AirHint found the following cheapest return flights from London (STN) to Keflavik (KEF) in June 2026 (see full year).

Return flights

12 Jun - 24 Jun	easyJet
03 Jun - 09 Jun	Ryanair
02 Jun - 04 Jun	easyJet
02 Jun - 16 Jun	easyJet
03 Jun - 10 Jun	Ryanair
26 Jun - 04 Jul	easyJet
04 Jun - 10 Jun	Ryanair
20 Jun - 04 Jul	Ryanair
06 Jun - 10 Jun	Ryanair
20 Jun - 22 Jun	Ryanair
27 Jun - 04 Jul	Ryanair
17 Jun - 24 Jun	Ryanair
23 Jun - 30 Jun	Ryanair
17 Jun - 29 Jul	Ryanair
25 Jun - 03 Jul	Ryanair
25 Jun - 01 Jul	Ryanair
29 Jun - 15 Jul	easyJet
28 Jun - 05 Jul	Ryanair
26 Jun - 05 Jul	easyJet
27 Jun - 10 Jul	Ryanair

Also check the deals for one-way flights from London to Keflavik in June.

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 London to Keflavik in June from $240

Return flights