AirHint found the following cheapest return flights from Basel (BSL) to Keflavik (KEF) in June 2025 (see full year).

Return flights

21 Jun - 29 Jun	easyJet	direct
17 Jun - 22 Jun	easyJet	direct
17 Jun - 18 Jun	easyJet	direct
24 Jun - 29 Jun	easyJet	direct
24 Jun - 02 Jul	easyJet	direct
21 Jun - 26 Jun	easyJet
25 Jun - 02 Jul	Ryanair
27 Jun - 02 Jul	Austrian Airlines
27 Jun - 29 Jun	Austrian Airlines
21 Jun - 23 Jun	easyJet
22 Jun - 30 Jun	Lufthansa
20 Jun - 27 Jun	Austrian Airlines
24 Jun - 30 Jun	Lufthansa

Also check the deals for one-way flights from Basel 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 Basel to Keflavik in June from $198

Return flights