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Cloud · head to head

Fly.io vs Next.js

Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Rated
-
Full reviewWebsite
Next.js logo

Next.js

Web Development

The React framework for the web

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Next.js has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fly.io egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are; Next.js opinionated architecture reduces flexibility compared to using React alone with separate libraries
  • They diverge on capability: Fly.io covers Global deployment, Next.js covers Server-side rendering.

Where they differ

Only the attributes on which Fly.io and Next.js actually diverge.

Attributes where Fly.io and Next.js differ
AttributeFly.ioNext.js
Starting price$29/monthFree
Pricing modelusage-basedUnknown
Free tierNoYes
PlatformsWeb, Api, DockerNode.js, Edge Runtime, Vercel, Web browsers
CategoryCloudWeb Development
Founded20202016

Identical on both: user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Fly.io

  • Global deployment
  • Docker support
  • Postgres databases
  • Redis support
  • Auto-scaling
  • Health checks
  • Backups
  • Monitoring

Only in Next.js

  • Server-side rendering
  • Static site generation
  • API routes
  • Automatic code splitting
  • Built-in CSS support
  • Image optimization
  • File-based routing
  • TypeScript support

What people use each for

The jobs each tool is most often brought in to do.

Fly.io

  • Deploying containerised applications close to users across regionsnot Next.js
  • Running full stack apps and databases on managed machinesnot Next.js

Next.js

  • E-commerce websitesnot Fly.io
  • Static websitesnot Fly.io
  • Server-side rendered appsnot Fly.io
  • Jamstack applicationsnot Fly.io
  • Progressive web appsnot Fly.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Fly.io

  • Egress is priced by destination region, from $0.02 per GB in North America and Europe to $0.12 per GB for Africa and India, so the same traffic costs six times more depending on where users are
  • Stopped machines still bill at $0.15 per GB of root filesystem a month, so a paused service is not a free one
  • Volumes are billed on provisioned capacity rather than usage, at $0.15 per GB a month
  • Reservation discounts of 40% require paying a year up front, from $36 to $1,440
  • Fly Kubernetes is a separate $75 a month per cluster
  • Dedicated IPv4 addresses are $2 a month each

Next.js

  • Opinionated architecture reduces flexibility compared to using React alone with separate libraries
  • Required build and deployment infrastructure adds complexity for beginners
  • Server Components paradigm represents significant mental model shift from traditional client-side React
  • Async request handling in version 15 requires relearning APIs (params, cookies, headers now require await)
  • Lock-in to Vercel ecosystem for optimal performance, though other platforms are supported

Pricing, plan by plan

Fly.io

$29/month
  • Pay-as-You-Go$null/mo
    • Micro VMs and persistent storage charged by usage
    • FlyCTL CLI
    • Unlimited users and organizations
  • Serious Support$29/month
    • Access to dedicated engineering team
    • All Pay-as-You-Go features
  • Machine Reservation Blocks$null/mo
    • 40% discount on machine usage
    • Requires upfront payment for savings
  • Compliance Package$99/month
    • HIPAA compliance
    • BAAs
    • SOC2 documentation

Next.js

Free

No published plan breakdown. See the Next.js review.

Which should you pick?

Choose Fly.io if

  • You need global deployment.
  • You work on Web, Api, Docker.
  • You also want docker support.
Fly.io review

Choose Next.js if

  • You need server-side rendering.
  • You want to start without paying.
  • You work on Node.js, Edge Runtime, Vercel, Web browsers.
  • You also want static site generation.
Next.js review

Questions people ask

Is Fly.io or Next.js better?
Neither clearly leads. Fly.io starts at $29/month and Next.js at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fly.io or Next.js?
Next.js has a free tier; the other does not. Paid plans start at $29/month for Fly.io and Free for Next.js.
Does Fly.io or Next.js run on more platforms?
Fly.io runs on Web, Api, Docker. Next.js runs on Node.js, Edge Runtime, Vercel, Web browsers.
Can I use Next.js for free?
Yes. Next.js has a free tier, so you can try it without paying. Fly.io starts at $29/month.
What is Fly.io best used for?
Fly.io is most often used for deploying containerised applications close to users across regions, running full stack apps and databases on managed machines. Of those, deploying containerised applications close to users across regions and running full stack apps and databases on managed machines are not what Next.js is typically brought in for.
What can Fly.io do that Next.js cannot?
Fly.io covers Global deployment, Docker support, Postgres databases, Redis support. Next.js covers Server-side rendering, Static site generation, API routes, Automatic code splitting.

Answered from the vendors’ own pages

Fly.io: Is there a free tier for Fly.io?

Fly.io does not advertise a free tier. The base plan is pay-as-you-go with usage-based pricing for Micro VMs and persistent storage. All users get FlyCTL CLI, unlimited organizations, private networking, SSO, ACLs, and scoped tokens.

Source
Next.js: Is Next.js free?

Yes. Next.js is free, open-source software built on React and maintained by Vercel. The framework itself has no licensing costs. Hosting and deployment fees depend on your chosen platform.

Source
Fly.io: How much does Fly.io Serious Support cost?

Serious Support costs 29 USD per month and provides access to a dedicated engineering team while maintaining all pay-as-you-go features for Micro VMs and storage.

Source
Next.js: What are the key features of Next.js?

Next.js includes Server-Side Rendering (SSR), Static Site Generation (SSG), Incremental Static Regeneration (ISR), file-based routing, API routes, automatic code splitting, image optimization, and built-in performance optimizations that typically result in 90+ Lighthouse scores.

Source
Fly.io: What does Fly.io Compliance Package include?

The Compliance Package is 99 USD per month and includes HIPAA compliance, BAAs, and SOC2 documentation for organizations requiring compliance certifications.

Source
Next.js: Can I host Next.js applications for free?

Yes. Vercel offers a free Hobby tier for Next.js applications. Netlify and other platforms also provide free hosting tiers with generous bandwidth and build limits for testing and personal projects.

Source
Fly.io: Does Fly.io offer discounts for upfront commitment?

Yes, Fly.io offers Machine Reservation Blocks with 40% discount on machine usage. This requires upfront payment but applies savings on infrastructure costs.

Source
Next.js: Does Next.js require a build step?

Yes. Next.js requires a build step (next build) before deployment to production. This compiles your application and prepares it for optimal performance, though local development runs directly without this step.

Source
Next.js: What is React Server Components in Next.js?

React Server Components are a feature in Next.js that allow components to run on the server, reducing JavaScript sent to clients and improving security by keeping sensitive data server-side. They became stable in Next.js 15.

Source
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