
The Boeing 787 Dreamliner is a long-range, mid-size, twin-engine jet airliner that has carried over one billion passengers since its launch in 2007. The 787 was designed to be 20% more fuel-efficient than its predecessor, the Boeing 767, and features composite materials as the primary material in its construction. However, early models of the 787 were overweight, increasing their fuel burn and reducing their maximum range. The 787's fuel efficiency and range have since improved, allowing it to unlock new non-stop routes and enhance the air travel experience for passengers.
| Characteristics | Values |
|---|---|
| Fuel Efficiency | 20% more fuel-efficient than the 767 |
| Number of Engines | 2 |
| Engine Types | Rolls-Royce Trent 1000, General Electric GEnx |
| Number of Passengers | 200-335 |
| Range | 8,500 nautical miles (15,700 km; 9,800 mi) |
| MTOW | 502,500 lb (227.9 t) |
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What You'll Learn
- The Boeing 787 Dreamliner can carry 200-300 passengers for 8,500 nautical miles
- The aircraft is 20% more fuel-efficient than the Boeing 767
- The 787's lighter composite structure reduces fuel use by up to 25%
- The 787 is powered by high-bypass turbofans from GE or Rolls-Royce
- Early 787s were overweight, increasing fuel burn and reducing maximum range

The Boeing 787 Dreamliner can carry 200-300 passengers for 8,500 nautical miles
The Boeing 787 Dreamliner is a long-range, mid-size, wide-body, twin-engine jet airliner. It is Boeing's most fuel-efficient airliner, designed to be 20% more fuel-efficient than the Boeing 767. The 787 can carry 200-300 passengers for 8,500 nautical miles (15,700 km or 9,800 mi). This range is a significant improvement over its predecessor, enabling the 787 to unlock more than 425 new non-stop routes worldwide.
The 787's fuel efficiency is achieved through a combination of engine improvements, aerodynamic enhancements, and the use of lightweight composite materials. The aircraft is powered by either Rolls-Royce Trent 1000 or General Electric GEnx engines, which contribute to approximately 40% of the efficiency gain. The use of composite materials in the airframe construction, instead of aluminium sheets and fasteners, further reduces weight and improves fuel efficiency.
The initial 186-foot-long (57 m) 787-8 variant typically seats 248 passengers and has a range of 7,305 nautical miles (13,529 km or 8,406 mi). However, early-built 787s were overweight, resulting in increased fuel burn and reduced maximum range. These issues impacted the sale of these aircraft, and Boeing offered significant discounts to carriers.
The 787 Dreamliner's distinguishing features include its electrical flight systems, swept wingtips, and noise-reducing chevrons on its engine nacelles. The aircraft's industry-leading technology has transformed the air travel experience for passengers, with more than one billion people carried in less than 14 years. The 787 has also opened up new route possibilities for airlines, demonstrating its significant impact on the aviation industry.
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The aircraft is 20% more fuel-efficient than the Boeing 767
The Boeing 787 Dreamliner is a long-range, mid-size wide-body, twin-engine jet airliner. It is Boeing's most fuel-efficient airliner, designed to be 20% more fuel-efficient than the Boeing 767, which it was intended to replace. This increase in fuel efficiency is achieved through a combination of factors, including more fuel-efficient engines, lighter composite material airframes, improved aerodynamics, and advanced systems.
The 787's engines, the Rolls-Royce Trent 1000 and General Electric GEnx, are estimated to contribute about 40% of the overall efficiency gain. The use of composite materials in the airframe construction also plays a significant role in reducing weight and improving aerodynamics, leading to further fuel efficiency improvements. Additionally, the 787 features swept wingtips and noise-reducing chevrons on its engine nacelles, contributing to its efficiency and distinctive appearance.
The fuel efficiency of the 787 has been a key selling point, with Boeing targeting a 20% reduction in fuel burn compared to the 767. This claim has been supported by data from launch customers, such as All Nippon Airways (ANA), which reported even higher fuel burn reductions of around 21% on international flights compared to the 767-300ER. On domestic routes, the 787 has met or exceeded expectations, delivering 15-20% fuel burn savings.
However, it is important to note that the actual fuel efficiency achieved can vary depending on various factors, including seating configuration, passenger load factor, air cargo, and operational procedures. For example, early-built 787s (nicknamed the "Terrible Teens") were overweight, leading to increased fuel burn and reduced range. Additionally, airlines may prioritise other factors over fuel efficiency, such as range, passenger capacity, or speed, as seen with the proposed 747X and Sonic Cruiser replacement aircraft programs.
Despite these considerations, the 787 remains a popular choice for airlines, with its combination of fuel efficiency, range, and passenger capacity. As of June 2025, the 787 program had received 2,199 orders and made 1,198 deliveries. The 787's fuel efficiency has also contributed to its use in sustainable aviation initiatives, such as Virgin Atlantic's transatlantic flight using 100% Sustainable Aviation Fuel (SAF).
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The 787's lighter composite structure reduces fuel use by up to 25%
The Boeing 787 Dreamliner is a long-range, mid-size, wide-body, twin-engine jet airliner. It is the company's most fuel-efficient airliner, designed to be 20% more fuel-efficient than the Boeing 767, which it was intended to replace. The 787's lighter composite structure reduces fuel use by up to 25% compared to other aircraft.
The 787 is the first production airliner with a fuselage made of composite barrel sections, rather than multiple aluminium sheets and fasteners used in other aircraft. This innovative design reduces the weight of the aircraft, making it more fuel-efficient. The extensive use of composite materials in the 787's construction also contributes to its fuel efficiency, as these materials are lighter and stronger than traditional aircraft materials.
The 787's engines also play a significant role in its fuel efficiency. The aircraft is powered by either Rolls-Royce Trent 1000 or General Electric GEnx engines, which offer improved performance and efficiency over older engine models. In addition, the 787 features advanced electrical systems and aerodynamic improvements, further reducing fuel consumption.
The lighter composite structure of the 787 has had a significant impact on the aviation industry. It has enabled airlines to reduce their fuel consumption, leading to cost savings and a lower environmental impact. Additionally, the fuel efficiency of the 787 has unlocked new non-stop routes that were not previously possible, further enhancing the capabilities of airlines and improving the air travel experience for passengers.
The Boeing 787's lighter composite structure, combined with efficient engines and advanced systems, has resulted in a significant reduction in fuel consumption of up to 25%. This not only makes the 787 more economically and environmentally friendly but also showcases the benefits of composite materials and advanced technologies in aircraft design.
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The 787 is powered by high-bypass turbofans from GE or Rolls-Royce
The Boeing 787 Dreamliner is a long-range, mid-size wide-body, twin-engine jet airliner. It is powered by two high-bypass turbofan engines, with customers having the option to choose between the General Electric GEnX-1B and the Rolls-Royce Trent 1000. The Rolls-Royce Trent 1000 is a high-bypass turbofan engine first tested in February 2006, over five years before entering service on the Dreamliner. The engine provides a reliable thrust range between 64,100 and 81,028 lbf, depending on the variant. The least powerful variant, the Trent 1000-E, generates 62,264 lbf at takeoff, while the more powerful Trent 1000-R delivers 81,028 lbf. The Rolls-Royce Trent 1000 engine has faced some challenges, with durability issues reported in 2018 and problems with the Trent 1000 Thrust, Efficiency, and New Technology (TEN) variant in 2019. These issues have impacted the engine's market share, with only one-third of 787 orders opting for this engine.
The General Electric GEnX engine, on the other hand, has dominated the engine market for the Boeing 787, powering approximately two-thirds of 787 aircraft. The GEnX engine has accumulated over 50 million flight hours and is one of the fastest-selling high-thrust engines in GE's history. It is developed from the GE90 engine series used on the Boeing 777 and offers several versions, each optimized for different performance needs. For example, the GEnx-1B78/P2 produces up to 80,400 lbf at takeoff, while the GEnx-1B75/P2 delivers a continuous thrust of 68,800 lbf. The GEnX engine's solid track record, advanced technology, and performance capabilities have made it a popular choice among airlines operating the Boeing 787 Dreamliner.
When selecting an engine for the Boeing 787, airlines consider various factors, including thrust capabilities, maintenance requirements, fuel efficiency, and fleet compatibility. The choice of engine depends on the specific needs and operational strategies of the airline. As of 2024, Boeing had a total of 948 Boeing 787s on order, with 48 listed as having Rolls-Royce Trent 1000 engines and 534 with the GEnx engine option. The remaining 366 aircraft had unspecified engines.
The Boeing 787 Dreamliner is designed to be 20% more fuel-efficient than its predecessor, the Boeing 767. This improvement is attributed to various factors, including engine efficiency, aerodynamic improvements, increased use of lightweight composite materials, and advanced systems. The 787 can carry 200 to 335 passengers on point-to-point routes up to 8,500 nautical miles, showcasing its long-range capabilities. The flexibility in engine choices offered by Boeing allows airlines to make informed decisions based on their specific requirements and preferences.
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Early 787s were overweight, increasing fuel burn and reducing maximum range
The Boeing 787 Dreamliner is a long-range, mid-size, wide-body, twin-engine jet airliner. It was designed to be 20% more fuel-efficient than the Boeing 767, with a range of 7,305-8,500 nautical miles (13,529-15,700 km). The 787 is powered by Rolls-Royce Trent 1000 or General Electric GEnx engines, and its airframe is made primarily of composite materials, making greater use of electrical systems.
However, early-built 787s (line numbers under 20) were overweight, which increased their fuel burn and reduced their maximum range. This issue was due to the aircraft being about 8% overweight, which resulted in a 10–15% range reduction. Boeing struggled to sell these early 787s, offering significant discounts, and some carriers decided to take later aircraft.
To address this issue, substantial redesign work was expected, which would complicate increases in production rates. Boeing stated that the weight issues would be resolved by the 21st production model. The early 787-8s were expected to have a range of almost 8,000 nautical miles (15,000 km), which is closer to the original estimates.
Despite being the smallest of the 787s, the B788-8 has a range that exceeds that of its larger counterparts. Its frame is made up of nearly 50% carbon fibre and other composite materials, offering significant weight-saving advantages over aluminium designs. The B787-8 can fly further than some of its rivals, but at the cost of passenger and cargo capacity.
Overall, the 787 Dreamliner is a pioneering airliner in terms of fuel efficiency and the use of composite materials. While early production models faced challenges with weight and range, Boeing worked to address these issues and improve the aircraft's performance.
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Frequently asked questions
The 787 Dreamliner can carry 20% less fuel than aircraft like the Boeing 767. The exact amount of fuel the 787 can hold is not publicly available.
The 787 can carry 200 to 300 passengers on point-to-point routes. The number of passengers depends on the variant of the 787 and the seating configuration. The 787-8 typically seats 248 passengers, while the 787 Dreamliner's variants seat 242 to 335 passengers in a typical 3-class seating configuration.
The 787 Dreamliner is a long-range, mid-size, wide-body, twin-engine jet airliner. It is Boeing's most fuel-efficient airliner, with a 20% improvement in fuel efficiency compared to the 767. The 787 is the first production airliner with a fuselage comprising one-piece composite barrel sections, making greater use of electrical systems. Its distinguishing features include swept wingtips and noise-reducing chevrons on its engine nacelles.







































