Maximum Range: 3,115 nautical miles (5,765 km) [2-class with winglets]
Typical Cruise Speed at 35,000 feet: Mach 0.78 (511 mph, 823 km/h – 444 Knots)

DIMENSIONS:
Wing Span : 112 ft 7 in (34.3 m)
With Winglets: 117 ft 5 in (35.8 m)
Overall Length : 129 ft 6 in (39.5 m)
Tail Height: 41 ft 2 in (12.5 m)
Interior Cabin Width: 11 ft 7 in (3.53 m)

The 737-800 is a stretched version of the 737-700. The −800 was launched by Hapag-Lloyd Flug (now TUIfly) in 1994 and entered service in 1998. The 737-800 seats 162 passengers in a two-class layout, or 189 in one class, and competes with the A320.

The 737-800 is also among the models replacing the McDonnell Douglas MD-80 series aircraft in airline service; it burns 850 US gallons (3,200 L) of jet fuel per hour, or about 80 percent of the fuel needed by an MD-80 on a comparable flight, even while carrying more passengers than the latter.[30] According to the Airline Monitor, an industry publication, a 737-800 burns 4.88 US gallons (18.5 L) of fuel per seat per hour.

On August 14, 2008, American Airlines announced 26 orders for the 737-800 (20 are exercised options from previously signed contracts and six are new incremental orders) as well as accelerated deliveries. As of September 2015, 3,780 -800, 52 -800A, and 21 -800 BBJ2 aircraft have been delivered with 1,180 unfilled orders. Ryanair, an Irish low-cost airline is among the largest operators of the Boeing 737-800, with a fleet of over 300 aircraft serving routes across Europe and North Africa.

In 2011 United Airlines said it operated the first U.S. commercial flight powered by a blend of algae-derived biofuel and traditional jet fuel flying a Boeing 737-800 from Houston to Chicago to reduce its carbon footprint.