Fly.io
Run full apps in 35+ regions worldwide via Firecracker microVMs. Best for latency-sensitive global products. Pay per VM-second, free tier removed in 2024.
What is Fly.io?
Fly.io is engineering infrastructure — tooling that helps developers ship, host, monitor, or scale software.
Run full apps in 35+ regions worldwide via Firecracker microVMs. Best for latency-sensitive global products. Pay per VM-second, free tier removed in 2024.
What to look for in engineering
The questions you should ask before committing to Fly.io or any alternative.
- Time-to-deploy from zero
- Build performance and cold-start latency
- Pricing predictability — does it scale gracefully or spike on traffic?
- Vendor lock-in vs self-host options
- Status page reliability and incident track record
- SDK / framework quality
Fly.io cost at scale
Modelled monthly cost as you grow. Estimates only — final pricing varies on plan discounts, volume tiers, and any negotiated enterprise SKU. Team / traffic scale is the axis we vary.
Forex assumed at ₹85/USD. Actual cost includes 2–3.5% forex markup unless paying with a low-fx card.
Fly.io is great for
Web teams shipping production apps, especially Jamstack / serverless / modern-stack workloads.
Probably not ideal if
Heavily-regulated workloads requiring on-prem, or one-off static sites that a $5/mo host would handle.
Fly.io appears in 1 curated stack
Browse all stacksHand-picked tool bundles that include Fly.io. Each stack is opinionated about when this tool is the right pick, with monthly burn estimates and tradeoffs.
Alternatives to Fly.io
Other tools in the engineering category we cover.
Postman
API platform for designing, testing, documenting, and monitoring APIs. The default for backend teams.
Sentry
Application error monitoring + performance tracing. Catches exceptions in production with full stack traces.
Cloudflare
CDN, DDoS protection, DNS, edge workers, and zero-trust security. Free tier covers most small sites.
DigitalOcean
Predictable-pricing cloud compute. Droplets from $4/mo, App Platform for managed deploys, managed Postgres + Redis.
Jira
Enterprise issue tracking from Atlassian.
Vercel
Hosting platform optimized for Next.js with edge functions.
Fly.io head-to-head
See all Fly.io alternatives →Side-by-side comparisons with the obvious alternatives.
Track Fly.io in your stack
Add Fly.io to your free MatchYourSaaS tracker — we email you 30/7/1 days before every renewal, with the cheaper alternative ready to compare.
Add to trackerFAQ
›What does Fly.io cost?
Entry plan starts around $5 per user per month. Annual plans typically discount 15-20%. Fly.io bills in USD; Indian businesses incur ~3.5% forex markup unless paying with a forex-friendly card (see below).
›Who is Fly.io a good fit for?
Web teams shipping production apps, especially Jamstack / serverless / modern-stack workloads.
›Who should NOT use Fly.io?
Heavily-regulated workloads requiring on-prem, or one-off static sites that a $5/mo host would handle.
›Are there cheaper alternatives to Fly.io?
Yes — popular engineering alternatives include Postman, Sentry, Cloudflare. Compare them side-by-side via the head-to-head comparisons we maintain.
Pay for Fly.io with the right card
Picking Fly.io is half the decision. The other half is the card you swipe — at $5/mo the right pick recovers 1.5–4% in forex savings + rewards compared to a default retail card.
EXPRESS
Amex Hilton Honors
No-fx US card — pay USD with USD, zero markup; 3% rewards on engineering spend
IDFC FIRST Wow
0% forex markup vs 3.5% on retail Indian cards
ICICI MMT Signature
1.5% rewards on engineering spend