AirHint found the following cheapest return flights from Seoul (GMP) to Lisbon (LIS) in September 2025 (see full year).
Return flights
| 26 Sep - 03 Oct | Korean Air | ||
| 25 Sep - 02 Oct | Air China | ||
| 28 Sep - 30 Sep | Japan Airlines | ||
| 28 Sep - 12 Oct | Japan Airlines | ||
| 28 Sep - 05 Oct | Japan Airlines |
Also check the deals for one-way flights from Seoul to Lisbon in September.
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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