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

Return flights

17 Sep - 24 Sep	Air Canada
17 Sep - 30 Sep	Air Canada
18 Sep - 30 Sep	Air Canada
15 Sep - 22 Sep	Air Canada
18 Sep - 01 Oct	Air Canada
23 Sep - 30 Sep	Air Canada
22 Sep - 30 Sep	Air Canada
19 Sep - 02 Oct	Air Canada
14 Sep - 18 Sep	Air Canada
19 Sep - 22 Sep	Air Canada
14 Sep - 17 Sep	Air Canada
15 Sep - 21 Sep	Air Canada
29 Sep - 06 Oct	United
26 Sep - 07 Oct	United
19 Sep - 03 Oct	Air Canada
01 Sep - 31 Oct	United
01 Sep - 01 Oct	United
01 Sep - 06 Oct	United
26 Sep - 06 Oct	United
27 Sep - 07 Oct	United

Also check the deals for one-way flights from Seoul to Mexico City 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.

Book a cheap hotel in Mexico City

Cheap car rent in Mexico City

Cheapest return flights from Seoul to Mexico City in September from 682€

Return flights