Does Fly.io Have Custom Domain?

By ToolVS Research Team · Last checked April 1, 2026

✅

YES

Yes, Fly.io supports custom domains with automatic SSL via Let's Encrypt.

What We Found

We checked this in April 2026 and here's what we found — Fly.io allows custom domains on all apps. SSL certificates are automatically provisioned and renewed via Let's Encrypt. You can configure domains via CLI or dashboard.

Things to Know

⚠️ DNS configuration must be done at your registrar
⚠️ Wildcard certificates require DNS validation

Try Fly.io Yourself

See if custom domain meets your needs. Most tools offer a free trial or free plan to get started.

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More About Fly.io

Does Fly.io have free plan?✅ YES Does Fly.io have api access?✅ YES

Frequently Asked Questions

Does Fly.io have custom domain on mobile?

Fly.io offers custom domain across platforms including mobile. However, the mobile experience may have some limitations compared to the desktop version. Check the mobile app for the latest capabilities.

Is custom domain available on Fly.io's free plan?

Custom Domain is available in Fly.io, though specific plan requirements may apply. Some features are limited to paid tiers. Check Fly.io's pricing page for the most current plan details.

What are the best alternatives to Fly.io for custom domain?

Fly.io already supports custom domain. You can explore our comparison pages to find tools that best match your requirements.

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About this check: We verify feature availability by reviewing official documentation, testing the product directly, and monitoring changelog updates. Information was last verified on April 1, 2026. Features and pricing may have changed since our last check.Our methodology →