AirHint found the following cheapest return flights from Madrid (MAD) to Keflavik (KEF) in June 2026 (see full year).

Return flights

09 Jun - 17 Jun	Wizz Air UK
08 Jun - 17 Jun	Iberia
09 Jun - 21 Jun	Wizz Air UK
20 Jun - 28 Jun	Wizz Air UK
13 Jun - 23 Jun	Iberia Express
20 Jun - 30 Jun	Wizz Air UK
20 Jun - 25 Jun	Wizz Air UK
02 Jun - 12 Jun	LOT
06 Jun - 15 Jun	LOT
11 Jun - 17 Jun	LOT
20 Jun - 02 Jul	Wizz Air UK
27 Jun - 05 Jul	Iberia
24 Jun - 04 Jul	Iberia
21 Jun - 01 Jul	Ryanair
20 Jun - 02 Jul	Iberia Express	direct
27 Jun - 05 Jul	Iberia Express	direct

Also check the deals for one-way flights from Madrid to Keflavik in June.

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 Madrid to Keflavik in June from $219

Return flights