Cheapest return flights from London to Keflavik in June from $285

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

18 Jun - 26 Jun SWISS
19 Jun - 26 Jun SWISS
04 Jun - 10 Jun SWISS
09 Jun - 16 Jun SWISS
30 Jun - 10 Jul SWISS
04 Jun - 12 Jun SWISS
09 Jun - 19 Jun SWISS
26 Jun - 30 Jun SWISS
02 Jun - 05 Jun SWISS
23 Jun - 26 Jun SWISS
25 Jun - 30 Jun SWISS
27 Jun - 02 Jul KLM
28 Jun - 02 Jul KLM
27 Jun - 04 Jul KLM
29 Jun - 04 Jul KLM
30 Jun - 03 Jul SWISS
29 Jun - 16 Jul KLM
29 Jun - 10 Jul KLM
25 Jun - 01 Jul SWISS
27 Jun - 01 Jul SWISS

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

Skyscanner

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