AirHint found the following cheapest return flights from Klagenfurt (KLU) to Cologne (CGN) in March 2026 (see full year).

Return flights

02 Mar - 06 Mar	Ryanair
18 Mar - 20 Mar	Austrian Airlines
23 Mar - 30 Mar	Austrian Airlines
13 Mar - 15 Mar	Austrian Airlines
06 Mar - 09 Mar	Austrian Airlines
18 Mar - 22 Mar	Austrian Airlines
20 Mar - 22 Mar	Austrian Airlines
19 Mar - 22 Mar	Austrian Airlines
17 Mar - 22 Mar	Austrian Airlines
28 Mar - 01 Apr	Austrian Airlines
15 Mar - 20 Mar	Austrian Airlines

Also check the deals for one-way flights from Klagenfurt to Cologne in March.

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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Cheapest return flights from Klagenfurt to Cologne in March from 138€

Return flights