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

Return flights

31 Aug - 06 Sep	easyJet
03 Aug - 06 Aug	easyJet
24 Aug - 31 Aug	easyJet
16 Aug - 27 Aug	easyJet
24 Aug - 26 Aug	easyJet
20 Aug - 27 Aug	easyJet
13 Aug - 20 Aug	easyJet
24 Aug - 30 Aug	easyJet
30 Aug - 06 Sep	easyJet
30 Aug - 03 Sep	easyJet
30 Aug - 09 Sep	easyJet
17 Aug - 22 Aug	easyJet
05 Aug - 10 Aug	easyJet
19 Aug - 24 Aug	easyJet
31 Aug - 09 Sep	easyJet
28 Aug - 03 Sep	easyJet
27 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 $485

Return flights