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

Return flights

24 Sep - 01 Oct	ANA
15 Sep - 30 Sep	United
11 Sep - 22 Sep	United
11 Sep - 17 Sep	United
15 Sep - 01 Oct	United
16 Sep - 28 Sep	ANA
05 Sep - 21 Sep	United
07 Sep - 14 Sep	United
13 Sep - 26 Sep	United

Also check the deals for one-way flights from Mexico City to Singapore 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 Singapore in September from 987€

Return flights