Cheapest return flights from London to Keflavik in March from $151

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

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

Return flights

01 Mar - 20 Mar British Airways direct
01 Mar - 04 Mar British Airways direct
11 Mar - 18 Mar British Airways direct
02 Mar - 06 Mar British Airways direct
01 Mar - 01 Mar British Airways direct
05 Mar - 08 Mar British Airways direct
09 Mar - 16 Mar British Airways direct
06 Mar - 09 Mar British Airways direct
04 Mar - 08 Mar British Airways direct
14 Mar - 21 Mar British Airways direct
31 Mar - 07 Apr Scandinavian Airlines
25 Mar - 07 Apr Icelandair direct
26 Mar - 07 Apr Icelandair direct
31 Mar - 07 Apr Icelandair direct
30 Mar - 06 Apr Scandinavian Airlines
31 Mar - 06 Apr Scandinavian Airlines
30 Mar - 05 Apr Icelandair direct
29 Mar - 05 Apr Icelandair direct
29 Mar - 04 Apr Icelandair direct
27 Mar - 02 Apr Scandinavian Airlines

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.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik