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1 in 5 Passengers Get Sick on Every Flight – Here Are 10 Tips to Stay Healthy on Your Next Flight

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1 in 5 Passengers Get Sick on Every Flight – Here Are 10 Tips to Stay Healthy on Your Next Flight

Alex Curtis1 in 5 Passengers Get Sick on Every Flight – Here Are 10 Tips to Stay Healthy on Your Next FlightMillion Mile Secrets Team

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More than 1 in 5 people who travel on planes will suffer from a cold or flu after the flight.  That means that on your next flight you can look to your neighbors on your left and right on your row and know that at least 1 of you will get sick from the flight you are about to take.

Sitting on an airplane is a perfect storm of conditions that put you at extremely high risk of getting sick.  And if you don’t plan ahead and take actions to minimize your risk, you most certainly will.  This is even more common right now, at the height of cold and flu season. 

A few weeks ago I returned from a flight to Italy.  I took a total of 6 flight segments for this trip (3 each way).  This meant that I was almost certain to get sick unless I took precautions to keep myself safe.

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A Recent Study by MattressFirm Found That Over 75% of the 2,800 People Surveyed Said They Would Still Fly on a Plane, Even if They Had a Cold or Flu
This Doesn’t Have to Be You This Winter Travel Season

How To Avoid Getting Sick on an Airplane

If you plan ahead for your next flight, you can keep your body safe if you understand what causes plane sickness and how to prevent getting sick on an airplane.

Why We Get Sick on Airplanes

Airplanes are the nearly perfect little environments for getting sick.  First of all, they are enclosed and contained spaces where people from all over the world stay for long periods of time.

A University of Alabama study found that some germs can stay up to 7 days on a plane.  That is a week of germs piling up on everything you touch and encounter on a plane.  So you can’t just avoid contact with people around you, because there is a week of history that your seat has seen, which could also get you sick.

If that weren’t enough, you can add in the factor of reduced oxygen and humidity from being at higher altitude.  Even with pressurized cabins (pressurized to 8,000 feet generally), oxygen reduction and low humidity cause dehydration in the body.  This, in turn, causes the drying up of the mucous membranes in our throat and nose that normally protect us from over 99% of the diseases we encounter in a normal day.

Airplanes are Common Places that Travelers End Up Catching the Cold or Flu. But Following These 10 Tips, Will Keep You Healthy on Your Next Flight.
Airplanes Are Common Places That Travelers End Up Catching the Cold or Flu.  But Following These 10 Tips Will Keep You Healthy on Your Next Flight

Basically, there are a lot of factors working against our immune system to put it into a weakened state.  Combine that, with the onslaught of germs and foreign bacteria that get thrown at it during a flight and it is no wonder that sickness after a flight is so common.

But there are ways to keep yourself healthy while flying.  By boosting our immune system and preventing our contact with germs.  Here are some tips to keep you from getting sick on your next flight.

Here Is How You Avoid Getting Sick

1.   Get Plenty of Rest Before Your Flight

As soon as you step on that plane, your body is about to encounter a lot of germs in an environment that it is not used to.  Since you know your immune system is about to endure a gauntlet of germs from all over the world, you need to make sure it is in its best condition.

Getting plenty of sleep before your flight is one of the best things you can do to make sure your immune system is performing at its best.  Try to get a solid 7 to 8 hours of sleep the night before your flight.  This way, if all else fails, your immune system can handle any germs that squeak into your body.

2.   Eat Well

I am guilty of not eating the healthiest food while traveling.  I’m generally a very healthy eater at home, but because healthy eating is so hard during long travel, I often just admit defeat and enjoy a few days of unhealthy food while I fly.

Unfortunately, this is the worst thing you can do for your body.  Like sleep, what you eat will have a huge impact on the strength of your immune system.

This tip is even more important for folks who generally are very healthy eaters.  Because a switch to greasy foods and sugar can have a much more dramatic impact on your immune system if it is used to healthy proteins and vegetables on a daily basis and then is immediately deprived of them without warning.

Airborne or Emergen-C are Powerful Vitamin Supplements Designed Specifically for Boosting Immune Systems. I Take Them 2-3 Days Before a Flight and 2-3 Days After to Keep My Immune System Strong.
Airborne or Emergen-C Are Powerful Vitamin Supplements Designed Specifically for Boosting Immune Systems.  I Take Them 2 to 3 Days Before a Flight and 2 to 3 Days After to Keep My Immune System Strong

Avoid salty foods as they can speed up dehydration, which is one of the biggest factors that cause us to get sick while flying (exacerbated by the low humidity mentioned earlier).

I also take Airborne (or Emergen-C) once a day, for 2 to 3 days leading up to my flight and a few days afterward.  These products provide a massive injection of vitamin C, among other vitamins, designed to give your immune system a boost.  The science on these supplements is often debated, but in my opinion, it definitely doesn’t hurt anything to take them.

3.   Buy Plane Food  (Yes Really)!

Ok, so you can’t just buy ANY plane food.  But many of the options offered on your flight are actually very good foods to prevent sickness while traveling.

Fresh fruits and vegetables will contain all the vitamins and nutrients your body needs, while also hydrating you.  Bread and crackers are also helpful in settling upset stomach and preventing motion sickness.

Here are some healthy food options that most airlines will offer for purchase during a flight:

  • Oatmeal:   Hydrating and stomach soothing
  • Cheese and crackers plates:   Crackers are great, and they often come with grapes, apples, or carrots to hydrate and provide healthy vitamins.  This is my go-to meal on planes, most major airlines offer this
  • Ham & cheese sandwich:  Easy on the stomach and relatively well-balanced.  Avoid the potato chips if it comes with it, since salt can dehydrate you
  • Carrots and hummus:   We are seeing several airlines offer a small plate of carrots and hummus, or maybe celery.  All very healthy and nutritious
Delta In-Flight Menu
Check Out All the Very Healthy Options Available on All Delta Domestic Flights Right Now. Similar Options Are Available on Most Major Airlines

Most of these cost about $5 to $9, which is a small price to avoid getting sick if you need it.  Now you have an excuse to give your boss on why you charged the $8 cheese and cracker plate to the company credit card.  😉

4.   Use Sanitizing Wipes in the Restroom, Tray Table, Seat Belts, and Arm Rests

Remember that germs can last for up to 7 days on a flight.  This means when you sit down, the germs on your seat, armrest, tray table, seat belt, and seat pockets could have been infected as long as a week earlier.  With a domestic plane flying 8+ segments a day, that is 56 people who could have possibly left something unseen behind on the exact seat you are sitting in.

A package of these wipes costs only a few dollars at the drug or grocery store.  You can even find travel sizes very easily, to slip into a pocket in your purse or backpack.

Remember to wipe down:

  • Armrests:   Shared by everyone, but easy to clean if you have your wipes
  • Seat belts and seat buckles:   Everyone touches these at least twice per flight, often more
  • Seat pocket:  Wipe it down, but it is best not to even use this.  More on that later
  • Tray table:   Considered the most germ-infested part of the whole plane.  It has up to 8 times the germs and bacteria than the flush button in the airplane bathroom
  • Touchscreen entertainment center:   These are frequently handled and rarely cleaned.  They are the first thing most people handle after returning from the restroom (yes, even before the seatbelt surprisingly).  Give it a solid wipe down and/or avoid entirely

Also, if you ever have to go to the restroom, remember to bring your pack of wipes into the restroom to wipe down the seat, flusher, and sink.

5.   Bring Hand Sanitizer and Use It Often

A small bottle of hand sanitizer can be purchased at home for $1 to $2.  Make sure the bottle is 3.4 ounces or less so that you can bring it in your carry-on.

Wash your hands frequently throughout your flight, since there is no knowing when you have collected something on your hands.

This Bottle of Hand Sanitizer is Just 2.4oz, Making it Safe to Take Through Security. Costs Only $1.50 at Target
This Bottle of Hand Sanitizer Is Just 2.4 oz, Making It Safe to Take Through Security.  Costs Only $1.50 at Target

Wash your hands at least once after you get back from the bathroom on a plane.  And frequently when handling anything attached to the plane like the seat belt or tray table.

The CDC recommends hand sanitizer that contains at least 60% alcohol.  Check the back of the bottle under active ingredients to make sure yours qualifies.

6.   Stay Hydrated & Bring Your Own Bottle

One of the most important things you can do to stay healthy during a flight is staying hydrated.  This will allow your body’s natural fighting mechanisms to work properly and keep your mucous membranes in your throat and nasal passengers from drying out.

It is recommended to drink at least 8 ounces of water during every 1 hour of flight.  This is far more than you probably drink at home but is important because of the increased speed of dehydration during flight.

The easiest thing to do is to bring your own bottle.  Of course, you can buy a bottle of water from the Hudson News before your flight, but I highly recommend purchasing a nice reusable bottle and bringing it with you.

A Reusable Water Bottle is One of the Necessities I Take on Every Flight. This Bottle is Stainless Steel Inside, Keeping the Water Fresh. This 18oz Bottle Is Still Thin Enough to Carry in Backpack Water bottle Pockets (Unlike Clunky Nalgene Bottles).
A Reusable Water Bottle Is One of the Necessities I Take on Every Flight. This Bottle Is Stainless Steel Inside, Keeping the Water Fresh.  And at 18oz in Size It’s Still Thin Enough to Carry in Backpack Water Bottle Pockets (Unlike Clunky Nalgene Bottles)

Most airports now have water bottle filling stations to let you fill up your bottle for free.  Not only is this better for the environment, but you are more likely to drink more water if you don’t have to pay $3 a bottle for it.  Fill it up before your plane boards so you have a full bottle before takeoff.  Then you won’t need to bother a flight attendant during the flight for water.

On long international flights, I have also found the bottle useful in getting more water.  I usually take my bottle to the back of the plane, in the galley and ask if they can fill up my bottle.  This is far easier than getting a 3-ounce cup of water 100 times during a flight.

7.   Choose Your Seat Carefully

Not all seats are equal when it comes to staying healthy.  Window seats actually encounter significantly fewer germs than those in the aisles. 

It is also good to choose a seat away from the lavatories if possible.  Seats near the bathrooms tend to have lots of people passing and crowding around them.  The folks spending the most time in the bathroom might already be the sick ones on the plane, and so you are more likely to encounter their germs if they are standing next to you while waiting for a bathroom to open up.

A study published in Clinical Infectious Diseases analyzed a flight from Boston to Los Angeles that had to make an emergency landing due to a norovirus outbreak on the plane, which caused vomiting and diarrhea to many passengers on board shortly after takeoff.  The study found no link between using the bathroom and getting sick with norovirus, but did find that passengers in the aisle seats were the most likely to have contracted the norovirus, even if they never used the bathroom or left their seats.

Other studies concerning the patterns of airflow on a plane have confirmed similar findings.  Those sitting in the aisles will encounter several times as many germs as those sitting in the window seats.

8.   Avoid Touching Your Face

While most people think you get sick from germs entering your mouth, you are actually far more likely to get sick from germs entering your eyes and nose.

Avoid putting your hands on your face or rubbing your eyes.  If you must (such as people who have contacts), then just remember to use hand sanitizer right before you do it.

People traveling by air and sleeping on the plane
When Using a Sleep Mask, Remember to Be Careful About Where It Was Before You Put it On

If you use a sleep mask, make sure you are careful where you put it.  First of all, bring your own (don’t use an airline’s), and second of all keep it in your own carry-on bag when not in use.  Don’t set it down on the seat or tray table between use.  This is a common way that tray table germs are passed into the body.

9.   Skip the Adult Beverages

Drinking alcohol during a flight can further speed up the process of dehydration that has already started.  With the lower levels of oxygen in your brain, the effects of alcohol are greatly increased, and your liver will begin working harder to process the toxins in your system. 

All of this further takes strength away from your immune system, making you more likely to contract something.

I rarely drink at home.  But for some reason when I fly, I always find myself craving a beer or gin and tonic.  It might have something to do with me wanting to get the most from elite status perks (which often include free alcohol on flights), but either way, it is best to just pass on the alcohol.

Coffee is another drink that is best skipped over because it speeds up dehydration.  For a healthier option, try drinking tea instead.  Admittedly, most airline tea consists of Lipton black tea and maybe a no-name herbal variety.  You can always bring your own bag of tea and just ask for hot water on the flight.

10.   Bring Your Own Entertainment (And Don’t Even Think About Touching That Seat Pocket)

The seat pocket has been found to contain nearly the same amount of bacteria as the tray table (which is the worst area on the whole plane).  But the difference is that your sanitizing wipes have been found to be relatively ineffective at disinfecting the seat pocket fabric.

Flight attendants can attest that people use these pockets for everything from dirty tissues to used diapers (yes… really!)  Most people treat this pocket like a trash can.  For these reasons, health experts agree to simply never touch the seat pocket.


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Sì, è un pannolino sporco #passengershaming #mammerispettose #fcopax #cabincrewlife 😱😰✈️

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I know you want to buy the latest hot dog roller from Skymall, but simply forget that the in-flight magazines exist.  With hundreds of pages and tons of surface area to touch, there is no saying how many germs exist on these magazines.  They are never cleaned, except when they are replaced once per quarter.  Imagine 90 days worth of strangers touching the magazine the next time you go to grab it, and you might think twice about how bad you need that Skymall gadget.

The touchscreen entertainment centers are also riddled with germs because they often get more human interaction than anything else on the plane.  Children love to rub their nose and then wipe their fingers around the screen.  Adults sneeze directly on these areas, which have cracks and crevices that can hold germs for days or weeks.

Try to just bring your own entertainment.  I rarely use the in-seat entertainment.  I bring my iPad for movies, my Nintendo Switch for playing games, and my Kindle for reading books.  I never get bored on airplanes, despite never touching those nasty entertainment devices.

Bottom Line

Airplanes are a perfect cocktail for getting sick.  They bring people from all over the world together into a small confined space with little air movement.  Dehydration and lower oxygen levels are 2 of the biggest reasons that our immune systems struggle to run optimally during a flight.

With an impaired immune system and a confined tube full of germs from all over the world, it is no wonder that 1 in 5 people on a flight will get sick.

You can stay healthy by following these 10 tips during your next flight:

  1. Get plenty of rest before your flight
  2. Eat well (take vitamin supplements to boost the immune system)
  3. Buy healthy airplane snacks
  4. Use sanitizing wipes on everything you touch
  5. Bring hand sanitizer and use it often
  6. Stay hydrated by bringing your own reusable water bottle
  7. Choose a middle seat (avoid the aisle)
  8. Avoid touching your face (and be careful with your sleep mask)
  9. Skip alcohol and coffee
  10. Bring your own entertainment

Follow these steps to stay healthy during this cold and flu season, or anytime you fly.

Do you have any other tips for staying healthy during flight?

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Editorial Note: We're the Million Mile Secrets team. And we're proud of our content, opinions and analysis, and of our reader's comments. These haven’t been reviewed, approved or endorsed by any of the airlines, hotels, or credit card issuers which we often write about. And that’s just how we like it! :)

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Choose a middle seat? Terrible advice for mental health!!

Agreed. I avoid middle seats as much as possible. But if I were really worried about getting sick, I’d probably opt for the window seat since apparently it has a lot less germs than an aisle seat.

One in five passengers on every flight get sick? Really? According to…?

However much we might be inclined to believe it at this time of eyar, this click-bait worthy title deserves an in text source or at least a footnote…. !!??

And just who is “Alex?” A doctor? A public health specialist? Sure, a few sources get vaguely mentioned, but no links, no footnotes…. Much seems reasonable, but come on mms, clean up your act….

I enjoyed the article and typically follow these rules. I don’t care about the odd looks I get from passengers (and flight attendants!) when I sanitize my seating area. Not to detract from the fun comments about the Skymall catalog, they went bankrupt and ceased publishing in 2015 and re-emerged entirely online.

A couple points I’d add: Meditate on the flight to stay deeply rested and resilient (TM works best); rest is the antidote to stress. And stretch, as much as can be done in the confines of sardine seating. I usually reach up to the cabin ceiling when waiting for the lav, and some twists and turns in my seat to maintain some flexibility and improve circulation.

Hi Thomas!

Thanks for sharing your tips. I’ve seen quite a few people with face masks and many more like you who sanitize their seat and tray areas. I’ve actually always thought they were geniuses!

I don’t do it myself partially out of sheer laziness, so I guess I like to live dangerously!

Some very good suggestions here. I fly all the time, mostly in SE Asia and used to get frequent upper respiratory infections after flying. A couple of years ago I bought this cool thing online called a HumidiFlyer ( which I now wear often on flights. I have not been sick once from a flight since then. I have no connection to the company, but it really works and keeps your throat and lungs from drying out.

I’m glad you were able to find something that worked for you Philip. Thank you for sharing!

I use an antibiotic ointment in my nostrils a couple of times during a flight. It seems to keep me from getting sick from breathing in germs!

Interesting suggestion! I’ve never thought about this, but it certainly seems to make for an excellent choice to prevent getting sick. I may have to consider this for my next flight