How long does swollen feet last after flying?

It's also a typically harmless phenomenon. The fact is, you have just been sitting too long — and all the liquids (i.e. blood) in your body have sunk to your feet. The effect should only last for a short time, and dissipates shortly after you walk off the plane.



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Leg and foot swelling during air travel is common and typically harmless. The most likely culprit is inactivity during a flight. Sitting with your feet on the floor for a long period causes blood to pool in your leg veins. The position of your legs when you are seated also increases pressure in your leg veins.

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Travel: For some people, sitting for a long time in a car or airplane can cause fluid retention. The lack of circulation allows fluid to build up; however, the swelling usually goes away in a day or two.

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Post-flight recovery
  1. Elevate your feet. If you're uncomfortable, grab a seat at the arrival gate where you can elevate your feet. ...
  2. 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. ...
  3. Take a walk or exercise.


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The most likely culprit is inactivity during a flight. Sitting with your feet on the floor for a long period causes blood to pool in your leg veins. The position of your legs when you are seated also increases pressure in your leg veins.

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Just as water doesn't flow easily through a kinked-up garden hose, blood can't flow as well through a vein that has a kink. On top of that, changes in air pressure inside the airplane cabin cut down the amount of oxygen you breathe in. Low oxygen in your blood can also make blood clots more likely to form.

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DVT or PE may manifest during or shortly after the flight, but often not for several weeks. Prevention includes choosing aisle seating, maintaining hydration, walking frequently, wearing loose clothing, exercising the lower extremities, using a foot rest, and avoiding alcohol and sleeping pills.

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