Quick question, i am planning a little trip from paris to belgium next month and i really dont want to fly, i checked some train sites but the prices look crazy so i was wondering what is the cheapest way to get there?
What is the cheapest way to get from Paris to Belgium
Accepted answer
Cheapest is usually Flixbus or BlaBlaCar. Depends on what you value... Eurostar direct high-speed trains are way faster but usually cost more than low-cost alternatives. In my experience, Flixbus and BlaBlaCar are the cheapest options for this route. You can even find OUIGO train tickets starting from €10.00 if you book far enough in advance.

Replies
technically walking or cycling is the absolute cheapest method. it is not very practical for most travelers though
found out that tickets from CDG to Brussels Midi are generally valid on any train from Midi to Central - so the connection is free
Avoid staying near Brussels Midi station because it is an unattractive and unsafe area at night.