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

Return flights

28 Jul - 30 Jul	Lufthansa
29 Jul - 12 Aug	Air France
27 Jul - 29 Jul	Lufthansa
27 Jul - 30 Jul	Lufthansa
31 Jul - 13 Aug	Air France
29 Jul - 05 Aug	Air France
31 Jul - 12 Aug	Air France
29 Jul - 11 Aug	Air France
31 Jul - 05 Aug	Air France
27 Jul - 05 Aug	KLM
30 Jul - 24 Aug	SWISS
30 Jul - 10 Aug	KLM
31 Jul - 11 Aug	Air France
28 Jul - 31 Jul	Lufthansa
27 Jul - 31 Jul	Lufthansa
30 Jul - 30 Jul	Korean Air	direct

Also check the deals for one-way flights from Seoul to Lisbon 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 Seoul to Lisbon in July from 782€

Return flights