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

Return flights

24 Jul - 29 Jul	Fly Play	direct
27 Jul - 30 Jul	Fly Play	direct
23 Jul - 05 Aug	Fly Play
26 Jul - 30 Jul	easyJet
21 Jul - 24 Jul	Lufthansa
23 Jul - 05 Aug	Fly Play	direct
24 Jul - 27 Jul	Fly Play
30 Jul - 03 Aug	Icelandair	direct
31 Jul - 04 Aug	SWISS
21 Jul - 23 Jul	Eurowings
25 Jul - 01 Aug	Transavia France
21 Jul - 23 Jul	Icelandair	direct
21 Jul - 24 Jul	Icelandair	direct
26 Jul - 30 Jul	Icelandair	direct
25 Jul - 01 Aug	Icelandair	direct

Also check the deals for one-way flights from Keflavik 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 Keflavik to Dublin in July from 203€

Return flights