Swiss International Air Lines (SWISS) is the national airline of Switzerland. It was formed in 2002 after the bankruptcy of Swissair and is now owned by the Lufthansa Group. SWISS operates flights to over 100 destinations worldwide, including major cities in Europe, North America, Asia, and Africa. The current logo for Swiss International Air Lines AG has a tailfin with the Swiss cross inside it, making it apparent that it is an airline from Switzerland.
The word SWISS is boldly written in red to the right of the Swiss tailfin. It appears to be in Univers 65 Bold typeface. The font is a commercial one and you can purchase and download the font here.