There are several regional airlines around the world. Some of the notable ones include:
1. American Eagle: It is a subsidiary of American Airlines and operates regional flights in the United States, the Caribbean, Canada, and Mexico.
2. Delta Connection: This regional airline is operated by several regional airlines under contract with Delta Air Lines. It serves destinations within the United States, Canada, Mexico, and the Caribbean.
3. United Express: United Airlines operates this regional airline, which connects passengers to smaller cities in the United States and Canada.
4. SkyWest Airlines: It is one of the largest regional airlines in the United States and operates flights for various major airlines, including American, Delta, and United.
5. Jazz Aviation: Jazz Aviation is a regional airline based in Canada and serves as Air Canada Express, providing regional flights to numerous destinations in Canada and the United States.
6. Airlink: Airlink is a regional airline based in South Africa. It offers flights to various destinations within South Africa and neighboring countries.
7. Sichuan Airlines: Sichuan Airlines is a regional airline based in China and operates flights to domestic and international destinations within Asia.
These are just a few examples of regional airlines, and there are many more operating in different parts of the world, connecting smaller cities and serving as feeder airlines for larger carriers.