Softwr

Cloud · head to head

Fastly vs Fly.io

Fastly logo

Fastly

Cloud

High performance edge computing platform

From
Free
Rated
-
Full reviewWebsite
Fly.io logo

Fly.io

Cloud

Deploy web applications globally

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only Fastly has a free tier, so it costs nothing to try first.
  • Each has a real cost: Fastly bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe; 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
  • They diverge on capability: Fastly covers Edge Compute, Fly.io covers Global deployment.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Fastly and Fly.io actually diverge.

Attributes where Fastly and Fly.io differ
AttributeFastlyFly.io
Starting priceFree$29/month
Free tierYesNo
PlatformsWeb, ApiWeb, Api, Docker
Founded20112020

Identical on both: pricing model (usage-based), user rating (Not yet rated), category (Cloud).

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 Fastly

  • Edge Compute
  • CDN
  • DDoS Protection
  • Real-time Analytics
  • Image Optimization
  • Video Streaming
  • API
  • Instant Purge

Only in Fly.io

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

Both cover

  • GitHub
  • Cloud deployment
  • Web support
  • Api support

What people use each for

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

Fastly

  • Serving static and dynamic content through a global CDNnot Fly.io
  • Running edge logic and caching in front of an origin applicationnot Fly.io

Fly.io

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

Where each one falls short

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

Fastly

  • Bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe
  • The same traffic therefore costs more than twice as much depending on where the audience is, which is invisible until the bill arrives
  • The free allowance is 100 GB of bandwidth and 1M requests a month
  • Requests are billed separately from bandwidth, at $0.01 per 10,000 above the first million
  • High volume rates past 50 TB are not published and require contacting sales

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

Pricing, plan by plan

Fastly

Free
  • Free TrialFree
    • CDN
    • DDoS protection
    • Real-time analytics
  • Pay-As-You-GoFree
    • Usage-based pricing
    • Advanced features
    • Priority support

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

Which should you pick?

Choose Fastly if

  • You need edge compute.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want cdn.
Fastly review

Choose Fly.io if

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

Questions people ask

Is Fastly or Fly.io better?
Neither clearly leads. Fastly starts at Free and Fly.io at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fastly or Fly.io?
Fastly has a free tier; the other does not. Paid plans start at Free for Fastly and $29/month for Fly.io.
Does Fastly or Fly.io run on more platforms?
Fastly runs on Web, Api. Fly.io runs on Web, Api, Docker.
Can I use Fastly for free?
Yes. Fastly has a free tier, so you can try it without paying. Fly.io starts at $29/month.
What is Fastly best used for?
Fastly is most often used for serving static and dynamic content through a global cdn, running edge logic and caching in front of an origin application. Of those, serving static and dynamic content through a global cdn and running edge logic and caching in front of an origin application are not what Fly.io is typically brought in for.
What can Fastly do that Fly.io cannot?
Fastly covers Edge Compute, CDN, DDoS Protection, Real-time Analytics. Fly.io covers Global deployment, Docker support, Postgres databases, Redis support. Both handle GitHub, Cloud deployment, Web support, Api support.

Answered from the vendors’ own pages

Fastly: Does Fastly charge based on usage or a flat monthly fee?

Fastly operates on a usage-based model with volume discounts. They offer a free tier with 100 GB bandwidth and 1M requests for experimentation, then customers pay per unit consumed with tiered discounts as consumption increases.

Source
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
Fastly: What are Fastly's main service packages and their costs?

Fastly offers Network Services Packages ($1,500-$6,000/month baseline), Security Packages (custom pricing), Compute Packages ($500/month entry level), and Observability Packages ($1,500/month entry level). Enterprise solutions include custom quotes for high-volume deployments.

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
Fastly: Can I start using Fastly for free?

Yes, Fastly offers a free tier with generous allowances for experimentation including 100 GB bandwidth and 1M requests. You can start building free and only pay when you use additional resources.

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
Fastly: Are there surprise overage charges with Fastly?

Fastly advertises predictable pricing with no surprise overages. The pricing structure is designed to be transparent as consumption grows.

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
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