Your city council has asked you how airlines make decisions about which airports to fly into—the best answer is

• A. Whether they can make money
• B. How many tourists visit
• C. The airport's weather conditions
• D. The size of the airport

Answer: (A)

The main factor airlines consider when deciding which airports to fly into is profitability. They evaluate how much revenue a route could generate (ticket, cargo, and potential ancillary income) against all costs (fuel, crew, maintenance, aircraft utilization, and airport fees). If the forecasted profits after covering these costs are positive, the route is likely to be operated; if not, it’s not pursued.

Tourist numbers can signal demand, but they don’t alone determine profitability—airlines look at overall demand, pricing, competition, and cost structure to estimate load factors and yields. Weather conditions matter for safety and reliability, but they don’t by themselves decide whether a route is profitable; routes are planned around the expectation of acceptable profitability rather than just weather. Airport size affects capacity and costs, yet profitability hinges on the balance of revenue and expenses, not merely how large the airport is.