Is Fly.io free for hosting?

No — there's no free plan, but no monthly fee either: you pay for what you use (Pay As You Go: always-on app servers $12.7 per server, data transfer out $0.02 per GB).

How much does Fly.io cost for hosting?

No platform fee: Machines are billed by the second while running (a shared-cpu-1x with 2 GB is about $12.70 per 30 days in US East) plus $0.02/GB outbound in North America and Europe. At list prices: data transfer out 10 GB: $13/month (Pay As You Go); data transfer out 100 GB: $15/month (Pay As You Go); data transfer out 1k GB: $33/month (Pay As You Go).

Fly.io pricing

How Fly.io charges, what to know before you commit, and what you'd pay at your usage — next to what the alternatives would cost for the same thing.

How it charges

Checked 2026-10-03 on fly.io ↗ · USD, list prices

In short

No platform fee: Machines are billed by the second while running (a shared-cpu-1x with 2 GB is about $12.70 per 30 days in US East) plus $0.02/GB outbound in North America and Europe.

Free plan: Yes
Side project: $13/mo Pay As You Go
Growing: $15/mo Pay As You Go
Scaling: $33/mo Pay As You Go

What the model leaves out

Instance = shared-cpu-1x with 2 GB RAM, always on for 30 days in iad: $0.000000847/vCPU-second plus 1.75 GB of extra RAM at $0.000002316/GB-second ≈ $12.70 (from Fly's per-region price table formula; not a row in the summary table). A shared vCPU is not a dedicated core: the dedicated performance-1x with 2 GB is $33.00/month. Egress is the North America/Europe rate. Volumes ($0.15/GB-month), snapshots beyond 10 GB, dedicated IPv4 ($2/month), Managed Postgres and support plans are left out. Reservation blocks give 40% off compute when prepaid annually; not modelled. Organizations on plans discontinued in October 2024 keep their old allowances.

Before you commit

There's no free tier or monthly free allowance for new organizations, only a trial of 2 hours of Machine runtime or 7 days, whichever comes first.
Machine prices vary by region; the US East regions (iad/ewr) are cheapest and Frankfurt is about 15% more.
Stopped Machines still cost $0.15/GB-month for their root filesystem, and volumes are billed on provisioned size even when detached.
Outbound data costs $0.02/GB from North America and Europe but $0.04/GB from Asia Pacific, Oceania and South America and $0.12/GB from Africa and India.

Plan	Monthly fee	Data transfer out per month	Always-on app servers
Pay As You Go	None	$0.02 per GB	$12.7 per server

What you'd pay

Data transfer out per month100 GBAlways-on app servers1 server1 vCPU, 2 GB RAM each

Usage only some alternatives charge for

Requests per month5 million requestsServerless function compute100 GB-hoursDevelopers on the team1 seat

Pay As You Go1 server × $12.7 per server + 100 GB × $0.02 per GB$15/mo

The same usage elsewhere

VercelPro + Flat Rate CDN 10M$40+$25

NetlifyPro 3,000 credits$27+$12

CloudflareWorkers Paid$12saves $3.10

RailwayHobby$45+$30

RenderHobby$39+$25

Amazon Web ServicesPay as you go (Lambda + EC2 t4g.small)$17+$2.01

Hetzner CloudCPX12$13saves $1.24

Cost as you grow

Fly.io Hetzner Cloud Amazon Web Services Render Railway Cloudflare Netlify Vercelx: requests per month (million requests), other usage scaled with it; held at 1 server and 1 seat (always-on app servers, developers on the team) — add more for a bigger app with the sliders above · cheapest usable plan at each point, list prices

All hosting pricing, compared →Which one fits your situation →