Flying can indeed affect your hearing and irritate your sinuses, particularly due to the changes in cabin pressure and the dry air in airplane cabins.
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You can fly with a sinus infection, but to avoid unnecessary pain and sinus pressure, it's best not to fly. The changes in air pressure while flying can cause your symptoms to worsen. When your sinuses are clogged, your body can't equalize the pressure difference, so you feel pain in your head.
Airplanes can be breeding grounds for bacteria and viruses, from cramped conditions to the low humidity that characterizes the air circulating on board. Low humidity can dry out your nasal passages and irritate your throat.
If you have nasal congestion, use a nasal spray about 30 minutes to an hour before takeoff and landing. Avoid overuse, however, because nasal sprays taken over three to four days can increase congestion. Use decongestant pills cautiously.
Airplane air, being so dry, works against the natural cleaning of the sinus mucous membranes. 3) Change in biometric pressure. Playing a role in introducing bacteria into the sinus cavities the cabin's change in barometric pressure is also a concern.
Some recent studies do in fact suggest that traveling, especially flying, can have a negative effect on your immune system, thus making it easier for you to get sick.
Airplane travel and sleep disturbances caused by air travel are frequently reported. Passengers who travel regularly are likely to change time zones and can experience circadian rhythm misalignment, leading to jet lag disorder (JLD). The incidence of jet lag increases with the number of time zones crossed.
Elevate your feet. If you're uncomfortable, grab a seat at the arrival gate where you can elevate your feet. ...
Soak your feet or take a bath when you arrive at your accommodations. Just as a hot tub or jacuzzi increases blood flow, a hot bath can have the same effect. ...
With a doctor's approval, adults can take a decongestant. “If it's a short flight, take it [the decongestant] before leaving,” House says. If it's a long flight, eight hours or so, you might take it an hour or so before the scheduled landing.