AirHint found the following cheapest return flights from Cologne (CGN) to Dublin (DUB) in July 2025 (see full year).

Return flights

30 Jul - 06 Aug	Ryanair	direct
30 Jul - 04 Aug	Ryanair
30 Jul - 20 Aug	Ryanair	direct
30 Jul - 08 Aug	Ryanair	direct
30 Jul - 03 Aug	Ryanair	direct
29 Jul - 03 Aug	Ryanair
31 Jul - 06 Aug	Ryanair
31 Jul - 03 Aug	Ryanair
30 Jul - 17 Aug	Ryanair	direct
27 Jul - 03 Aug	Eurowings
30 Jul - 30 Jul	Eurowings
29 Jul - 30 Jul	Eurowings
27 Jul - 31 Jul	Lufthansa
27 Jul - 29 Jul	Ryanair
29 Jul - 29 Jul	Eurowings

Also check the deals for one-way flights from Cologne to Dublin in July.

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 Dublin in July from 137€

Return flights