Helloooo, I’ve been lurking here a while, it appears that there are frequent threads about Webflow pricing and very few threads about how to host externally. The webflow export solution is pretty damn streamlined and works well with some solutions I’ve found. I’ll list a few!
Netlify - Very well established, features form handling and free SSL. You can literally host a lot of low traffic sites with custom domains for free and upgrading to a paid account will provide a larger traffic cap (100GB free, 1TB paid).
Bitballoon - As far as I know they were bought by Netlify. Very similar platform and it is priced per site rather than per account / bandwidth.
Getforge - My personal favorite, priced per account bandwidth caps and free SSL, an absolute treat to use. It seems that it was recently sold to a dev group named Beach.
There are other more complicated solutions such as Github pages, amazon web services and google cloud,
Hope this helps some users.