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

Return flights

05 Apr - 07 Apr	VietJet Air
01 Apr - 08 Apr	Singapore Airlines
06 Apr - 15 Apr	Singapore Airlines
11 Apr - 18 Apr	Singapore Airlines
02 Apr - 09 Apr	Singapore Airlines
04 Apr - 06 Apr	VietJet Air
02 Apr - 09 Apr	Air India	direct
06 Apr - 08 Apr	Thai AirAsia X
05 Apr - 07 Apr	Air India	direct
11 Apr - 18 Apr	Air India	direct

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

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 April from 295€

Return flights