Cheapest return KLU–CGN flights, September

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

Return flights

11 Sep - 14 Sep Eurowings direct
25 Sep - 28 Sep Eurowings direct
04 Sep - 07 Sep Eurowings direct
18 Sep - 21 Sep Eurowings direct
12 Sep - 14 Sep Austrian Airlines

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

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