Can you fly with dehydration?

Sometimes, dehydration leads to electrolyte imbalances that, in worse-case scenarios, can cause seizures. When it comes to travel, don't wait until feeling thirsty to drink water. By the time a person feels thirsty, they may already be dehydrated. Start hydrating well at least 24 hours in advance of a flight.



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“Creating a good hydration base prior to taking off is critical, especially for those longer flights or delays,” she says. “Getting ready for a trip can be taxing as you race to wrap up normal activities while packing and getting off to the airport.

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angina or chest pain at rest. an infectious disease (e.g. chickenpox, flu), including COVID-19. decompression sickness after diving (sometimes called 'the bends') increased pressure in the brain (due to bleeding, injury or infection)

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Use an electrolyte beverage for effective hydration These results suggest that an electrolyte beverage is more effective than mineral water for hydration under conditions such as when taking a flight.

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“While plain water is best for staying hydrated, other drinks and foods can help, too,” says Theunissen. “Fruit and vegetable juices, milk and herbal teas add to the amount of water you get each day.” Consider bringing your own herbal tea bags while flying.

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Preventing dehydration You should drink plenty of clear fluids such as water, diluted fruit juices or oral rehydration salt solutions such as Dioralyte®. These can be bought in pharmacies and supermarkets.

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Before you leave home, drink beverages that are high in electrolytes, typically those used by athletes. These include Gatorade, Powerade and Lucozade. Resource Water is another good example as it has water and electrolytes.

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The TSA website says you can pack supplements in either checked or carry-on luggage. Capsules, gelcaps (luckily, they're not considered liquids), and tablets usually have no issue with security and are allowed through security in carry-on luggage. The caveat is powdered products.

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'The problem arises due to spending long periods of time in a climate-controlled environment where the relative humidity can be as low as 10-15%, which is three times drier than the Sahara desert!' 'In an average 10 hour flight, men can lose approximately two litres of water and women around 1.6 litres.

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