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

Return flights

01 Apr - 07 Apr	Air France
03 Apr - 07 Apr	Air France
07 Apr - 14 Apr	Lufthansa
01 Apr - 09 Apr	Lufthansa
06 Apr - 13 Apr	Air France
27 Apr - 03 May	Air China
17 Apr - 25 Apr	Air China
14 Apr - 21 Apr	Lufthansa
06 Apr - 14 Apr	Air France
01 Apr - 30 Apr	Lufthansa
22 Apr - 06 May	Lufthansa
21 Apr - 28 Apr	Lufthansa
28 Apr - 14 May	Lufthansa
28 Apr - 05 May	Lufthansa
24 Apr - 04 May	China Eastern
26 Apr - 02 May	China Southern
29 Apr - 06 May	Lufthansa
27 Apr - 04 May	Lufthansa
21 Apr - 04 May	Lufthansa
30 Apr - 07 May	Lufthansa

Also check the deals for one-way flights from Seoul to Porto 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 Seoul to Porto in April from $734

Return flights