# Why are flights longer on the way back?

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The reason it took so much longer to fly back is the jet stream, a river of fast-moving air high up in the sky. Jet streams are usually about 100 miles wide. They can be thousands of miles long and are found all over the earth. To be called a jet stream, the wind must be moving faster than 60 mph.

## Why does it take longer to fly south than north?

As you move north (or south) from the equator, you are moving closer to the axis of the Earth and so the air which started at the equator and moved north (or south) will be moving faster than the ground it is over (it has the rotation speed of the ground at the equator, not the ground which is is now over).

## Why are flight times longer going west?

The main reason for the difference in travel time is due to the jet stream. The jet stream is high altitude wind that blows from the west to the east across the globe. Airplanes fly into the jet stream at 30,000 feet and then travel with these winds. … However, a plane flying to the west would be going against the winds.

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## Does it take longer to fly against the Earth’s rotation?

Actually, flying west to LA takes about an hour longer than flying the return trip, but not directly because of the earth’s rotation. Instead, the earth’s rotation affects the way the wind blows on our planet.

## Why do planes avoid flying over the Pacific?

The primary reason airplanes don’t fly over the Pacific Ocean is because curved routes are shorter than straight routes. Flat maps are somewhat confusing because the Earth itself isn’t flat. Rather, it’s spherical. As a result, straight routes don’t offer the shortest distance between two locations.

## Why do flights from East to West take longer?

The reason it took so much longer to fly back is the jet stream, a river of fast-moving air high up in the sky. Jet streams are usually about 100 miles wide. … Jet streams generally blow from the west to the east around the Earth, often following a meandering, curved path just like a river on land.

## What speed does an airplane take off at?

Typical takeoff air speeds for jetliners are in the range of 240–285 km/h (130–154 kn; 149–177 mph). Light aircraft, such as a Cessna 150, take off at around 100 km/h (54 kn; 62 mph). Ultralights have even lower takeoff speeds.

## What speed does the Earth rotate?

The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. Thus, the surface of the earth at the equator moves at a speed of 460 meters per second–or roughly 1,000 miles per hour.

## Are flights longer East to West?

Jet streams are, at their most basic, high-altitude air currents caused by atmospheric heating and the inertia of the earth’s rotation—and they’re the reason why flights from west to east are faster than the same route traversed in the opposite direction.

## Can you go back in time by flying west?

Technically, yes, if you travel west, you’ll travel into earlier time zones, and you’ll keep setting your clock back. If you can cross a time zone an hour, you’ll stay at the same time of day.

## Why do planes look like they’re not moving?

Clouds move or change shape. Our eye muscles are not good at keeping a steady gaze. As result our own movement adds or subtracts to perceived speed of the plane. A similar problem is statues seemingly moving or nodding at believers.

## Why don’t we fly off the earth if it’s spinning?

Normally, humans aren’t thrown off the moving Earth because gravity is holding us down. However, because we are rotating with the Earth, a ‘centrifugal force’ pushes us outwards from the centre of the planet. If this centrifugal force were bigger than the force of gravity, then we would be thrown into space.

## Do airplanes have keys?

So, Do Airplanes Have Keys? Some smaller aircraft, including the Cessna, have ignition keys that are needed to start the engine, while many larger planes do not use keys. As a general rule, larger commercial planes typically do not have keys.

## Do planes fly over Everest?

Airplanes often avoid air paths that take them over Mt Everest or the Pacific Ocean. … This is because “the Himalayas have mountains higher than 20,000 feet, including Mt Everest standing at 29,035 feet. However, most commercial airplanes can fly at 30,000 feet.”

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## Why do pilots say heavy?

When a pilot uses the phrase “heavy,” he is reminding ATC that his aircraft is large and requires more separation between it and the aircraft following.

## Can a Boeing 777 fly on one engine?

Wide-body aircraft like the Boeing 777 are rated to fly for more than five hours on a single engine. Visit the Business section of Insider for more stories.