AirHint found the following cheapest return flights from Klagenfurt (KLU) to Brussels (BRU) in March 2026 (see full year).
Return flights
| 18 Mar - 21 Mar | Austrian Airlines | ||
| 19 Mar - 21 Mar | Austrian Airlines | ||
| 19 Mar - 20 Mar | Austrian Airlines | ||
| 18 Mar - 20 Mar | Austrian Airlines | ||
| 20 Mar - 20 Mar | Austrian Airlines |
Also check the deals for one-way flights from Klagenfurt to Brussels in March.
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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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