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

Return flights

09 May - 16 May	Vietnam Airlines
07 May - 14 May	Vietnam Airlines
22 May - 31 May	Vietnam Airlines
08 May - 17 May	Vietnam Airlines
19 May - 26 May	Vietnam Airlines
17 May - 27 May	Vietnam Airlines
01 May - 07 May	Vietnam Airlines
21 May - 02 Jun	Vietnam Airlines
01 May - 09 May	Singapore Airlines
01 May - 09 May	Air India	direct
07 May - 14 May	Air India	direct
21 May - 02 Jun	Air India	direct

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

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 May from 257€

Return flights