Cheapest return flights from London to Keflavik in March from $192

AirHint found the following cheapest return flights from London (LHR) to Keflavik (KEF) in March 2026 (see full year).

Return flights

08 Mar - 11 Mar British Airways direct
31 Mar - 03 Apr Scandinavian Airlines
03 Mar - 06 Mar British Airways direct
03 Mar - 05 Mar British Airways direct
16 Mar - 20 Mar British Airways direct
01 Mar - 05 Mar British Airways direct
01 Mar - 06 Mar British Airways direct
08 Mar - 13 Mar British Airways direct
09 Mar - 13 Mar British Airways direct
03 Mar - 13 Mar British Airways direct
01 Mar - 13 Mar British Airways direct
27 Mar - 02 Apr Scandinavian Airlines
27 Mar - 01 Apr Scandinavian Airlines
27 Mar - 03 Apr Scandinavian Airlines
29 Mar - 03 Apr Scandinavian Airlines
30 Mar - 04 Apr Scandinavian Airlines
29 Mar - 02 Apr Scandinavian Airlines
31 Mar - 04 Apr Scandinavian Airlines
25 Mar - 04 Apr Icelandair direct
24 Mar - 05 Apr KLM

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

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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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