Dokku vs Fly.io: Which is Better in 2026?
Choosing between Dokku and Fly.io comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Dokku
Heroku-like PaaS for self-hosted deployments
Best for you if:
- • Dokku is a lightweight PaaS that lets you deploy apps with git push on your own servers
- • It provides Heroku-like deployments using Docker containers on any Linux server
Fly.io
Deploy apps close to users on edge infrastructure
Best for you if:
- • Fly.io is a platform for deploying applications globally on servers close to users
- • It runs Docker containers, databases, and full-stack apps on edge infrastructure
| At a Glance |  Dokku |  Fly.io |
|---|---|---|
Starts at | Free tier + paid plansFree tier available | $1.94/monthPay as you go |
Best For | Hosting & Deployment | Hosting & Deployment |
Rating | - | - |
Choose Dokku or Fly.io?
Choose Dokku if
Heroku-like PaaS for self-hosted deployments
- Free Heroku alternative
- Simple deployment
- Git push deploy
Choose Fly.io if
Deploy apps close to users on edge infrastructure
- Run apps close to users globally
- Excellent for containerized apps
- Free allowance included
| Feature | Dokku | Fly.io |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | ★4.2/5 55 reviews | No ratings yet |
| Categories | Hosting & DeploymentDevOps | Hosting & DeploymentCloud & Infrastructure |
In-Depth Analysis
Dokku
Heroku-like PaaS for self-hosted deployments
Strengths
- +Free Heroku alternative
- +Simple deployment
- +Git push deploy
- +Docker based
- +Active community
Weaknesses
- -Single server only
- -No HA built-in
- -Learning curve
- -Limited GUI
- -Self-managed
Key features
Fly.io
Deploy apps close to users on edge infrastructure
Strengths
- +Run apps close to users globally
- +Excellent for containerized apps
- +Free allowance included
- +Good CLI experience
- +Sqlite and Postgres hosting
Weaknesses
- -Learning curve for full features
- -Pricing model complex
- -Support can be slow
- -UI less polished
- -Debugging remote apps hard
Key features
Pricing: Dokku vs Fly.io
| Plan | Dokku | Fly.io |
|---|---|---|
| Tier 1 | Free Free | Free Free |
| Tier 2 | N/A | $1.94 month Pay as you go |
Pricing verified from each vendor's public pricing page. Compare in detail on Dokku pricing and Fly.io pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Dokku
Want the highest-rated option?
Neither has user reviews yet.
Go with: Dokku
Value user reviews?
Neither has user reviews yet.
Go with: Fly.io
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Both are hosting & deployment tools. Compare their specific features to decide.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
Fly.io
- Free tier available
- Our pick for this comparison
Dokku
- Choose if you want heroku-like PaaS for self-hosted deployments
The Bottom Line
Fly.io is our pick.
Frequently Asked Questions
Is Dokku or Fly.io better?
Fly.io is rated in our evaluation. Both are freemium.
What are Dokku and Fly.io used for?
Dokku: Heroku-like PaaS for self-hosted deployments. Fly.io: Deploy apps close to users on edge infrastructure.
What does Dokku cost vs Fly.io?
Dokku is freemium (free tier + paid plans). Fly.io is freemium (free tier + paid plans). Visit their websites for detailed pricing.