AirHint found the following cheapest return flights from Seoul (GMP) to Lisbon (LIS) in July 2026 (see full year).

Return flights

08 Jul - 12 Jul	Japan Airlines
31 Jul - 05 Aug	Japan Airlines
01 Jul - 08 Jul	Japan Airlines
15 Jul - 22 Jul	Japan Airlines
15 Jul - 19 Jul	Japan Airlines
06 Jul - 23 Jul	Japan Airlines
15 Jul - 26 Jul	Japan Airlines
09 Jul - 24 Jul	Japan Airlines
31 Jul - 08 Aug	Japan Airlines
31 Jul - 07 Aug	Japan Airlines
29 Jul - 07 Aug	Japan Airlines
16 Jul - 20 Jul	Japan Airlines
23 Jul - 30 Jul	Japan Airlines
24 Jul - 31 Jul	Japan Airlines
29 Jul - 09 Aug	Japan Airlines
26 Jul - 03 Aug	Japan Airlines
26 Jul - 05 Aug	Japan Airlines
29 Jul - 02 Aug	Japan Airlines
24 Jul - 03 Aug	Japan Airlines
26 Jul - 02 Aug	Japan Airlines

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 1801€

Return flights