What are city pairs in aviation?

• A. Groups of related airports in the same region
• B. Two cities - the departure city and the destination city
• C. Airport codes for domestic flights
• D. Schedules for local flights

Answer: (B)

City pairs in aviation refer specifically to the two cities involved in a flight route, consisting of the departure city and the destination city. This term is widely used in the airline industry when discussing routes, scheduling, and fare structures. Understanding city pairs is crucial for airlines to manage their networks, optimize operations, and cater to passenger demand. It highlights the connection between two points in air travel, which is fundamental to ticket pricing and route planning.

The other options do not accurately convey the meaning of city pairs. While groups of airports can exist within a region, that describes a broader concept. Airport codes relate to specific airports rather than cities as a whole, and flight schedules pertain to timetables rather than the specific connection between two cities. Thus, defining city pairs as two cities — the departure city and the destination city — provides clarity on the essential relationship being referenced in aviation discussions.