Can you self-host Apache Airflow for free?
Quick Answer: Yes. Apache Airflow is licensed under Apache 2.0 and can be self-hosted at no software cost. As of April 2026, the project is maintained by the Apache Software Foundation; users only pay for the underlying compute, database, and operational time.
Self-Hosting Apache Airflow Free
Apache Airflow is open source under Apache 2.0. There is no license fee for self-hosted use, regardless of organization size or DAG count.
What "Free" Actually Costs
While the software is free, production deployments incur infrastructure and operations costs:
- Compute — Scheduler, webserver, triggerer, and worker pods or VMs
- Metadata database — Postgres or MySQL (RDS, Cloud SQL, or self-managed)
- Storage — Logs (S3, GCS, or local), DAGs (Git or PVC)
- Operations time — Upgrades (annual major versions), security patching, monitoring
A small production install (single scheduler, 2 workers, RDS Postgres) typically runs $150–$400/month on a major cloud as of April 2026.
Managed Alternatives
Three managed Airflow services exist for teams that prefer not to operate it:
- Astronomer Astro — From around $100/month (Developer tier)
- AWS MWAA — From $0.50/hour for the small environment plus DB and S3
- Google Cloud Composer — Per-environment pricing starting around $300/month
When Self-Hosting Makes Sense
- Teams with strong Kubernetes operations practice
- Strict data residency or air-gapped environments
- High DAG counts where managed services hit pricing tiers
When Managed Makes Sense
- Small teams without dedicated DevOps
- Predictable pricing preferred over ops time
- Need first-class support contracts for compliance