Cheapest return flights from London to Keflavik in June from 400€

Best time to book flights for London (LCY) to Keflavik (KEF) flights at AirHint

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

Return flights

26 Jun - 30 Jun SWISS
18 Jun - 27 Jun SWISS
03 Jun - 09 Jun SWISS
04 Jun - 09 Jun SWISS
23 Jun - 29 Jun SWISS
27 Jun - 07 Jul Lufthansa
12 Jun - 27 Jun Lufthansa
16 Jun - 27 Jun Lufthansa
04 Jun - 11 Jun Air Dolomiti
25 Jun - 02 Jul British Airways
29 Jun - 08 Jul SWISS
23 Jun - 28 Jun SWISS
25 Jun - 30 Jun SWISS
24 Jun - 17 Jul Lufthansa
27 Jun - 03 Jul Lufthansa
26 Jun - 01 Jul KLM
18 Jun - 01 Jul SWISS
20 Jun - 05 Jul SWISS
28 Jun - 07 Jul KLM

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

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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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