on their developmental and operational history.

5

McDonnell Douglas MD-11

This list’s only tri-jet is 170 feet long

The fifth-largest US commercial jet is the McDonnell Douglas MD-11. It was first built by McDonnell Douglas, later acquired by Boeing, and is the largest tri-jet aircraft to ever take to the skies. It has a length of over 200 feet and a height approaching 60 feet. Across three classes, the aircraft can accommodate 296 passengers, and it has a range of 7,130 nautical miles (13,200 km). The jet’s maximum takeoff weight is 630,500 lb (286 tonnes). It also featured technological advances, such as the incorporation of a glass cockpit, removing the need for a flight engineer.

Despite these impressive attributes, the MD-11 is considered a failure. It was built to compete with the Airbus A340 and Boeing 777, but could not match their popularity. McDonnell Douglas sold just 200 MD-11s, compared with the 380 A340s sold by Airbus and the thousands of 777s sold across multiple variants.

The table below shows essential statistics for the McDonnell Douglas MD-11, giving an impression of its impressive size, according to Skybrary:

The primary failing of this aircraft was that it didn’t match the lofty performance ambitions set by McDonnell Douglas and promised to customers. It was thought the jet would be able to fly 7,000 nautical miles (13,000 km), but it only achieved a range of 6,460 nautical miles (11,963 km). That wasn’t as far as the Airbus A340. Meanwhile, its aerodynamic design flaws created a high fuel burn, making the aircraft unable to compete with the A330.

4

Boeing 767-400ER

This extended-range 767 variant is over 200 feet long

The third-largest American widebody aircraft is the Boeing 767-400ER. This is the longest length and range of the variants, and the three available fuselage lengths. Specifications published by Delta Air Lines reveal that this aircraft is 201 feet 4 inches (61.37 m), 55 feet 4 inches (16.9 m) tall, and has a wingspan of 170 feet 4 inches (51.9 m). The plane has a cruising speed of 525 mph (845 km/h) and a range of 6,020 miles (9,688 km).

Delta Air Lines operates this jet with four classes: Delta One (34 seats), Delta Premium Select (20 seats), Delta Comfort (28 seats), and Delta Main (156 seats).

The 767’s greatest contribution to commercial aviation isn’t its size, but in its transformative impact on transoceanic flying. Technological advances and successful lobbying by Boeing gave this aircraft long Extended-range Twin-engine Operational Performance Standards (ETOPS) capabilities. The first ETOPS approval granted for the 767 allowed it to fly up to 120 minutes from suitable diversion airports. That meant twin jets could participate in long-haul transoceanic flying for the first time, setting the stage for huge long-range twin jets of the current age, including the 787, A350, and 777X.

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The type remains in production today, with a three-figure backlog of non-passenger aircraft.

3

Boeing 787-10 Dreamliner

The Dreamliner’s largest variant is 224 feet long

The largest Dreamliner variant is the Boeing 787-10, though its fuselage is 18 feet (5.5 m) shorter than the Airbus A350-1000. Boeing stretched the Dreamliner’s fuselage as much as was feasible without compromising performance to build this variant. The idea came in December 2005 following interest from Emirates and Qantas, and Boeing believed the stretch would raise capacity to 290-310 passengers. That’s similar to the 777-200 and A350-900, but with shorter range.

The jet is popular among its carriers for its capabilities on high-density services under 6,500 nautical miles (12,040 km). The jet’s lower maximum takeoff weight also gives the aircraft better flexibility in terms of the airports it can operate from.

The table below includes specifications for the Boeing 787-10 Dreamliner according to Boeing:

With the jet officially launched at the Paris Air Show in 2013, where the manufacturer secured 102 orders, the jet finally gained FAA certification in January 2018. Two months later, the first aircraft arrived in launch customer Singapore Airlines’ hands. A month later, Singapore Airlines put the jet into service, with a capacity of 337 (36 in business class and 301 in economy).

2

Boeing 777X

The largest 777X variant is over 250 feet long

The second-largest American widebody aircraft is the Boeing 777X, the latest variant of the Boeing 777 family that is yet to be delivered to any carriers. It features all the trappings of 2020s aviation technology to allow for lower fuel burn, with the hope that this aircraft will compete effectively with the Airbus A350. The jet is set to reduce fuel burn per seat by 15% compared with the earlier Boeing 777-300ER. The largest variant will be the 777-9, and it will be powered by 105,000 lbf General Electric GE9X engines. The 777-9 is an incredibly long aircraft at over 250 feet, allowing it to seat 426 passengers in a standard two-class configuration.

The 777X also has a huge freighter variant, the 777-8F. This plane will be able to carry 44 pallets with a revenue payload of around 247,500 lbs (112 tonnes) over a range of 4,410 nautical miles (8,170 km). It has a length of 232 feet (70.9 m), which is a touch shorter than the Boeing 747-400F. The cargo capacity onboard is 21,061 cubic feet (596 cubic meters) on the main deck, 5,291 cubic feet (150 cubic meters) on the lower deck, and 600 cubic feet (17 cubic meters) in the bulk compartment.

The table below lists specifications for the Boeing 777-9, as claimed by Boeing:

Whether the 777X should be included in this article is highly debatable. That is because the jet has 619 orders – 35 for the -8, 521 for the -9 and 63 for the -8F, but it has not made any deliveries as it is waiting for certification. Boeing has already built at least 26 examples, but these won’t be the first delivered, as adjustments will need to be made based on the conditions of certification. At the 2025 Dubai Air Show, Boeing’s Vice President of Commercial Marketing, Darren Hulst, told Simple Flying: “Some of the airplanes that we’ve built in the past or have already built will go through some change incorporation to make sure they’re all with the delivery standard or the certification standard. And that will kind of feather through the next few years.”

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1

Boeing 747-8

The final 747 variant was the largest, with a fuselage length of 250 feet (76 m)

In June 2012, the first commercial 747-8 took to the skies with launch customer Lufthansa. The jet stretched the previous iteration’s fuselage by 18 feet (5.5 m), bringing the total length to 250 feet (76 m). In the cabin, up to 467 passengers could be accommodated across three classes. The jet was also the heaviest Boeing airliner with a maximum takeoff weight of 975,000 pounds (442 t).

The 747-8 also came with 21st-century advancements, including a deeper, thicker wing to carry more fuel, and raked wingtips for aerodynamic efficiency. Power came from a smaller variant of the Boeing 787’s General Electric GEnx. These advancements gave the jet a range of 8,000 nautical miles (15,000 km) and tremendous efficiency advancements. In a press release for the assembly of the first 747-8I, Boeing claimed that the 747 was 16% more fuel-efficient, had a 30% smaller noise footprint, and had 113% lower seat-mile costs than the 747-400. Nico Buchholz, senior vice president, Corporate Fleet of Deutsche Lufthansa AG, said: “We are looking forward to welcoming the aircraft in our fleet as it is a component of Lufthansa’s strategy to modernize its fleet and increase environmental stewardship.”

Sadly, the days of huge quad jet aircraft like the 747-8 are numbered. Airlines are moving towards modern twin-jet aircraft that combine range, efficiency and flexibility. The advent of ETOPS means that quad-jets no longer enjoy a monopoly over transoceanic aviation. Some airlines still use these huge aircraft, particularly those that can still justify hub-and-spoke aviation and use slot-constrained airports, but their numbers are undeniably dwindling. For that reason, we will likely never see another American airliner as large as the 747-8.