AirHint found the following cheapest return flights from Cologne (CGN) to Vienna (VIE) in May 2026 (see full year).

Return flights

25 May - 03 Jun	Eurowings	direct
31 May - 05 Jun	Eurowings	direct
05 May - 10 May	Eurowings
05 May - 10 May	Austrian Airlines	direct
21 May - 24 May	Eurowings
15 May - 17 May	Eurowings
09 May - 18 May	Eurowings	direct
21 May - 24 May	Eurowings	direct
13 May - 14 May	Eurowings	direct
15 May - 17 May	Eurowings	direct
13 May - 15 May	Austrian Airlines	direct
13 May - 16 May	Austrian Airlines

Also check the deals for one-way flights from Cologne to Vienna in May.

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 Cologne to Vienna in May from 97€

Return flights