To book a complex trip (i.e. not a one-way trip, or a roundtrip from the same city, but a trip to several destinations such as Paris > Brussels > Amsterdam), all you need to do is go on Fairjungle.
Fill in the search form with the city of departure, then select the "Multi-destination" button on the right.
Then click on "OK" and fill in all the information about your trip in the new form.
Our agents will quickly get back to you with the best options!
If you want to travel by train or with a low-cost airline, you can book each segment of your itinerary separately, as a one-way ticket.