Symptoms of Dehydration After Flying

Symptoms of Dehydration After Flying

Air travel can be thrilling, but have you ever landed feeling sluggish and perhaps a bit off? If yes, then you might have experienced the symptoms of dehydration after flying. But why does this happen and how can you prevent it? Let's dive in.

Understanding Dehydration

Dehydration occurs when you lose more fluids than you take in, upsetting the balance of minerals in your body, known as electrolytes. These electrolytes are vital for carrying out various bodily functions.

Why Flying Causes Dehydration

Did you know that you could lose up to 1.5 litres of water during a three-hour flight? This is because the humidity levels in airplane cabins can drop to below 20%, which is even lower than the humidity in the desert! This dry air absorbs moisture from wherever it can, including your body, leading to dehydration.

Symptoms of Dehydration After Flying


One of the most common signs of dehydration is fatigue. You may feel tired and lack the energy for even light activities.

Dry Mouth and Thirst

A parched mouth and an unquenchable thirst are other common symptoms of dehydration.


Due to the lack of sufficient water in your body, your brain may temporarily contract, causing headaches.


Dehydration can lead to low blood pressure, which can make you feel dizzy or lightheaded.

Preventing Dehydration When Flying

Drink Plenty of Fluids

Drinking enough water before, during and after your flight is crucial. However, opt for water or electrolyte drinks over alcoholic or caffeinated beverages, as the latter can further dehydrate you.

Use an Electrolyte Supplement

Consider using an electrolyte supplement like Recuperol to quickly replenish lost fluids and electrolytes.

Eat Hydrating Foods

Eat foods high in water content, such as fruits and vegetables, to help keep your hydration levels up.


Experiencing symptoms of dehydration after flying is common but preventable. Remember to drink enough fluids, use electrolyte supplements if necessary and consume hydrating foods to help maintain your hydration levels. Safe travels!

Try our new calculator here to see how much recuperol you'll need on your next flight!


  1. Why do I feel dehydrated after flying? Airplane cabins have very low humidity levels which can cause your body to lose moisture, leading to dehydration.

  2. What are the symptoms of dehydration after flying? Symptoms can include fatigue, dry mouth and thirst, headaches and dizziness.

  3. How can I prevent dehydration when flying? Prevent dehydration by drinking plenty of fluids, using electrolyte supplements like Recuperol and eating hydrating foods.

  4. How much water do you lose when flying? You can lose up to 1.5 litres of water during a three-hour flight due to the low humidity levels in airplane cabins.

  5. Are electrolyte drinks like Recuperol beneficial during flights? Yes, Recuperol can help replenish lost fluids and electrolytes quickly, aiding in preventing dehydration.

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