Practical guide: Upgrade from Apache Airflow 2 to Airflow 3

Upgrading to a new version of Apache Airflow® can feel daunting, but it doesn’t have to be. This practical guide is designed for engineers, system administrators, and Airflow practitioners responsible for upgrading their company’s Airflow instances, whether running on Astro or open-source deployments. It walks you through every stage of the upgrade process, from understanding the new Airflow 3 architecture to using built-in upgrade tools like ruff rules and config lint, so you can plan, test, and deploy your upgrade with confidence.

You’ll discover:

• How Airflow 3’s architecture and security model differ from Airflow 2
• Upgrading checklists to follow to ensure no critical steps are missed
• Which breaking changes to watch for and how to fix them before they affect your Dags

After reading, you’ll learn how to have an efficient and smooth upgrading experience to unlock the performance, security, and usability enhancements in Airflow 3 for you and your team.

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