Cabin temperature on a plane
Short answer: A plane usually holds twenty two to twenty four degrees, but the air is very dry and moves constantly. Bring a layer you can put on.
Why you feel cold on a plane
The humidity in a cabin is under twenty percent, far drier than an ordinary living room. Dry air evaporates moisture from the skin constantly, and that cools. So twenty two degrees feels like eighteen.
What to wear
Long trousers, a long sleeved layer and a jumper you can put on and take off. Bamboo viscose does not feel cold against the skin when the cabin air moves. See bamboo long sleeved t-shirts for men.
The practical details
Socks rather than bare feet in shoes, and something round your neck if you plan to sleep. See bamboo socks for women and bamboo clothing for women.
Frequently asked questions
Why are you thirsty on a plane
Because the dry air draws moisture out of the body and skin throughout the flight.
Is it coldest by the window
Often yes, because the cabin wall is cold on the other side.
Does a blanket help
Yes, but a layer of clothing on the body works better than a loose blanket.