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

Return flights

06 Apr - 11 Apr	easyJet
13 Apr - 18 Apr	easyJet
01 Apr - 10 Apr	easyJet
12 Apr - 17 Apr	easyJet
12 Apr - 18 Apr	easyJet
05 Apr - 10 Apr	easyJet
12 Apr - 24 Apr	easyJet
19 Apr - 24 Apr	easyJet
19 Apr - 29 Apr	easyJet
16 Apr - 22 Apr	easyJet
27 Apr - 03 May	easyJet
24 Apr - 02 May	easyJet
26 Apr - 03 May	easyJet
30 Apr - 03 May	easyJet

Also check the deals for one-way flights from Southend to Keflavik in April.

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 April from 223€

Return flights