Compare / Railway vs Fly.io Machines
Railway vs Fly.io Machines
Pre-calculated from hand-checked data — Railway checked 2026-09-15, Fly.io checked 2026-09-15.
The short version
Railway 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 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.
Free tier Railway
Railway has a free tier; Fly.io Machines doesn't.
Features Railway
Railway comes out ahead on 5 of the 15 features we track, versus 2.
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 unless you pay for Managed Postgres. |
| Free tier | Free: $1 of monthly usage credits, capped at 1 vCPU / 0.5 GB per service, one replica, and 3-day log history. | None |
What you'd realistically pay
| Project stage | Railway | Fly.io Machines | Cheaper |
|---|---|---|---|
| Just starting | ≈$5/mo Hobby — The $5 minimum becomes usage credit; a small, mostly idle service usually fits inside it. | ≈$3/mo shared-cpu-1x, 256 MB — About $2.02/month in Amsterdam if always on; less with scale-to-zero. | Fly.io Machines |
| Steady traffic | ≈$10/mo Hobby + usage — Roughly a quarter vCPU and 512 MB always on; a small database adds a few dollars. | ≈$6/mo shared-cpu-1x, 1 GB — About $5.92/month in Amsterdam, plus egress at $0.02/GB. | Fly.io Machines |
| Growing | ≈$20/mo Pro — $20 minimum with higher resource limits and unlimited team seats. | ≈$12/mo Two 1 GB Machines — Two machines for availability; databases and egress on top. | Fly.io Machines |
Railway pricing notes
- Usage rates: about $20 per vCPU-month, $10 per GB of RAM-month, $0.15 per GB of volume storage, $0.05 per GB of egress — all metered per second.
- Postgres, MySQL, Redis, and other databases deploy as one-click services and bill through the same usage meters.
- The built-in CDN is free on every plan; cache hits skip origin compute and egress.
Fly.io Machines pricing notes
- Billed per second only while Machines are started; scale-to-zero is natively supported.
- Egress: $0.02/GB in North America and Europe; more elsewhere.
- Managed Postgres (MPG): Basic $38, Starter $72, Launch $282, Scale $962, Performance $1,922 per month, plus $0.28/GB-month storage. Every plan includes HA, backups, failover, and pooling.
Our ratings
Ease of use Railway
Pricing clarity
Free tier Railway
Scaling
Control Fly.io Machines
Feature by feature
Railway wins 5, Fly.io Machines wins 2, with 8 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 | Yes Built-in edge CDN on every plan at no extra fee; off by default, enabled per service, with Edge Rules and CLI controls. | 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. | Yes Managed Postgres (MPG) includes HA, backups, failover, and pooling from $38/month; unmanaged Fly Postgres is Unsupported. |
| 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.
- Config as Code (railway.toml / railway.json) is deprecated in favor of the IaC SDK (.railway/railway.ts). From 2026-08-28, new services in new projects no longer deploy via Config as Code; the old system is gone on 2026-12-01.
Fly.io
- New pay-as-you-go organizations get no free allowance.
- Managed Postgres starts at $38/month (Basic) plus $0.28/GB-month storage; unmanaged Fly Postgres is labeled Unsupported on the pricing page.
- Managed Postgres still lacks security patches and version upgrades, extra third-party extensions beyond pgvector and PostGIS, customer-facing alerting, and migration tools.
- 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.