Korean Air is the flag carrier of South Korea. It is also considered as the largest airline in South Korea with its headquarters based in Seoul, South Korea. The international Korean flights as well as its cargo flights fly to 130 cities in 45 countries all over the world. The domestic Korean flights serve 20 local destinations. The international hub of Korean flights is at the Incheon International Airport. Korean Air is an original partner of the SkyTeam, the second largest alliance for airlines in the world.If you are travelling long distances by air on Korean Air flights, it helps to know a few health tips to make your flight more comfortable. The temperature inside the cabin of Koran Air flights is maintained at 22 to 24, which is a very comfortable temperature. It is still best to wear comfortable clothes that are not too thick but always have a light sweater or jacket in your carry-on luggage just in case it gets chilly.The humidity inside the cabin of Korean flights is kept at a level of 15 percent. The comfortable level of humidity for the average person is at 50 to 60 percent. The 15 percent level on Korean Air flights is already considered to be dry. In dry humidity the body moisture tends to evaporate. The skin as well as the membranes on your eyes and nose also begins to dry out through the course of the flight and it can get quite uncomfortable when that happens. The best thing to do during Korean flights is to keep yourself hydrated by drinking plenty of water, fruit juices or any kind of liquid beverages. Avoid drinking coffee and tea because these beverages can only cause further dehydration. Passengers with contact lens should remove them during Korean flights to avoid dryness of the eyes which could cause the eyes to get inflamed.The atmospheric pressure inside Korean flights is set at the altitude of 5,000-8,000 feet. There is the tendency that the deafening of the ears may occur. This is caused by the change in the pressure inside the Korean Air flights as they land or take off. To avoid the deafening of your ears chew some gum or just move your jaw up and down as if you are chewing gum. You can also try closing your mouth and then pinching your nose while you blow out some air slowly.