Airline (noun)

1. A company that operates a regular service of airliners.
2. A route served by an airline.

Origin:

Early 20th century: blend of air and line.

Examples:

1. The airline announced a new route.
2. The airline offers a frequent flyer program.
3. I have to book my flight with that airline.
4. The airline experienced financial difficulties.
5. He works for a major international airline.