Compare / Railway vs Fly.io Machines
Railway vs Fly.io Machines
Pre-calculated from hand-checked data — Railway checked 2026-08-01, Fly.io checked 2026-08-01.
The short version
Railway and Fly.io Machines split our comparison — the right pick depends on what your project values.
Price Fly.io Machines
Fly.io Machines is cheaper at every stage we model — about $12/mo even for a growing project.
Ease Railway
Railway is easier to get running: connect a repo or image; Railway detects the build, deploys it, and adds databases with one click.
Control Fly.io Machines
Fly.io Machines gives you more control over the stack — the flip side of the convenience trade.
Features Railway
Railway comes out ahead on 5 of the 15 features we track, versus 3.
What developers say about this matchup
First-person discussions from the past three years that compare these products directly. Summaries are paraphrased; follow the source for the full context.
A production Rails operator compares measured latency after moving from Heroku to Railway and tests equivalent Render and DigitalOcean stacks.
Railway vs. Render, Heroku, Digital Ocean, Fly, etc — insane 150ms render queuing?A purpose-built calculator discussion compares actual compute value, shared CPU strength, price, and reliability across all four PaaS products.
Price comparison calculator for Fly.io, Heroku, Render, and RailwayA production team compares seven Heroku replacements hands-on after an outage, focusing on Git/Docker deploys, managed databases, previews, workers, observability, billing, and uptime.
Recent outage was the last straw — testing seven alternativesAt a glance
| Railway | Fly.io Machines | |
|---|---|---|
| Best for | Full-stack apps and APIs where you want the app and its database running in minutes. | Dockerized apps that want low cost, fine control, or multi-region placement. |
| How deploys work | Connect a repo or image; Railway detects the build, deploys it, and adds databases with one click. | fly launch builds the image and deploys it; configuration lives in fly.toml and the flyctl CLI. |
| The tradeoff | Pure usage billing means the bill moves with your traffic — predictable only while the app is small. | You operate more of the stack yourself — especially the database. |
| Free tier | None | None |
What you'd realistically pay
| Project stage | Railway | Fly.io Machines | Cheaper |
|---|---|---|---|
| Just starting | ≈$5/mo Hobby | ≈$3/mo shared-cpu-1x, 256 MB | Fly.io Machines |
| Steady traffic | ≈$10/mo Hobby + usage | ≈$6/mo shared-cpu-1x, 1 GB | Fly.io Machines |
| Growing | ≈$20/mo Pro | ≈$12/mo Two 1 GB Machines | Fly.io Machines |
Our ratings
Ease of use Railway
Pricing clarity
Free tier
Scaling
Control Fly.io Machines
Feature by feature
Railway wins 5, Fly.io Machines wins 3, with 7 even.
Deploy workflow
| Railway | Fly.io Machines | |
|---|---|---|
| Deploy from Git push | Yes Connect a GitHub repo; Railway detects the stack and deploys on push. | Partial No native git integration; the documented path is flyctl in GitHub Actions. |
| Preview deploys | Yes PR environments deploy a copy of every service in the project. | Partial PR apps work via the official GitHub Action, not out of the box. |
| Official CLI | Yes The railway CLI links local dev to project env vars and deploys. | Yes flyctl does everything: launch, deploy, scale, ssh, logs. |
| Instant rollbacks | Yes Redeploy any previous deployment from the dashboard. | Partial Redeploy any previous image; no one-click dashboard rollback. |
Platform
| Railway | Fly.io Machines | |
|---|---|---|
| Custom domains + HTTPS | Yes Custom domains with automatic TLS on all plans. | Yes Custom domains with free managed certificates. |
| Built-in CDN / edge network | No No CDN; every byte is served from your service region and billed as egress. | Partial Anycast routing sends users to the nearest region, but there is no static-asset CDN. |
| Serverless functions | No Everything is a long-running service, not functions. | No Machines are micro-VMs, not functions. |
| Docker containers | Yes Deploy from a Dockerfile or a public/private image. | Yes A Docker image is the deployment unit. |
| SSH / shell access | Partial railway ssh opens a shell inside the running container. | Yes fly ssh console opens a shell in any running Machine. |
| EU hosting region | Yes EU (Amsterdam) region available alongside US and Asia. | Yes Amsterdam, Paris, Frankfurt, London, and more. |
Runtime & operations
| Railway | Fly.io Machines | |
|---|---|---|
| Automatic scaling | Partial Vertical usage scales within plan limits; horizontal replicas exist but need Pro. | Yes Machines autostart and autostop with traffic; scale counts per region. |
| Scale to zero | Yes App sleeping stops compute billing after 10 idle minutes. | Yes Stopped Machines cost only their storage. |
| Scheduled jobs | Yes Any service can run on a cron schedule instead of continuously. | Partial Scheduled Machines run on fixed intervals; full cron needs a workaround. |
| Managed database | Yes One-click Postgres, MySQL, Redis, and Mongo billed through the same usage meters. | Partial Fly Postgres is automated-but-unmanaged; managed options come from partners like Supabase and Upstash. |
| Logs & metrics built in | Yes Logs, CPU/RAM metrics, and usage graphs built into the dashboard. | Yes Built-in metrics (Grafana), live logs, and log shipping. |
Watch out for
Railway
- Usage billing has no hard cap — a busy or misbehaving app can outgrow any estimate.
- Services can sleep after 10 idle minutes to save money, but outbound database connections or telemetry can keep them awake, and the first request after sleep is slow.
- The $5 Hobby plan is limited to a single developer.
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.
Read the full reviews: Railway and Fly.io. Or answer four questions to see what fits your project.