The cheapest flight to Athens you can get by boooking 21 days before departure.
The most popular airlines on the route Brussels - Athens: Ryanair (FR), Aegean (A3), Pegasus (PC).
The cheapest flights you can book on the route Charleroi (CRL) - Eleftherios Venizelos (ATH).
Direct flights last about 3h 5min.
Direct flights available 7 days a week.
Direct flights: Ryanair (FR), Aegean (A3), TUI fly Belgium (TB).