Cheapest return flights from London to Keflavik in July from $439

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 July 2025 (see full year).

Return flights

02 Jul - 08 Jul SWISS
09 Jul - 17 Jul SWISS
04 Jul - 09 Jul KLM
02 Jul - 06 Jul KLM
04 Jul - 18 Jul KLM
31 Jul - 07 Aug SWISS
25 Jul - 29 Jul British Airways
31 Jul - 08 Aug SWISS
16 Jul - 31 Jul KLM
04 Jul - 08 Jul Lufthansa
30 Jul - 05 Aug SWISS
11 Jul - 16 Jul KLM
05 Jul - 14 Jul KLM
25 Jul - 07 Aug KLM
25 Jul - 03 Aug KLM
26 Jul - 07 Aug KLM
25 Jul - 14 Aug KLM
25 Jul - 01 Aug KLM
30 Jul - 03 Aug SWISS
19 Jul - 01 Aug KLM

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

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.

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