Ankl Polat made a list of WI-FI passwords of all airports in the world, with it you can save yourself a lot of problems. A really useful element today.
We leave you the map and you can generate changes in the following link, so you will be collaborating with more travelers who need it.
The link to edit it and collaborate with its growth is this:
This information is really a treasure for travelers, if you know of someone who can be useful do not forget to share it!