AirHint found the following cheapest return flights from Lisbon (LIS) to Seoul (ICN) in July 2025 (see full year).

Return flights

21 Jul - 28 Jul	Ryanair
23 Jul - 28 Jul	Iberia
21 Jul - 04 Aug	KLM
30 Jul - 12 Aug	easyJet
24 Jul - 31 Jul	Air France
23 Jul - 30 Jul	TAP
29 Jul - 11 Aug	Iberia
22 Jul - 29 Jul	Ryanair
30 Jul - 06 Aug	Air France
26 Jul - 02 Aug	Air France
20 Jul - 27 Jul	easyJet
25 Jul - 01 Aug	Finnair
25 Jul - 27 Jul	Finnair
29 Jul - 13 Aug	Ryanair
29 Jul - 12 Aug	Air France
27 Jul - 03 Aug	easyJet
25 Jul - 30 Jul	Finnair
23 Jul - 25 Jul	TAP
22 Jul - 23 Jul	Iberia
30 Jul - 13 Aug	Air France

Also check the deals for one-way flights from Lisbon to Seoul in July.

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 Lisbon to Seoul in July from 798€

Return flights