Compare / Fly.io Machines vs Deno Deploy
Fly.io Machines vs Deno Deploy
Pre-calculated from hand-checked data — Fly.io checked 2026-08-01, Deno Deploy checked 2026-08-01.
The short version
Deno Deploy wins more of our comparison points, but Fly.io Machines still fits if dockerized apps that want low cost, fine control, or multi-region placement describes you.
Price Tie
Deno Deploy costs less while you're starting out, but Fly.io Machines works out cheaper once traffic grows.
Ease Deno Deploy
Deno Deploy is easier to get running: connect a GitHub repo or deploy with the deployctl CLI.
Control Fly.io Machines
Fly.io Machines gives you more control over the stack — the flip side of the convenience trade.
Free tier Deno Deploy
Deno Deploy has a free tier; Fly.io Machines doesn't.
Features Deno Deploy
Deno Deploy comes out ahead on 6 of the 15 features we track, versus 4.
What developers say about this matchup
We couldn't find a substantive first-person discussion comparing this exact pair. We leave the section empty instead of filling it with vendor marketing or generic SEO comparisons.
At a glance
| Fly.io Machines | Deno Deploy | |
|---|---|---|
| Best for | Dockerized apps that want low cost, fine control, or multi-region placement. | Apps written for the Deno runtime. |
| How deploys work | fly launch builds the image and deploys it; configuration lives in fly.toml and the flyctl CLI. | Connect a GitHub repo or deploy with the deployctl CLI. |
| The tradeoff | You operate more of the stack yourself — especially the database. | A runtime commitment: everything assumes Deno, not Node. |
| Free tier | None | Free: 1M requests, 20 GB egress, 15 CPU hours per month. |
What you'd realistically pay
| Project stage | Fly.io Machines | Deno Deploy | Cheaper |
|---|---|---|---|
| Just starting | ≈$3/mo shared-cpu-1x, 256 MB | Free Free | Deno Deploy |
| Steady traffic | ≈$6/mo shared-cpu-1x, 1 GB | ≈$20/mo Pro | Fly.io Machines |
| Growing | ≈$12/mo Two 1 GB Machines | ≈$20/mo Pro + usage | Fly.io Machines |
Our ratings
Ease of use Deno Deploy
Pricing clarity Deno Deploy
Free tier Deno Deploy
Scaling
Control Fly.io Machines
Feature by feature
Fly.io Machines wins 4, Deno Deploy wins 6, with 5 even.
Deploy workflow
| Fly.io Machines | Deno Deploy | |
|---|---|---|
| Deploy from Git push | Partial No native git integration; the documented path is flyctl in GitHub Actions. | Yes Connect a GitHub repo; pushes deploy automatically. |
| Preview deploys | Partial PR apps work via the official GitHub Action, not out of the box. | Yes Every branch and PR gets a preview deployment URL. |
| Official CLI | Yes flyctl does everything: launch, deploy, scale, ssh, logs. | Yes deployctl deploys from the terminal or CI. |
| Instant rollbacks | Partial Redeploy any previous image; no one-click dashboard rollback. | Yes Promote any previous deployment back to production. |
Platform
| Fly.io Machines | Deno Deploy | |
|---|---|---|
| Custom domains + HTTPS | Yes Custom domains with free managed certificates. | Yes Custom domains with automatic TLS on all plans. |
| Built-in CDN / edge network | Partial Anycast routing sends users to the nearest region, but there is no static-asset CDN. | Yes Apps run on a global edge network with cached static assets. |
| Serverless functions | No Machines are micro-VMs, not functions. | Yes The whole platform is isolate-based serverless. |
| Docker containers | Yes A Docker image is the deployment unit. | No No containers — code runs in Deno isolates. |
| SSH / shell access | Yes fly ssh console opens a shell in any running Machine. | No No servers to reach. |
| EU hosting region | Yes Amsterdam, Paris, Frankfurt, London, and more. | Partial Code runs at global edge locations; you cannot pin it to the EU. |
Runtime & operations
| Fly.io Machines | Deno Deploy | |
|---|---|---|
| Automatic scaling | Yes Machines autostart and autostop with traffic; scale counts per region. | Yes Scales per request automatically. |
| Scale to zero | Yes Stopped Machines cost only their storage. | Yes Idle apps cost nothing. |
| Scheduled jobs | Partial Scheduled Machines run on fixed intervals; full cron needs a workaround. | Yes Deno.cron schedules tasks natively. |
| Managed database | Partial Fly Postgres is automated-but-unmanaged; managed options come from partners like Supabase and Upstash. | Partial Deno KV is built in; Postgres means an external provider. |
| Logs & metrics built in | Yes Built-in metrics (Grafana), live logs, and log shipping. | Partial Logs and basic traces in the dashboard; deeper monitoring is external. |
Watch out for
Fly.io
- New pay-as-you-go organizations get no free allowance.
- Fly Postgres is explicitly unmanaged: automated but not a managed database service — backups and failover are your responsibility.
- Per-second compute plus $0.02/GB egress makes bills variable; prices differ by region.
Deno Deploy
- Deno runtime only — Node.js apps need porting.
- Free-tier apps pause when the monthly allowance is exhausted; there is no paid overage on Free.
Read the full reviews: Fly.io and Deno Deploy. Or answer four questions to see what fits your project.