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

One-Way flights

09 Jul	Fly Play	direct
16 Jul	Fly Play	direct
10 Jul	Fly Play	direct
06 Jul	Fly Play	direct
22 Jul	Fly Play	direct
23 Jul	Fly Play	direct
08 Jul	Fly Play	direct
27 Jul	Fly Play	direct
31 Jul	Fly Play	direct
07 Jul	Ryanair

Also check the deals for return flights from Dublin to Keflavik 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 one-way flights from Dublin to Keflavik in July from $112

One-Way flights