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

Return flights

23 Sep - 16 Oct	Delta
04 Sep - 14 Sep	Aeromexico
09 Sep - 25 Sep	Delta
09 Sep - 18 Sep	Delta
15 Sep - 29 Sep	Delta
25 Sep - 16 Oct	Delta
17 Sep - 01 Oct	Delta
02 Sep - 25 Sep	Finnair
05 Sep - 21 Sep	Volaris
18 Sep - 04 Oct	KLM
03 Sep - 25 Sep	Aeromexico
01 Sep - 01 Oct	Finnair
09 Sep - 21 Sep	Delta
15 Sep - 06 Oct	Air France
01 Sep - 09 Sep	Finnair
01 Sep - 18 Sep	Finnair
27 Sep - 04 Oct	Air France
15 Sep - 02 Oct	Air France
16 Sep - 14 Oct	Air Canada
10 Sep - 06 Oct	Lufthansa

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

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 Frankfurt in September from $902

Return flights