AirHint found the following cheapest return flights from Delhi (DEL) to Seoul (ICN) in October 2026 (see full year).

Return flights

04 Oct - 15 Oct	Vietnam Airlines
03 Oct - 14 Oct	Vietnam Airlines
10 Oct - 15 Oct	Vietnam Airlines
02 Oct - 10 Oct	Vietnam Airlines
24 Oct - 01 Nov	Vietnam Airlines
01 Oct - 10 Oct	Vietnam Airlines
02 Oct - 10 Oct	Air India	direct
01 Oct - 10 Oct	Air India	direct
04 Oct - 15 Oct	Air India	direct
10 Oct - 15 Oct	Air India	direct
28 Oct - 08 Nov	Korean Air	direct

Also check the deals for one-way flights from Delhi to Seoul in October.

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 Delhi to Seoul in October from 278€

Return flights