How fast and high do passenger planes fly?

Short answer

Passenger jets cruise between 9,000 and 12,500 m (30,000-41,000 ft), almost always around 10,000-11,000 m, flying at Mach 0.78-0.85, roughly 830-900 km/h through the air (450-490 kn). Regional turboprops stay at 6,000-7,600 m and about 500-650 km/h; business jets climb as high as 15,500 m (51,000 ft).

Published: September 21, 2026 · Updated: September 21, 2026 · Edited by Above Ten Thousand · Editorial policy

How fast and high do passenger planes fly?

Shock wave above airliner wing (1)Olivier Cleynen (CC BY SA), vía commons

Altitude: the 10,000-meter band

A commercial jet almost always cruises between 9,000 and 12,500 m, that is, between flight levels FL300 and FL410 (30,000-41,000 ft). The reason is economic: at that height air density is a quarter of what it is at sea level, drag drops, and engines burn much less fuel per kilometer; flying higher stops paying off because the wings need more speed to generate lift and the engines lose thrust. The certified ceiling of an A320 or 737 is 12,500 m (41,000 ft); that of a 787 or A350 is 13,100 m (43,000 ft). Business jets, lighter and with smaller wings, can reach 15,500 m (51,000 ft), while regional turboprops like the ATR 72 top out at 7,600 m (25,000 ft).

Altitude isn't fixed: an aircraft usually departs toward an initial level and steps upward as it burns fuel and gets lighter, always within the level cleared by air traffic control.

Speed: Mach 0.78 to 0.85

In cruise, single-aisle jets fly at Mach 0.78-0.80 and wide-body jets at Mach 0.82-0.85. At 11,000 m sound travels at around 1,060 km/h, so that works out to 830-900 km/h through the air (450-490 kn). Over the ground the figure changes with wind: with a tailwind jet stream, a North Atlantic flight can exceed 1,100 km/h of groundspeed, while with a headwind it can drop to 750 km/h. Turboprops fly at 500-650 km/h.

Other phases of flight

On takeoff a jet rotates at 260-300 km/h (140-160 kn) depending on weight; on final approach it flies at 250-280 km/h and touches down at around 240 km/h. Below 3,050 m (10,000 ft) speed is capped at 250 kn (463 km/h) in most airspace, which explains why a short flight spends much of its time well below cruise speed.