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How to tell when you’re too sick to fly

Nov. 22, 2020
5 min read
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Flu and cold seasons are officially upon us — complicating the worsening coronavirus pandemic.

In the past, you may have shrugged off mild symptoms like a sniffly nose or a tickle in your throat. But now, you can't board an airplane without certifying you don't have any symptoms of COVID-19, including a fever of 100.4 degrees or higher, shortness of breath or difficulty breathing, a cough and more.

Beyond what the airlines may specify, travelers should watch for a laundry list of symptoms specified by the U.S. Centers for Disease Control and Prevention (CDC), which can appear between two and 14 days after exposure to the virus that causes COVID-19:

  • Fever or chills
  • Cough
  • Shortness of breath or difficulty breathing
  • Fatigue
  • Muscle or body aches
  • Headache
  • New loss of taste or smell
  • Sore throat
  • Congestion or runny nose
  • Nausea or vomiting
  • Diarrhea

Travelers need to be extremely mindful about even the most innocuous ailments now, as they could be an indication of COVID-19. But, even in normal times — or if the coronavirus isn't detected by a COVID-19 test — it's important to prioritize your health and the health of others. Here's why you should never board a flight if you're feeling sick.

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You have a fever

A good rule of thumb is to never fly when you have a fever, according to New York-based internist Dr. Frank Contacessa.

In addition to indicating a possible COVID-19 infection, a fever could also present itself if you have the flu.

“Having a fever, in general, will accelerate fluid loss from your body," Dr. Contacessa told TPG in 2019. "The very low humidity of the cabin air will dehydrate you even faster. Dehydration makes you feel even worse, increasing weakness, headaches, lightheadedness, etc.”

You’re vomiting

(Photo by martin-dm/Getty Images)
(Photo by martin-dm/Getty Images)

Sure, there might be vomit bags in the seatback pocket. But if you're throwing up before you get to the airport, it's a clear indication you need to delay your travels.

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“If you have a fever over 100.4 degrees or are experiencing vomiting, there’s a really good chance that you’re contagious,” Dr. Nate Favini, medical lead at Forward (a membership-based preventive care clinic), told TPG in 2019.

Related: It's flu season — here's how to avoid getting sick on a plane

You're short of breath

“The pressurized cabin air has less oxygen, which can make you feel short of breath if your airways are already inflamed from an infection,” said Dr. Contacessa.

Dr. Favini added, “Flying is stressful on your body and your immune system in particular, so it can reduce your ability to fight off an infection. The air onboard is incredibly dry, and even healthy people end up extremely dehydrated at the end of their flight. You may end up being sicker or sick for longer because of flying while ill.”

You could still be contagious

Back in 2019, before the coronavirus was a known threat, Dr. Favini told TPG that travelers experiencing any flu-like symptoms — including fever, cough, runny nose, congestion, nausea, vomiting or diarrhea — are still contagious.

Even if it's not the coronavirus making you ill, you can still infect someone up to 6 feet away.

Related: How to boost your immune system so you don’t get sick while traveling

You have ear pain

Something as minor as ear pain might also be reason enough to avoid flying. You know how your ears sometimes pop during taking off or landing? Well, if you have ear pain and pressure, then that brief moment of discomfort can become severe.

“The changes in pressure during the flight can cause your eardrum to burst if you have an ear infection and it’s not properly treated before you take off,” said Dr. Favini.

Your heart is racing

(Photo by PeopleImages/Getty Images)
(Photo by PeopleImages/Getty Images)

Even if you don’t have the sniffles or more obvious symptoms of being sick, there is one tell-tale warning sign that you absolutely shouldn't fly. If you do, you could experience a serious medical emergency.

“If you’re experiencing chest pain or a racing heartbeat, especially if this is new or severe, don’t get on your flight,” said Dr. Favini. “This can be a sign of a life-threatening medical condition, and even if the pilot does land your flight, it might not be fast enough for you to get the help you need. The same goes for shortness of breath.”

Related: The best travel insurance policies and providers

When you can fly again

OK, let's say you’ve determined you’re too sick to fly. When can you reschedule your trip?

“If you do change your plans and postpone your trip, you should wait until you have been without a fever for at least 24 to 48 hours,” said Dr. Contacessa back in 2019.

And, of course, if you've been diagnosed with COVID-19, most airlines will ask you to delay travel for at least 14 days after testing positive. Some will require even a longer period of time since your diagnosis.

The CDC says you can be around others 10 days after symptoms first appear and 24 hours without a fever, and any other symptoms have improved.

Additional reporting by Melanie Lieberman.

Featured image by Getty Images

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Best premium travel card for value
TPG Editor‘s Rating
Card Rating is based on the opinion of TPG‘s editors and is not influenced by the card issuer.
4 / 5
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Rewards Rate

10xEarn 10x total points on hotels and car rentals when you purchase travel through Chase Ultimate Rewards®.
5xEarn 5x total points on flights through Chase Ultimate Rewards®.
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  • Intro Offer
    Earn 80,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $1,200 toward travel when you redeem through Chase Ultimate Rewards®

    80,000 bonus points
  • Annual Fee

    $550
  • Recommended Credit
    Credit ranges are a variation of FICO© Score 8, one of many types of credit scores lenders may use when considering your credit card application.

    740-850
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Why We Chose It

If you are looking to take your premium rewards to the highest level, this card is really a no brainer in our eyes. Chase's Ultimate Rewards make points easy to redeem, with a wide range of 10 airline and three hotel transfer partners and a friendly user interface. Despite the high annual fee, Chase is consistently adding new benefits to keep the card competitive in a fierce premium rewards field.

Pros

  • $300 annual travel credit as reimbursement for travel purchases charged to your card each account anniversary year
  • Access to Chase Ultimate Rewards hotel and airline travel partners
  • Unlimited 3x points on the broad category of travel and dining
  • 50% more value when you redeem your points for travel through Chase Ultimate Rewards®
  • Broad definitions for travel and dining bonus categories

Cons

  • Steep $550 annual fee
  • May not make sense for people that don't travel frequently
  • You must spend the $300 travel credit before earning 3x points for travel and dining
  • No automatic hotel elite status
  • Earn 80,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $1,200 toward travel when you redeem through Chase Ultimate Rewards®
  • $300 Annual Travel Credit as reimbursement for travel purchases charged to your card each account anniversary year.
  • Earn 5x total points on flights and 10x total points on hotels and car rentals when you purchase travel through Chase Ultimate Rewards® immediately after the first $300 is spent on travel purchases annually. Earn 3x points on other travel and dining & 1 point per $1 spent on all other purchases
  • Get 50% more value when you redeem your points for travel through Chase Ultimate Rewards®. For example, 80,000 points are worth $1,200 toward travel
  • 1:1 point transfer to leading airline and hotel loyalty programs
  • Access to 1,300+ airport lounges worldwide after an easy, one-time enrollment in Priority Pass™ Select and up to $100 application fee credit every four years for Global Entry, NEXUS, or TSA PreCheck®
  • Count on Trip Cancellation/Interruption Insurance, Auto Rental Collision Damage Waiver, Lost Luggage Insurance and more