Overflight fees are charges that a country's Air Navigation Service Provider (ANSP) levies on an airline for flying through its airspace (sovereign territory), even without landing.

These fees cover the costs of air traffic control, navigation infrastructure, and safety services provided by that country.

The calculation is typically based on a formula involving the aircraft's **Maximum Take-Off Weight (MTOW)** and the **distance flown** within the airspace, multiplied by a country-specific unit rate.

Disclaimer: The costs calculated by this tool are estimates for informational purposes only and may not reflect the exact fees charged by ANSPs.