Cheapest one-way flights from London to Keflavik in August from $207

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

AirHint found the following cheapest one-way flights from London (LCY) to Keflavik (KEF) in August 2025 (see full year).

One-Way flights

22 Aug British Airways
21 Aug SWISS
28 Aug SWISS
27 Aug SWISS
14 Aug SWISS
17 Aug KLM
03 Aug KLM
23 Aug KLM
16 Aug KLM
09 Aug KLM

Also check the deals for return flights from London to Keflavik in August.

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