AirHint found the following cheapest return flights from Southend (SEN) to Keflavik (KEF) in August 2026 (see full year).

Return flights

17 Aug - 27 Aug	easyJet
19 Aug - 20 Aug	easyJet
24 Aug - 31 Aug	easyJet
28 Aug - 12 Sep	easyJet
17 Aug - 23 Aug	easyJet
30 Aug - 06 Sep	easyJet
14 Aug - 20 Aug	easyJet
12 Aug - 13 Aug	easyJet
19 Aug - 23 Aug	easyJet
20 Aug - 28 Aug	easyJet
12 Aug - 19 Aug	easyJet
28 Aug - 04 Sep	easyJet
10 Aug - 13 Aug	easyJet
26 Aug - 03 Sep	easyJet
28 Aug - 02 Sep	easyJet

Also check the deals for one-way flights from Southend 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 Southend to Keflavik in August from 373€

Return flights