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Simplest way to deploy a Flask app

Pierre Bouillon
Developer, student, tech enthusiast and coffee junky. I would be glad to speak with you!
・1 min read

Hi !

I wrote a simple Flask app using flask and sqlalchemy which run pretty well on localhost but I would like to deploy it. The problem is that I don't have any clue on how to deploy it..

Could somebody explain me the simplest way to deploy my Flask app?

Thanks !

I'm on Windows

Discussion (10)

sjosyula3 profile image


Thanks much for posting this detailed guideline. By any chance are you planning to do an updated blog post ? I attempted to follow - your blog post to the very last detail, and could not get the Flask App deployed.

There were a couple of errors specific to apache - and after a LOT of research later, it was just a dead end for me.


pbouillon profile image
Pierre Bouillon Author • Edited

I don't think he'll receive a notification since it's not a reply to his comment, let me tag him ! @mitchjacksontech

mitchjacksontech profile image
Mitch Jackson

Sandeep, have you been able to solve the problem? If not and you're interested in revisiting, perhaps I can help with the apache errors. You can find my e-mail address on my profile

rhymes profile image

Flask's own documentation give you a few deployment options.

You can try Heroku's free plan:

hrothenb profile image
Howard Rothenburg

I am successfully using the simple Twisted Web server on Windows for Flask web sites.
Are others also successfully using Twisted on Windows, to validate that configuration?
if name == "main":
reactor_args = {}

def run_twisted_wsgi():
    from twisted.internet import reactor
    from twisted.web.server import Site
    from twisted.web.wsgi import WSGIResource

    resource = WSGIResource(reactor, reactor.getThreadPool(), app)
    site = Site(resource)
    reactor.listenTCP(5000, site)**reactor_args)

if app.debug:
    # Disable twisted signal handlers in development only.
    reactor_args['installSignalHandlers'] = 0
    # Turn on auto reload.
    import werkzeug.serving
    run_twisted_wsgi = werkzeug.serving.run_with_reloader(run_twisted_wsgi)

if name == "main":

mitchjacksontech profile image
Mitch Jackson

I had the same problem when I deployed my first Flask app. To approach the problem, I created a very simple small application, and worked through the kinks until I got it deployed in a way I was happy with. Only then did I move to deploying my full application.

I documented the process in this blog post. Perhaps it will be some help.

rrampage profile image
Raunak Ramakrishnan

You will need a WSGI server. Have a look at this tutorial. It shows you how to deploy a flask app using Nginx and uwsgi.

katharinakoal profile image
Katharina Koal

You might also take a look at Netlify. It's a well documented tool for deploying side projects quickly and even beyond:

hrothenb profile image
Howard Rothenburg

Here is an article about deploying flask with Waitress.

windson profile image

In case you want to deploy Flask app to azure, you can follow along with the tutorial here