AirHint found the following cheapest return flights from Hong Kong (HKG) to Lisbon (LIS) in August 2025 (see full year).

Return flights

18 Aug - 27 Aug	Finnair
13 Aug - 16 Sep	Finnair
19 Aug - 26 Aug	Finnair
11 Aug - 29 Aug	Air France
14 Aug - 28 Aug	Finnair
11 Aug - 30 Aug	Finnair
19 Aug - 30 Aug	Finnair
18 Aug - 29 Aug	Finnair
21 Aug - 31 Aug	Finnair
12 Aug - 23 Aug	KLM
25 Aug - 31 Aug	Finnair
27 Aug - 11 Sep	Finnair
07 Aug - 09 Sep	Finnair
27 Aug - 06 Sep	Finnair
28 Aug - 04 Sep	Finnair
28 Aug - 12 Sep	Qatar Airways
31 Aug - 07 Sep	Air France
28 Aug - 06 Sep	Finnair
29 Aug - 08 Sep	Finnair
29 Aug - 07 Sep	Finnair

Also check the deals for one-way flights from Hong Kong to Lisbon in August.

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 Hong Kong to Lisbon in August from $776

Return flights