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

Return flights

10 Mar - 18 Mar	Aeromexico
04 Mar - 11 Mar	Aeromexico
17 Mar - 24 Mar	Spirit Airlines
24 Mar - 29 Mar	jetBlue
27 Mar - 06 Apr	jetBlue
28 Mar - 06 Apr	Flair Airlines
07 Mar - 14 Mar	Aeromexico
23 Mar - 28 Mar	Frontier Airlines

Also check the deals for one-way flights from Cancun 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.

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Cheapest return flights from Cancun to Keflavik in March from $770

Return flights