Non-stop madness: How long-haul flights affect your mind

Long-haul travel is as common as cola. We're flying ever greater distances more often and non-stop, like 19 hours from Singapore to New York. But the psychological and biological effects are under-researched.

It seems I have subconsciously developed a coping strategy. When I fly long-haul, I tell myself I'm entering a tunnel, there's nothing I can do but sit tight, and at some point, whether it's 24 hours later in Australia, or after 19 hours non-stop to the US, I'll get out at the other end. All that happens in between can be a complete blur for all I care.

Occasionally, I will allow the odd passenger to rile me — when stragglers boarding late rub their bums and bellies in my face, or let the straps on their bags whiplash my head.

Read more: Trains vs. planes: What's the real cost of travel?

Other than that I am automatic zen. You certainly won't find me defecating in an aisle, as, I am told, a crazed passenger once did on a long-haul flight with Qantas.

I won't even get angry or anxious — as some studies suggest people do — while walking through the perceived luxury of first, business or premium economy class. I am happy sitting out back with the rest of the cattle, because I know that if we go down, we're all going down. Ultimately, ashes is ashes, no matter where you sit in life.

How the other half lives: Lufthansa's first-class cabin

But the thing is, zen is not really me. As an out-of-the-closet neurotic, I'm usually anything but zen.

So what's happening? Why do I think I'm zen when I'm not? Perhaps I'm not getting enough oxygen to be my usual aggro self.

Why do other passengers get stressed, anxious, angry, sleepy, or emotional and teary?

For the amount of travel we do as a global population — and increasingly so in middle and high-income countries — there is surprisingly little research on the effects of airline travel.

However, there is some. And it shows that commercial air travel affects us even before we board the plane.

Infografik die längsten Flugrouten EN

Pre-flight nerves

Getting to the airport on time, checking in, dropping off bags, waiting in the departure lounge, getting the seat you want (aisle or window, madam?), dealing with delays, gate changes, last minute toilet runs with the kids … all this is part of modern travel. It's an activity that we have come to take for granted. But none of this distracts from the fact that air travel means sitting in a tin tube for a fixed amount of time, with no control over the situation. Flying really is one of the least natural things humans do.

And it's not just anxiety about takeoff and landing — two of the times when planes are at their highest risk of failing.

"There are some people who have high levels of anxiety related to air travel itself. The whole thing about being in the air and being a long way off the ground is clearly worrisome for some people," said Dr. Vivien Swanson, a reader in psychology at the University of Stirling. "And there are people who have phobias, like claustrophobia, the whole thing of being in a confined space and out of control. It can be very stressful, and some people choose not to fly for that reason."

Air travel can be something of a hassle before you ever set foot on a plane

Death awareness and shopping

Some people 'self-medicate' to deal with their anxiety. You might drink alcohol, take prescription drugs or illegal ones — not that we'd advise any of that, certainly not to excess and definitely not the illegal stuff.

Other people try shopping.

Just walking through an airport can be enough to raise your stress levels, with all the reminders of human mortality. Security checks, bomb alerts, armed police — it's a stressful sight. It's what's called death-awareness, and it's pushed to extremes at airports.

That may be why — aside from the lure of brazen capitalism — airports have been converted to resemble shopping malls. We're distracted by the promise of buying nice, new things.

A study at Las Vegas International Airport investigated the effects of consumerism on air travelers. The study suggested shopping "helped with the anxiety individuals felt while in the airport."

But that's just how we deal with anxiety on the ground.

"There is a possibility of passengers taking their anxiety on planes and it manifesting itself inflight in quite dangerous ways, such as having a mental breakdown at 40,000 feet," one of the study's co-authors, Dr. Lindsey Harvell-Bowman from James Madison University, wrote to DW by email. "It could also affect how they interact with others, like being rude." 

Helgoland Inselvergrößerung Flash-Galerie

Duty free shopping: Retail therapy for anxious travelers

Oxygen deficit

The actual conditions onboard a plane can also take their toll.

When we fly, we suffer a mild form of hypoxia, a condition brought on by reduced levels of oxygen in the blood. That can affect the human immune system, cause sleepiness, confusion, heighten emotional states — making us cry about crappy films, or angry, anxious or rude. And, of course, if you're self-medicating, the drugs and alcohol won't help.

Commercial planes fly at about 11,000 meters (36,000 feet). At that altitude, we'd get severe hypoxia, which can cause organ failure. So cabin pressure is regulated to the equivalent of about 2,000 meters (6,561 feet), but that's still bad enough to lower our oxygen levels. So why not just substitute oxygen artificially?

"You could substitute oxygen in aircraft from a technical point of view, but the aircraft would have to carry pressure tanks to do that," said Dr. Jochen Hinkelbein, president of the German Society of Aviation and Space Medicine (DGLRM).

"You would also need thicker walls, and that would increase the weight of the aircraft significantly," he says. "So it would make long-haul flights impossible. It would reduce the number of passengers and increase costs significantly." 

Afraid to fly? There are seminars for that, like this one in Hanover, Germany

It would also cancel out 19-hour non-stops flights, like Singapore Airlines' A350-900ULR service from Singapore to New York. But already there they have had to economize — ironically, there's no economy class.

"And there's no medical reason to do it, because the oxygen content and pressure in an aircraft cabin while flying is usually enough for fit and healthy people for them not to have relevant hypoxia symptoms," Hinkelbein added.

But that's just the passengers, and the healthy ones at that. What about the sick or elderly? And what about pilots and their crew?

What goes for passengers goes for pilots

A 'position statement' published by The British Psychology Society says crew members and pilots can suffer from fatigue, caused by jetlag, unsocial working hours, 12-hour shifts, and the stress that comes with normal life, like juggling family commitments at home. As a result, some self-medicate with alcohol, "substance abuse" or otherwise. And, unfortunately, as in other sectors of society, pilots are unlikely to speak about their problems or seek medical help for fear of losing their license.

"The ability of the brain to function may become compromised at any time," write the authors of "Aviation and aerospace psychology: Pilot mental health and wellbeing."

Imagine getting on the right plane, with the wrong pilot, on an ultra-long-haul flight.

Scary isn't the word.

And it's hard to tell whether your anxiety would get any better as you get accustomed to your predicament, or worse. More research is needed, so the saying goes.

As for Singapore Airlines and its ultra-long-haul to New York, the company first fobbed us off and told us to ask the experts. When we prodded the airline they said the well-being of their customers was "key" and that, in view of their longest non-stop flight, they had formed a "cooperation with top experts in the field." That's nice to know.

The Airbus A380 a birthday kid with wrinkles

The giant

The A380 is simply impressive and puts almost every other competitor on the airfield in the shadow — literally. With a length of 72.7 meters (238 feet) the plane has a wingspan of 79.8 meters and is over 24 meters tall. On its two decks, the airline Emirates can accommodate 489 passengers in its three-class extra-wide-room version, and up to 615 passengers in its two-class long-range model.

The Airbus A380 a birthday kid with wrinkles

The first landing

On April 27, 2005 the first official flight of the giant took place. After 3 hours and 54 minutes in the air, it landed safely. At the time it seemed inconceivable to fly with less than four engines. Since then it has become clear that a mere two turbines are enough to carry such giants — and for significantly less money. Yet developing this technology would likely run into the billions.

The Airbus A380 a birthday kid with wrinkles

The original

Singapore Airlines was the first airline to deploy the A380. Here the proud new owners are shown on the tarmac in Toulouse — gathered together to document the great day. Back then on October 15, 2007, the future of passenger flying was still seen in terms of size: The more passengers transported at once, the more profit for the airline.

The Airbus A380 a birthday kid with wrinkles

The beginning of an era?

The giant passenger jet was also well received by travelers. They weren't bothered that the boarding of so many passengers sometimes took a bit longer. However, the infrastructure of most airports is overwhelmed by the gigantic A380. For this reason, the aircraft flies most frequently between major airports like London, Frankfurt, New York and Singapore.

The Airbus A380 a birthday kid with wrinkles

A Herculean task

It's not just competitors like Boeing that make life for Airbus difficult. The company's own structure is demanding and hinders streamlining. Individual components for the aircraft are manufactured in France, Germany, Spain, Great Britain, China and the USA. That's why the body of a giant A380 can be seen on a country road once in a while.

The Airbus A380 a birthday kid with wrinkles

A worrying trend

Naturally, smaller planes are selling better than mega aircraft like the A380 — here the shell of the first model. Despite this commonly acknowledged fact, declining sales figures are a cause for concern. Last year only 28 A380s were delivered. This year it will be 15. Next year only 12 will leave the workshop. By 2019, Airbus only expects to deliver eight.

The Airbus A380 a birthday kid with wrinkles

The end of an era?

Whatever the future of the A380 will actually look like, it is certain that Airbus has just ended a successful era. At the end of this year, the company's chief salesman, John Leahy, will retire. In his 23 years, he had been able to sell 15,500 aircraft for around $1.7 trillion. His successor will be measured by this — sales of more A380s would be helpful in any case.

The Airbus A380 a birthday kid with wrinkles

An uncertain future

Airbus isn't the only one worried about mega planes. Its competitor Boeing only builds around six of its jumbo jets a year — and they are used for cargo. Yet the outgoing Airbus salesman John Leahy is nonetheless certain that passenger numbers will double. He sees the problem on the ground and not with the A380, complaining that airports need to be prepared. Maybe the A380 does have a future.