AirHint found the following cheapest return flights from Dublin (DUB) to Keflavik (KEF) in March 2026 (see full year).

Return flights

14 Mar - 18 Mar	Ryanair
14 Mar - 17 Mar	Ryanair
19 Mar - 21 Mar	Ryanair
13 Mar - 19 Mar	Ryanair
16 Mar - 19 Mar	Ryanair
03 Mar - 07 Mar	Ryanair
11 Mar - 18 Mar	Ryanair
24 Mar - 28 Mar	Ryanair
09 Mar - 12 Mar	Aer Lingus
02 Mar - 12 Mar	Ryanair
31 Mar - 04 Apr	Scandinavian Airlines
26 Mar - 02 Apr	Icelandair	direct
29 Mar - 01 Apr	Scandinavian Airlines
29 Mar - 05 Apr	Scandinavian Airlines
31 Mar - 09 Apr	Ryanair
29 Mar - 02 Apr	Icelandair	direct
27 Mar - 03 Apr	Ryanair
30 Mar - 02 Apr	Icelandair	direct
28 Mar - 05 Apr	Ryanair
29 Mar - 05 Apr	Icelandair	direct

Also check the deals for one-way flights from Dublin to Keflavik in March.

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 Dublin to Keflavik in March from 134€

Return flights