Cheapest return flights from Mexico City to Keflavik in September from $944

Best time to book flights for Mexico City (MEX) to Keflavik (KEF) flights at AirHint

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

Return flights

06 Sep - 14 Sep Aeromexico
19 Sep - 26 Sep Arajet
23 Sep - 13 Oct Delta
27 Sep - 05 Oct Air Canada
10 Sep - 19 Sep Air Canada
15 Sep - 28 Sep Air Canada
04 Sep - 16 Sep Air Canada
08 Sep - 15 Sep Air Canada
14 Sep - 26 Sep Delta
12 Sep - 19 Sep Air Canada
02 Sep - 14 Sep Air Canada
08 Sep - 19 Sep Air Canada

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

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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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