Which missile is considered the most economical air-to-air option?

• A. Sparrow
• B. Phoenix
• C. Sidewinder
• D. AMRAAM

Answer: (C)

Economy in air-to-air missiles comes from keeping the cost per engagement low while providing enough capability for typical combat needs. The Sidewinder fits this best because its design is simple and proven: it uses an infrared seeker, which keeps production and maintenance costs down compared to more complex guidance systems. It’s small, light, easy to integrate on a wide range of aircraft, and produced in large quantities, so the cost per unit and the cost to operate over time stay low.

By contrast, missiles built for long-range or peak performance involve more sophisticated hardware and testing. The Phoenix is a large, long-range missile with a powerful propulsion and guidance suite, which drives up both production and maintenance costs. AMRAAM uses an active radar seeker and more advanced electronics, making it more expensive per shot. Sparrow sits in between in capability and cost, but overall it doesn’t match the Sidewinder’s low cost for common, shorter-range engagements.