📅Today's Fact•Thursday 14th May 2026
On a 10-hour flight, passengers can lose around 2 litres (0.5 gallons) of fluid, thanks largely to dry cabin air.
On a 10-hour flight, you can lose about 2 litres of fluid, mostly because the air in the plane's cabin is incredibly dry, even drier than the Sahara Desert. It's surprising because we don't feel ourselves losing this water, but it's actually a significant amount that can leave you feeling tired afte