What are typical cruising speeds on commercial jets (in mach)? 0.86, 0.84, or more like 0.74?

Question

What are typical cruising speeds on commercial jets (in mach)? 0.86, 0.84, or more like 0.74?

Answer 1

advertised cruise speeds of newer aircraft are in the Mach 0.80 and up.

older aircraft, from the 70s and 80s, have advertised cruise speeds of mach 0.74 and up.

actually, the aircraft will not fly at those speeds especially on longer routes. Like the 777: It can cruise at Mach 0.84, but it usually stays around mach. 0.80 or even 0.78

to generalize, subtract 0.2 to the advertised mach cruising speed. most airlines will fly at those speeds.

at 35,000 feet, mach 0.76=516.04 mph (overground)

mach 0.78= 529.62 mph (overground)

mach 0.80=543.2 mph(overground)

mach 0.84= 570.36 mph(overground)

Answer 2

747 cruises at M=0.86.  Some airlines go slower to save fuel.

Answer 3

I've had to slow down a number of times in a couple of the  business jets when in trail of an airliner. The airliners I hear on frequency seem to be anywhere from .74 to .78 (high altitude sectors, mostly western U.S.) For the past 3 years or so. Used to hear higher readouts (like .80 or .82) many years ago. Have heard Southwest at the lower end of that range (like .74-.76) a number of times when asked by ATC.

(You asked for "typical speeds".)

Answer 4

For older  aircraft like the 1965  B-727 mach .79 is close to the long range cruise speed.  It usually cruises between mach .80 mach and mach .84.

Answer 5

Usually in the range of 0.80-0.85. The Boeing 777 cruises at Mach 0.84, the A330 Mach 0.82-.83, smaller jets like the 737 cruise between 0.78-0.80. The A380 cruises at 0.85(manufacturers range)

Answer 6

first off... BOEING 777-300ER FTW!

second, .84, .85

Answer 7

That all depends on the type of Aircraft, how much fuel it can carry, the engines , the weight of the aircraft,  and the range due to the Fuel Consumption and the Engines.

Your best bet is to just Google the aircraft your curious about and type "Specs" after it. This will always bring you to a website from the Aircraft Manufacturers Site of fan sites with the info.