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

Return flights

16 Jun - 23 Jun	easyJet
16 Jun - 22 Jun	easyJet
03 Jun - 07 Jun	easyJet
15 Jun - 30 Jun	Ryanair
17 Jun - 24 Jun	easyJet
27 Jun - 04 Jul	Transavia France
04 Jun - 09 Jun	transavia
03 Jun - 11 Jun	Transavia France
09 Jun - 15 Jun	easyJet
04 Jun - 14 Jun	transavia
18 Jun - 25 Jun	Iberia
29 Jun - 05 Jul	Transavia France
25 Jun - 05 Jul	transavia
25 Jun - 05 Jul	Icelandair	direct

Also check the deals for one-way flights from Lisbon 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 Lisbon to Keflavik in June from 255€

Return flights