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

Return flights

03 Jun - 10 Jun	easyJet	direct
01 Jun - 06 Jun	British Airways	direct
10 Jun - 20 Jun	British Airways	direct
10 Jun - 24 Jun	British Airways	direct
12 Jun - 20 Jun	British Airways	direct
15 Jun - 20 Jun	British Airways	direct
10 Jun - 17 Jun	British Airways	direct
13 Jun - 22 Jun	British Airways	direct
10 Jun - 18 Jun	easyJet
20 Jun - 28 Jun	Lufthansa

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from London to Keflavik in June from $108

Return flights