AirHint found the following cheapest return flights from Reus (REU) to Keflavik (KEF) in August 2025 (see full year).

Return flights

06 Aug - 18 Aug	Jet2
13 Aug - 25 Aug	Jet2
07 Aug - 14 Aug	Ryanair
06 Aug - 11 Aug	Jet2
06 Aug - 24 Sep	Jet2
06 Aug - 14 Aug	Jet2
02 Aug - 09 Aug	easyJet
21 Aug - 01 Sep	Ryanair
12 Aug - 18 Aug	Ryanair
19 Aug - 28 Aug	Ryanair
21 Aug - 25 Aug	Ryanair
12 Aug - 14 Aug	Ryanair
11 Aug - 29 Sep	Ryanair
18 Aug - 01 Sep	Ryanair
21 Aug - 02 Sep	Ryanair
05 Aug - 23 Sep	Ryanair

Also check the deals for one-way flights from Reus to Keflavik in August.

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 Reus to Keflavik in August from 548€

Return flights