Why do planes fly over Greenland when crossing the Atlantic?

Why do between the US & Europe go far north, sometimes over Greenland? Most people assume this is to remain as close as possible to land in case of an emergency — i.e. keeping close to airports in case a diversion is needed. In fact has nothing to do with emergencies. It's simply the shortest distance.



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This route is called a geodesic or great circle. While map projections distort these routes confusing passengers, the great circle path is the shortest path between two far locations. This is why pilots fly polar routes saving time and distance. And this is why pilots often fly over Greenland.

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Planes do not fly in a straight line directly over the Atlantic Ocean because of the curvature of the Earth. The shortest distance between two points on Earth follows a curve called an ellipse. Planes can also encounter strong winds that would push them off course.

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Because of its vast size, crossing the Pacific Ocean requires a staggering quantity of fuel. However, most commercial aircraft do not fly directly over the Pacific Ocean; instead, they choose what are known as 'curved paths'. These paths offers a faster, more efficient route given the curved nature of the earth.

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Most commercial airlines that travel between East Asia and the Americas avoid flying over the Pacific Ocean due to high costs and safety concerns, such as the risk of flying during stormy weather.

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They usually don't fly over Mt. Everest. Of course, plenty of aircraft are able to get to the necessary altitude. You can look up the ceiling for whatever airplane you're interested in, but for example the newest 747 can get to 43,100 feet/13,100 meter, over 4 kilometers over Mt.

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When flying over land, of course it is more likely that there will be more airfields closer to the aircraft at any given time. However, because of lessons learned from its history and the improvements in aircraft and engine reliability, crossing the oceans is deemed as safe as flying over land.

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What is the longest flight in the world by distance? The longest flight in the world by distance is New York (JFK) to Singapore (SIN) on Singapore Airlines clocking in at 9,537 miles. What plane can fly the farthest in the world?

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That's because it is, and there is a very simple reason for it. Despite what many people believe, the answer actually has nothing to do with safety. The real answer is because going north may actually provide a shorter route. This is called Great Circle Navigation.

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The Loganair Westray to Papa Westray route is the shortest scheduled passenger flight in the world. Flights on the route are scheduled for one and a half minutes, and actual flying time is closer to one minute. The record for the fastest flight is 53 seconds.

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The twice-weekly Air Canada service between London Heathrow and St John's, the capital of Newfoundland and Labrador, is the flight with the shortest route across the Atlantic, stretching just 2,315 miles and taking under five hours.

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The airlines use the last hours of the day and the first hours of the night to catch up on delays and ensure their aircraft are in the right place for the next day. Night Flights allow the budget airlines and the non-scheduled airlines (usually operating holiday charter flights) to make full use of their aircraft.

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Because the Earth is a three-dimensional sphere and not merely a two-dimensional flat, East-West surface. Because of this spherical shape, often times the shortest distance is flying more north and south, up over the Northern latitudes and the North Pole, rather than flying east/west over the Pacific.

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The most common reason is that there are no airstrips or airports on many of the small islands, so if a plane had to make an emergency landing, it would be difficult to find a place to land. Additionally, the Pacific Ocean is vast and remote, so if a plane were to go down, it would be very difficult to find.

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