How Fast Do Planes Fly?

The Quick Answer

Most commercial airliners cruise at 550 to 600 mph (about 475 to 520 knots). That's roughly 80 to 85 percent of the speed of sound. A typical domestic flight crosses the country at a speed that would get you from New York to Los Angeles in about five hours — and that's exactly what happens.

But speed in aviation is more complicated than a single number. There are different types of speed, and the number you see on your seatback screen doesn't always mean what you think it means.

Cruising Speeds by Aircraft Type

Not all commercial planes fly at the same speed. Here's how the most common types compare:

• Boeing 737: Mach 0.74 to 0.79 (about 567 to 606 mph)
• Airbus A320: Mach 0.78 (about 560 mph)
• Boeing 787 Dreamliner: Mach 0.85 (about 590 mph)
• Airbus A350: Mach 0.85 (about 590 mph)
• Boeing 777: Mach 0.84 (about 585 mph)
• Boeing 747-8: Mach 0.855 (about 595 mph) — the fastest commercial jet in regular service

The differences aren't huge, but they add up on long flights. A plane cruising at Mach 0.85 versus Mach 0.78 will arrive noticeably sooner on a transatlantic crossing. On a seven-hour flight, that speed difference could mean arriving 20 to 30 minutes earlier. It's one reason airlines choose specific aircraft types for certain routes.

Airspeed vs. Ground Speed: Why It Matters

This is where most people get confused. There are two main types of speed that matter in aviation.

Airspeed

Airspeed is how fast the plane is moving through the air around it. This is what pilots care about because it determines aerodynamic performance — whether the wings generate enough lift, whether the engines are in their efficient range, and whether the plane is flying safely.

Ground Speed

Ground speed is how fast you're actually covering distance over the earth's surface. This is what determines how quickly you get from point A to point B. It's your airspeed plus or minus the wind.

Here's the thing: at 35,000 feet, winds can be ferocious. The jet stream — a river of fast-moving air at high altitude — regularly blows at 100 to 200 mph. If you're flying east with the jet stream behind you, your ground speed might be 700 mph even though your airspeed is only 550 mph. Flying west against it, you might only manage 400 mph over the ground.

That's why flights from the U.S. to Europe are typically an hour shorter than the return trip. Same plane, same airspeed — different ground speed because of the jet stream.

The Fastest a Commercial Plane Has Ever Gone

In a famous incident, a British Airways Boeing 747-400 hit a ground speed of 825 mph on a New York to London flight. That's faster than the speed of sound (767 mph at sea level). But the plane wasn't actually flying supersonic — its airspeed was normal. It was riding a jet stream with tailwinds exceeding 200 mph. The air around the plane was still moving subsonically over the wings.

The Concorde, which retired in 2003, was the last commercial aircraft to routinely fly supersonic. It cruised at Mach 2.04 — about 1,354 mph. Nothing currently in commercial service comes close, though several companies are working on next-generation supersonic aircraft that could bring back faster-than-sound commercial travel in the coming decades.

Why Don't Planes Fly Faster?

If the technology exists to fly faster, why do airlines stick to Mach 0.85? Three reasons.

Fuel Efficiency

As a plane approaches the speed of sound, drag increases dramatically. This phenomenon, called "wave drag," means you'd need massively more fuel to go even a little faster. The Concorde burned about four times more fuel per passenger mile than a modern subsonic jet. Airlines are in the business of moving people cheaply, and the sweet spot for fuel efficiency is around Mach 0.80 to 0.85.

Structural Limits

Every aircraft has a maximum operating speed called Vmo (velocity maximum operating) or Mmo (Mach maximum operating). Exceeding this speed can cause structural problems — control surfaces may not work properly, vibrations can develop, and in extreme cases the aircraft could be damaged. Commercial jets are designed to cruise comfortably below these limits.

Economics

Flying 10% faster would save maybe 30 minutes on a cross-country flight but would cost significantly more in fuel. Passengers generally aren't willing to pay enough extra to justify the cost. The Concorde proved this — it was an engineering marvel that never made economic sense.

Airlines have actually gotten slightly slower over the decades, not faster. In the 1960s, airlines sometimes flew at higher speeds because fuel was cheap. Today, with fuel being one of the biggest operating expenses, airlines cruise at the most economical speed rather than the fastest possible speed. Your flight might take 20 minutes longer than the same route in 1970, but your ticket costs a fraction of the price in inflation-adjusted dollars.

Takeoff and Landing Speeds

Planes don't just jump to 550 mph. Here's what happens at the other end of the speed range.

Takeoff Speed

Most commercial jets lift off the runway at 160 to 180 mph, depending on the aircraft type, weight, and conditions. A fully loaded Boeing 747 needs a higher speed than a lightly loaded 737. The takeoff roll — from standstill to liftoff — takes about 30 to 35 seconds on a typical runway.

Landing Speed

Commercial planes touch down at 130 to 160 mph. Pilots deploy flaps and slats — movable panels on the wings — to increase lift at lower speeds, which allows the plane to fly slowly enough to land safely. After touchdown, thrust reversers and brakes bring the plane to taxi speed within about 30 seconds.

Landing speed varies more than takeoff speed because it depends heavily on how much fuel has been burned during the flight. A plane that's been flying for 12 hours has burned off tens of thousands of pounds of fuel, so it's much lighter and can land at a lower speed. A short hop where the plane is still heavy requires a faster approach.

What About the Speed of Sound?

The speed of sound isn't a fixed number. It varies with temperature and altitude. At sea level on a standard day, it's about 767 mph. At 35,000 feet where the air is much colder, it drops to about 660 mph.

This is why aviation uses Mach numbers instead of mph. Mach 0.85 means 85% of the speed of sound at whatever altitude and temperature the plane is flying in. It's a more useful measurement because the aerodynamic effects that matter — like wave drag — are related to Mach number, not raw speed.

When your seatback screen shows 585 mph, that's usually ground speed. The plane's true airspeed might be different, and its Mach number is what the pilots are actually monitoring.

The Bottom Line

Commercial planes cruise at about 550 to 600 mph — fast enough to cross an ocean in hours but slow enough to keep fuel costs reasonable. The speed of sound acts as a practical speed limit for economics, not physics. And the number on your screen is ground speed, which can vary wildly depending on whether the jet stream is helping or fighting you.

Next time your flight lands early, thank the wind. Next time it's late, blame it too.