AirHint found the following cheapest return flights from Cologne (CGN) to Vienna (VIE) in August 2026 (see full year).
Return flights
| 20 Aug - 25 Aug | Ryanair | direct | |
| 01 Aug - 25 Aug | Eurowings | direct | |
| 20 Aug - 30 Aug | Ryanair | direct | |
| 20 Aug - 06 Sep | Ryanair | direct |
Also check the deals for one-way flights from Cologne to Vienna in August.
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