International Air Services Transit Agreement (IASTA)

The International Air Services Transit Agreement (IASTA) is a global treaty that allows commercial aircraft to pass through or over the airspace of member countries without needing special permission, provided they are not stopping for refueling or cargo. It facilitates international air travel by simplifying the navigation of multiple countries' airspace, promoting efficient and safe airline operations. The agreement encourages cooperation among nations to ensure overflight rights, helping airlines connect different regions smoothly and reliably while respecting each country's sovereignty and security requirements.