Fly.io vs Railway: The Best Modern Deployment Platform
Fly.io and Railway are the two most popular modern deployment platforms. Compare their DX, pricing, and tradeoffs.
Railway and Fly.io are the two platforms most often mentioned when Heroku isn't an option. Both have passionate communities. Both are genuinely good. The right choice depends on your priorities.
Mental Model
Railway: Opinionated, minimal-config, designed to feel like Heroku. You push code, Railway figures out the rest.
Fly.io: Less opinionated, more raw compute, multi-region-native. You have more control but more decisions to make.
DX Comparison
Railway wins on simplicity: The DX is genuinely delightful. One-click databases, clear pricing, good dashboard. Deploying feels effortless.
Fly.io wins on control: fly.toml is explicit, the CLI is powerful, and the fly volumes command gives you persistent storage that Railway lacks.
Pricing — The Honest Comparison
Railway's usage-based pricing is convenient but unpredictable. Fly.io's resource-based pricing is more complex to understand upfront but cheaper at scale for persistent workloads.
For a chatbot running 24/7:
- Railway: ~$20-50/month for a hobbyist plan
- Fly.io: ~$5-20/month for equivalent compute
Multi-Region
Fly.io wins clearly: Multi-region is native. You deploy to multiple regions in one command.
Railway: Single-region by default. Multi-region is a roadmap item but not production-ready.
When to Choose Railway
- Solo developers / small teams without DevOps knowledge
- Projects needing managed databases (Railway's Postgres/MySQL/Redis is genuinely convenient)
- Predictable, moderate workloads
When to Choose Fly.io
- Multi-region deployment is required
- Cost-sensitive at scale
- Need persistent volumes
- Team has some infrastructure knowledge