Ameer Randolph
The Boeing 737 is a twin-engine narrow-body aircraft that has been in production since 1997. The 737NG (Next Generation) is an upgrade of the 737 Classic series, with a redesigned wing, wider wingspan, and greater fuel capacity. The fuel consumption of a Boeing 737 varies depending on the model and flight conditions, but a general estimate is about 746.27 gallons of fuel per hour, or 12.44 gallons per minute. The 737-800, the most common variant of the 737NG family, burns 850 US gallons (3,200 litres) of jet fuel per hour. The 737-900ER (Extended Range) is the final and largest variant of the 737NG line, featuring up to two auxiliary fuel tanks in the cargo hold.
| Characteristics | Values |
|---|---|
| Fuel consumption per hour | 746.27 gallons or 3,200 litres |
| Fuel consumption per minute | 12.44 gallons |
| Fuel capacity | Greater than the 737 Classic |
| Range | Longer than the 737 Classic |
| Maximum takeoff weight (MTOW) | Higher than the 737 Classic |
| Auxiliary fuel tanks | Available on the 737-900ER and BBJ2 variants |
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What You'll Learn
The 737-800 burns 850 US gallons of jet fuel per hour
The Boeing 737-800 is a popular variant of the 737NG (Next Generation) family. It burns 850 US gallons (3,200 litres) of jet fuel every hour. This amounts to approximately 12.44 gallons of jet fuel burned per minute.
The fuel efficiency of the 737-800 can be improved by reducing the weight of the aircraft. For example, replacing steel brakes with carbon brakes can reduce the weight of the brake package by 550-700 pounds (250-320 kg), resulting in a 0.5% reduction in fuel burn. Additionally, the CFM56-7B Evolution nacelle, which entered service in mid-2011, improved fuel burn by at least 1% and offered weight benefits.
The fuel consumption of the 737-800 also depends on the flight conditions. For example, a 737-800 will consume more fuel during takeoff than during cruising altitude. Overall, a 737-800 typically consumes around 746.27 gallons of fuel per hour, which is equivalent to approximately 5,000 pounds of fuel.
The 737NG is an upgrade of the 737 Classic series, which includes the -300, -400, and -500 variants. The 737NG has a redesigned wing with a larger area, a wider wingspan, and greater fuel capacity than its predecessor. It also has higher maximum takeoff weights (MTOW) and a longer range. The 737NG series includes four variants: the -600, -700, -800, and -900, which can seat between 108 and 215 passengers.
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The 737NG has greater fuel capacity than the 737 Classic
The 737NG, or 737 Next Generation, is an upgrade of the 737 Classic series, which was first introduced in 1984 with the 737-300. The 737NG was launched in 1993 and has been in production since 1997. It features a redesigned wing with a larger area and a wider wingspan, which increases its fuel capacity compared to the 737 Classic.
The 737NG series includes four variants: the -600, -700, -800, and -900, with the -900 being the final and largest variant. The -900ER (Extended Range) has a range of up to 3,000 nautical miles, permitting transcontinental service. This extended range is due in part to the increased fuel capacity of the 737NG compared to the 737 Classic.
The 737NG also has higher maximum takeoff weights (MTOW) and a longer range than the 737 Classic. The CFM International CFM56-7 series engines on the 737NG are more fuel-efficient than the CFM56 turbofan engines on the 737 Classic. Additionally, the 737NG features a glass cockpit and upgraded and redesigned interior configurations.
The 737-800 is the most common variant of the 737NG family and has become Boeing's best-selling 737 model. It offers a good combination of range and capacity, seating up to 189 passengers. The 737NG series has been popular with airlines, with over 7,000 aircraft ordered and delivered as of May 2025.
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The 737-900ER has two auxiliary fuel tanks in the cargo hold
The 737-900ER (Extended Range) is the largest variant of the Boeing 737 NG line. It was introduced to fill the range and passenger capacity gap in Boeing's offerings and to compete with the Airbus A321. The 737-900ER has up to two auxiliary fuel tanks in the cargo hold, which, along with standard winglets, improve the range of the jet to that of other 737NG variants. The addition of these fuel tanks increases the maximum seating capacity to 220 passengers. Airlines may choose to deactivate the additional exit doors if the total configured capacity of the plane is 189 passengers or fewer.
The 737-900ER was launched in July 2005 and first flew in September 2006. The first plane was delivered to its launch customer, the Indonesian low-cost airline Lion Air, on April 27, 2007. The 737-900ER is based on the 737-900, which it aimed to improve upon. The 737NG line is an upgrade of the 737 Classic series, featuring a redesigned wing with a larger area, a wider wingspan, greater fuel capacity, and higher maximum takeoff weights. The 737NG includes four variants: the -600, -700, -800, and -900, seating between 108 and 215 passengers.
The 737-900ER is also longer than the BBJ2, which is based on the 737-800. The BBJ2 has 25% more cabin space and twice the baggage space but a slightly reduced range. The BBJ3, which is based on the 737-900ER, is approximately 16 feet longer than the BBJ2 and also has a slightly shorter range. As of July 2018, 6,343 Boeing 737 Next Generation aircraft were in commercial service.
The 737-900ER is also offered with Messier-Bugatti-Dowty's new carbon brakes, which reduce the weight of the brake package by 550-700 pounds, resulting in a 0.5% reduction in fuel burn. The 737-900ER also comes standard with the CFM56-7B Evolution nacelle, which improves overall drag and weight, resulting in a 2% improvement in fuel burn on longer stages. These enhancements are part of the Short Field Performance package, which is optional for the 737NG models.
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The BBJ2 is based on the 737-800 but has a reduced range
The Boeing 737 is a twin-engine narrow-body aircraft produced by Boeing Commercial Airplanes. Launched in 1993, it has been in production since 1997. The 737 has greater fuel capacity than its predecessor, the 737 Classic, and a longer range. The 737-800, the most common variant of the 737NG (Next Generation) family, burns 850 US gallons (3,200 L) of jet fuel per hour.
The BBJ2 is a version of the Boeing 737-800. It was launched in 1999 and is 19 ft 2 in (5.84 m) longer than the BBJ1, with 25% more cabin space and twice the baggage space. However, the BBJ2 has a slightly reduced range compared to the 737-800. The BBJ2 is designed to serve the private, head of state, and corporate jet market. It has a maximum takeoff weight of 79,015 kg (174,200 lb) and a range of around 6,000 nautical miles.
The BBJ2 is equipped with auxiliary fuel tanks in the cargo hold and winglets. It typically operates with a weight of 45,730 kg (100,815 lb) when empty. The BBJ2 offers improved fuel efficiency compared to earlier models, with a 15% reduction in fuel burn. This is achieved through the use of new CFM LEAP-1B engines, improved aerodynamics, and other system upgrades.
The BBJ2 has a longer range than the 737-800, which is attributed to its fuel capacity and engine performance. The BBJ2's range enables long-haul flights, such as from Dallas to Stockholm. However, the specific range achieved can vary depending on factors such as fuel load, payload, and flight conditions.
The BBJ series has been popular, with over 260 BBJs delivered since its introduction. The BBJ2, specifically, has had 8 orders with 5 deliveries as of February 2002. The BBJ3, based on the 737-900ER, is the next evolution of the BBJ series, offering even greater range and capacity.
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A Boeing 737 uses around 746.27 gallons of fuel per hour
A Boeing 737 uses approximately 746.27 gallons of fuel per hour. This estimate is based on typical data for this aircraft and is widely acknowledged in aviation studies and engineering references. The actual fuel consumption of a Boeing 737 may vary depending on the model and flight conditions. For example, the 737-800 variant, which is the most common version of the 737NG (Next Generation) family, burns 850 US gallons (3,200 litres) of jet fuel per hour.
The Boeing 737 Next Generation series, commonly abbreviated as 737NG or 737 Next Gen, is a twin-engine narrow-body aircraft produced by Boeing Commercial Airplanes. Launched in 1993 and in production since 1997, the 737NG is an upgrade of the 737 Classic series, offering a redesigned wing with a larger area, a wider wingspan, greater fuel capacity, and higher maximum takeoff weights (MTOW). The series includes four variants: the -600, -700, -800, and -900, seating between 108 and 215 passengers.
The 737NG's primary competition is the Airbus A320 family. As of May 2025, a total of 7,126 737NG aircraft had been ordered, with 7,116 delivered. Boeing stopped assembling commercial 737NGs in 2019 and made its final deliveries in January 2020.
To improve fuel efficiency, Boeing introduced new carbon brakes for the Next-Gen 737s in July 2008, reducing the weight of the brake package by 550-700 pounds (250-320 kg). This weight reduction results in a 0.5% reduction in fuel burn. Additionally, the CFM56-7B Evolution nacelle, tested in August 2009 and intended for the new 737 PIP (Performance Improvement Package), is claimed to improve fuel burn by at least 1% on longer stages.
The 737-900ER (Extended Range) is the final and largest variant of the 737 NG line. Introduced to address range and passenger capacity gaps, this variant features up to two auxiliary fuel tanks in the cargo hold and standard winglets, improving its range to match other 737NG variants. The 737-900ER also increased the maximum seating capacity to 220 passengers.
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Frequently asked questions
The fuel capacity depends on the 737 model. The 737-800 burns 850 US gallons (3,200 litres) of jet fuel per hour, while the 737-900ER has two auxiliary fuel tanks in the cargo hold. The 737NG has greater fuel capacity than the 737 Classic.
A Boeing 737 typically uses around 746.27 gallons of fuel per hour or 12.44 gallons per minute.
The fuel consumption of a Boeing 737 depends on the model and flight conditions. A commonly cited figure for fuel usage is approximately 5,000 pounds.
The 737NG's primary competition is the Airbus A320 family. The 737NG has a longer range than the Airbus A320.
