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

Return flights

11 Sep - 22 Sep	Hawaiian Airlines
18 Sep - 22 Sep	Hawaiian Airlines
17 Sep - 06 Oct	Hawaiian Airlines
17 Sep - 09 Oct	Hawaiian Airlines
12 Sep - 19 Sep	Hawaiian Airlines
11 Sep - 25 Sep	Hawaiian Airlines
16 Sep - 24 Sep	Hawaiian Airlines
02 Sep - 22 Sep	Hawaiian Airlines
03 Sep - 21 Sep	Viva
04 Sep - 17 Sep	Hawaiian Airlines
12 Sep - 27 Sep	Hawaiian Airlines
09 Sep - 13 Sep	Hawaiian Airlines
29 Sep - 08 Oct	Alaska Airlines
17 Sep - 11 Oct	Alaska Airlines
29 Sep - 20 Oct	Alaska Airlines
29 Sep - 29 Oct	Alaska Airlines
29 Sep - 06 Oct	United
14 Sep - 02 Oct	United
22 Sep - 04 Oct	United
25 Sep - 09 Oct	United

Also check the deals for one-way flights from Monterrey to Seoul 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 Monterrey to Seoul in September from 627€

Return flights