Cheapest return flights from London to Keflavik in March from $425

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 March 2026 (see full year).

Return flights

09 Mar - 12 Mar British Airways
16 Mar - 19 Mar British Airways
06 Mar - 10 Mar British Airways
05 Mar - 08 Mar Aer Lingus
24 Mar - 08 Apr KLM
28 Mar - 06 Apr KLM
23 Mar - 01 Apr KLM
25 Mar - 29 Mar KLM
27 Mar - 31 Mar KLM
18 Mar - 22 Mar KLM
19 Mar - 22 Mar KLM

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

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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