How fast do passenger planes fly at cruising speed?

Answer 1

500 to 600 MPH. They cannot break sound barrier (approximately 769 MPH @ sea level) or the aircraft would break up. Good gas mileage when traveling in a jet stream. Made one trip from Japan to California @ approximately 700 MPH while in jet stream.

Answer 2

Companies don't have unlimited funding, everything costs. Concorde was too expensive to operate, every time it landed it caused headache to operation managers. Answer to your question is: aerodynamics, technology and fuel. We are already using maximum efficiency in terms of altitude, and the speed we can get up there is close to maximum. What created "the maximum"? Engines, fuselage, materials, physics limits. Drag particularly - the faster you go, the price of operations goes to square of the increase in speed. You fly passenger jet too fast, and it'll break apart in mid air. Want to make it stronger? Then try to lift the weight off the ground... We may have the technology available for commercial use, in the distant future. Boeing 7E7 supposed to be a performer - companies didn't show interest, they'd rather chose fuel efficient aircraft, so 787 was born. A350 same story, it's all about saving the bucks, airlines don't really care how long it will take if they can squeeze few cents, actually the flying times are longer today than they were few decades ago.

Answer 3

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Physics, thermodynamics, and fuel costs! Much faster than that and the airflow around some areas starts to reach the speed of sound, Below the speed of sound airflow acts as an incompressible fluid. As you reach the speed of sound, the air molecules start to be compressed together. That effects the aerodynamics, which is why planes to be flown at supersonic speed have to be designed for supersonic flight, but it also increases drag about 10 fold. At subsonic speed you are using energy because the plane is transferring kinetic energy to the air as you move it out of the way of the plane, and divert it downward for lift. At super sonic speeds, not only are you doing that, by you end up using energy to compress and heat the air. (Heat is side effect of compressing a gas) Increased drag means increased fuel burn, which means increased cost, which means decreased profits for the airline. Most airliners today are a little slower than jet airliners 30 years ago, and they do not fly at maximum speed. Even at subsonic speeds it drag increases at the square of speed: it takes 4 times the thrust to travel twice as fast. You can save a lot of fuel by slowing down a little bit.

Answer 4

First of all airplanes do not necessarily break if they exceed the speed of sound - it just has to be done at a high altitude, but the airplane controls get sluggish and it's not very fuel efficient. Second of all the A380 is not the fastest commercial jetliner - most boeings are faster especially the B747 classic. Generally the travel around 550 mph

Answer 5

Usually around 560 mph but they can go faster or slower depending on wind. Also, they don't use full engine power when cruising anyway, so most of them can do well over 600 mph.

Answer 6

The large airplanes fly between 500 to 575.

On landing it is about 125 plus or minus depends make and model.

The Kid

Answer 7

Mach .785(Boeing 737) to Mach .86(Boeing 777) which is 530-580mph

Answer 8

Modern planes like the Airbus A380, the fastest commercial jet in existence(for now at least) fly at 0.85 mach which is 550m/hr

Answer 9

I think it is about 510 mph , the last time I looked, for a commercial jetliner.

Answer 10

technically i just flew from lax-london and it showed 610mph on an airbus a380