Cheapest return flights from Mexico City to Keflavik in September from $999

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

18 Sep - 28 Sep Volaris
13 Sep - 23 Sep Viva Aerobus
28 Sep - 03 Oct Aeromexico
21 Sep - 30 Sep Air Canada
15 Sep - 25 Sep Air Canada
25 Sep - 09 Oct Delta
23 Sep - 01 Oct Delta
24 Sep - 08 Oct KLM
13 Sep - 22 Sep KLM
24 Sep - 30 Sep Lufthansa
02 Sep - 17 Sep Air Canada
12 Sep - 30 Sep Delta
17 Sep - 23 Sep Lufthansa
01 Sep - 12 Sep Air Canada

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

Skyscanner

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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