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

Return flights

04 Mar - 10 Mar	easyJet
04 Mar - 11 Mar	easyJet
11 Mar - 24 Mar	easyJet
02 Mar - 09 Mar	easyJet
11 Mar - 18 Mar	easyJet
02 Mar - 12 Mar	easyJet
06 Mar - 12 Mar	easyJet
06 Mar - 13 Mar	easyJet
03 Mar - 11 Mar	easyJet
09 Mar - 13 Mar	easyJet
30 Mar - 10 Apr	Fly Play	direct
28 Mar - 08 Apr	Transavia France
31 Mar - 08 Apr	easyJet
30 Mar - 06 Apr	Fly Play	direct
28 Mar - 09 Apr	Transavia France
28 Mar - 07 Apr	Transavia France
23 Mar - 04 Apr	easyJet
24 Mar - 04 Apr	Iberia Express
27 Mar - 02 Apr	Iberia
25 Mar - 04 Apr	easyJet

Also check the deals for one-way flights from Madrid 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 Madrid to Keflavik in March from 159€

Return flights