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

Return flights

05 Mar - 12 Mar	easyJet	direct
03 Mar - 06 Mar	easyJet	direct
15 Mar - 24 Mar	easyJet	direct
07 Mar - 11 Mar	easyJet	direct
05 Mar - 10 Mar	easyJet	direct
05 Mar - 11 Mar	easyJet	direct
16 Mar - 21 Mar	easyJet	direct
10 Mar - 17 Mar	easyJet	direct
08 Mar - 17 Mar	easyJet	direct
15 Mar - 22 Mar	easyJet	direct
25 Mar - 12 Apr	easyJet
27 Mar - 06 Apr	easyJet	direct
30 Mar - 03 Apr	Icelandair	direct
25 Mar - 12 Apr	Icelandair	direct

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

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

Cheapest return flights from London to Keflavik in March from $113

Return flights