AirHint found the following cheapest return flights from Busan (PUS) to Lisbon (LIS) in September 2025 (see full year).

Return flights

12 Sep - 19 Sep	Air China
11 Sep - 19 Sep	Air China
06 Sep - 13 Sep	Air China
05 Sep - 12 Sep	Air China
22 Sep - 30 Sep	Vietnam Airlines
06 Sep - 12 Sep	Air China
05 Sep - 13 Sep	Air China
13 Sep - 20 Sep	Air China
10 Sep - 17 Sep	Air China
17 Sep - 24 Sep	HK Express
25 Sep - 09 Oct	Vietnam Airlines
28 Sep - 01 Oct	Korean Air
27 Sep - 12 Oct	Korean Air

Also check the deals for one-way flights from Busan 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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Cheapest return flights from Busan to Lisbon in September from 674€

Return flights