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

Return flights

30 Aug - 05 Sep	Ryanair
22 Aug - 24 Aug	Ryanair
28 Aug - 10 Sep	Ryanair
29 Aug - 01 Sep	easyJet
31 Aug - 06 Sep	Ryanair
23 Aug - 27 Aug	Ryanair
27 Aug - 03 Sep	Ryanair
20 Aug - 24 Aug	Ryanair
23 Aug - 28 Aug	Ryanair
23 Aug - 30 Aug	Ryanair
17 Aug - 20 Aug	Ryanair
21 Aug - 27 Aug	Ryanair
21 Aug - 26 Aug	Ryanair
24 Aug - 27 Aug	easyJet
25 Aug - 29 Aug	Aer Lingus
01 Aug - 04 Sep	easyJet

Also check the deals for one-way flights from Bristol 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 Bristol to Keflavik in August from 253€

Return flights