Fly.io vs Heroku (2026): Which is Better?

TLDR

Fly.io (7.7/10) and Heroku (6.9/10) are both Platform-as-a-Service tools, but they aim at different developers. Fly.io wins for teams that want to run apps in 30+ regions worldwide and pay per-second for what they use. Heroku wins for solo devs who just want a git push to deploy and never think about regions or machine sizes again.

Deployment Workflow

Heroku is the original push-to-deploy experience. You connect a git repo, run git push heroku main, and Heroku detects your stack with buildpacks and ships it. There is almost nothing to configure. That simplicity is why it pioneered the whole PaaS category, and it is still the fastest way to get a first deploy live for someone who has never touched infrastructure. The CLI is clean, GitHub integration is one click, and rollbacks are a single command.

Fly.io asks more of you. You install the flyctl CLI, run fly launch, and it generates a fly.toml config file. From there you make decisions about regions, machine sizes, and networking. It deploys Docker containers (or buildpacks via the CLI) as fast-booting Firecracker VMs called Machines. The learning curve is real, and the first deploy takes longer to reason about than Heroku’s. But once your fly.toml is set, deploys are quick and you have far more control over where and how your app runs. You also get a real shell into your Machines, which Heroku’s more locked-down dyno model never gave you cleanly.

Global Edge vs Single Region

This is the clearest split. Fly.io was built to put your app close to users. You can run the same app in 30+ regions, and Machines auto-stop when idle and wake on request, so you only pay for live regions. For a latency-sensitive API or a global audience, no other platform at this price makes multi-continent deployment this easy.

Heroku runs your dynos in a handful of regions (mainly US and EU) and does not do edge distribution. For a US-only SaaS that is fine. For a worldwide consumer app it means users far from your region eat the latency. If geography matters, Fly.io is the obvious pick.

Pricing

Neither has a free plan anymore. Heroku killed its free tier in 2022, and Fly.io removed free allowances for new accounts in 2024.

Fly.io is usage-based. A single shared-cpu-1x VM runs roughly $2 per month, and a small full-stack app with a volume lands around $3 per month. An early-stage app with two auto-scaling VMs sits in the $15-25 range. Standard Support is an extra $29 per month on top. The upside is you pay only for live compute. The downside is unpredictable bills for bursty workloads.

Heroku is fixed-tier and easier to forecast. Mini dynos are $5 per month but sleep after 30 minutes. Basic is $7 and always on. Standard 1X is $25 and Standard 2X is $50. Heroku Postgres starts free on the hobby tier. A basic three-tier production app realistically runs $50-100 per month. You pay more for predictability and convenience.

Databases and Add-ons

Both platforms manage your data layer, but the approaches differ. Heroku’s strength here is its add-on marketplace. One-click provisioning gives you managed Postgres, Redis, search, logging, and dozens of third-party services, all billed through Heroku. Heroku Postgres is mature and dependable, and for a team that does not want to think about databases, that one-click model is genuinely valuable.

Fly.io gives you managed Postgres and Redis (via Upstash) plus volumes for persistent storage, and you can run any database you like inside a Machine. It is more hands-on and the catalog is smaller, but you get more control over placement and sizing. If you want a turnkey ecosystem, Heroku wins; if you want to own your stack, Fly.io fits better.

Innovation and Momentum

Fly.io ships aggressively. New Machine types, GPU support for AI workloads, and managed Postgres and Redis have all landed recently, and the platform feels like it is still being actively reinvented. The team is public about what they are building, and the product changes month to month.

Heroku is the opposite story. Since the Salesforce acquisition, innovation has noticeably slowed. The platform is mature and stable, with a deep add-on marketplace, review apps, and pipelines that still work great. But it is coasting on a reputation it earned a decade ago rather than pushing forward. For some teams stability is exactly what they want, and there is real value in a platform that does not surprise you. For others it reads as stagnation, and that perception is exactly what opened the door for Fly.io, Render, and Railway.

When to Choose Fly.io

• You serve a global audience and need low latency across continents.
• You are comfortable with a CLI, a config file, and Docker.
• You want granular, usage-based pricing and can tolerate variable bills.
• You want a platform that is still actively improving.
• You need control over machine sizes, regions, and networking.

When to Choose Heroku

• You want the simplest possible git push to deploy with zero config.
• Your app is single-region and latency is not a concern.
• You value predictable fixed monthly costs over pay-per-use.
• You rely on the add-on marketplace, pipelines, or review apps.
• You are a solo dev or small team who would rather not touch infrastructure.

The Bottom Line

Fly.io takes this one. It does more, it costs less for small apps, and it is still being actively built. The trade-off is complexity: you have to learn flyctl and think about regions and machines. For most developers in 2026 starting something new, that effort pays off, and the global edge deployment is genuinely hard to get anywhere else at this price.

Heroku is not a bad tool. Its deployment simplicity is still best in class, and existing teams have little reason to migrate. But for a newcomer, the higher prices, single-region limits, and slowed innovation under Salesforce make it tough to recommend over Fly.io. Pick Heroku if you want to never think about infrastructure. Pick Fly.io if you want power and reach.