Heroku vs Fly.io

Side-by-side — pricing, strengths, tradeoffs, and fit.

Heroku

Cloud application platform

Fly.io

Run your app close to your users

At a glance

· Not enough data·From Contact sales
Free Tier
· Not enough data·From Freemium

Overview

One-liner

Cloud application platform

One-liner

Run your app close to your users

Maturity

Not enough data

Maturity

Not enough data

Open source

✕ No

Open source

✕ No

Pricing

Free tier

✕ None

Free tier

✓ Available

Starts at

Contact sales

Starts at

Freemium

Model

Flat rate

Model

Usage-based

Enterprise

✕ None

Enterprise

✕ None

Best for

✓ Best for

Teams with existing Heroku deployments, Salesforce ecosystem users, or developers who prefer the original PaaS experience

✓ Best for

Developers needing global deployment, low-latency APIs, or running full-stack apps with persistent storage near users

Not ideal for

✕ Not for

New projects — better alternatives (Railway, Render, Fly.io) now exist at lower cost with better DX

✕ Not for

Teams that don't need multi-region deployment or prefer simpler Git-push workflows

Strengths

↑ Strengths

Git-based deploys
10+ language buildpacks
Add-on marketplace
Heroku Postgres

↑ Strengths

30+ regions
Docker-based deploys
Anycast networking
Persistent volumes

Weaknesses

↓ Weaknesses

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↓ Weaknesses

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Full Heroku profile →Full Fly.io profile →