Here’s the almost complete flight schedule for direct flights from Belgium to Rhodes and Kos for summer 2018.
Almost complete because Corendon have not yet released the actual times of their flights, sensibly as a semi-charter airline they’re waiting until after the final ATC slot allocation conference at the beginning of February, so when they do publish the times they will be accurate. In the meantime we know the days of the week and dates they will be flying.
Where’s Thomas Cook Belgium? -they sold it to Brussels Airlines, which is why Brussels Airlines now appears on the schedule. We now have a slightly longer season for most flights, including TUI Belgium.