AirHint found the following cheapest return flights from Mexico City (MEX) to Keflavik (KEF) in August 2025 (see full year).

Return flights

22 Aug - 31 Aug	Volaris
21 Aug - 24 Aug	Volaris
14 Aug - 24 Aug	Volaris
17 Aug - 24 Aug	Volaris
12 Aug - 21 Aug	Aeromexico
21 Aug - 11 Sep	Volaris
05 Aug - 20 Aug	Volaris
19 Aug - 31 Aug	Air Canada
02 Aug - 08 Aug	Volaris
02 Aug - 06 Aug	Volaris

Also check the deals for one-way flights from Mexico City to Keflavik in August.

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 Mexico City to Keflavik in August from 662€

Return flights