Is it easier to fly east or west?

Do you get more jet lag travelling east than west? Science has an answer for this one, and that answer is yes, it is more difficult for a human body to travel east than west. A study published in 2016 crunched the numbers on why travelling east is worse for jet lag.



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Most people find that jet lag is worse when traveling east than it is when traveling west. View Source . Jet lag differs based on the direction of travel because it's generally easier to delay your internal clock than advance it. Jet lag does not occur on north-south flights that do not cross multiple time zones.

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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.

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Currently, the bragging rights for the longest flight in the world belong to Singapore Airlines' New York City to Singapore route. Its longest flight path, which connects Singapore's Changi Airport with New York's John F. Kennedy International Airport, 9,585 miles away, takes 18 hours and 40 minutes.

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It's been established that the Pacific Ocean is big ... really big. And with greater distances come greater costs since the plane needs more fuel. Executive Flyers writes that while you could just charge passengers more to fly that distance, this may lead to lots of unhappy customers and airlines losing out on sales.

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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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Duration of Jet Lag: How Long It Lasts Researchers have found that, on average, it takes people about one day to adjust for each 1 to 1.5 hours of time change. So if you fly from the East Coast to the West Coast, which is a three-hour time difference, you should be over your jet lag in two to three days.

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The focus of treatment is on alleviating symptoms using a type of displacement exercise like jogging, walking, or bicycling. Medications that lower the activity of brain circuits and nerves involved in balance have also proven helpful to many people living with disembarkment syndrome.

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Lower oxygen levels contribute to the fatigue you're feeling. Because plane cabins are pressurized to simulate a 6,000-8,000 feet elevation, your blood absorbs less oxygen at those altitudes. This can cause dizziness, sleepiness, and a lack of mental sharpness.

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If you cross the International Date Line on a journey towards the east, then 24 hours are subtracted from your time. If you cross it when going west, then 24 hours are added to your time. Similarly, for every 15° crossed when heading east, you earn an hour and for every 15° crossed when heading west, you lose one.

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