AirHint found the following cheapest return flights from Los Angeles (LAX) to Lisbon (LIS) in August 2025 (see full year).

Return flights

18 Aug - 27 Aug	British Airways
19 Aug - 27 Aug	Iberia
25 Aug - 02 Sep	Aer Lingus
11 Aug - 19 Aug	Brussels Airlines
12 Aug - 21 Aug	SWISS
17 Aug - 02 Sep	Norse Atlantic Airways
20 Aug - 02 Sep	Delta
17 Aug - 30 Aug	Delta
16 Aug - 30 Aug	Delta
03 Aug - 22 Aug	Delta
17 Aug - 26 Aug	Lufthansa
21 Aug - 31 Aug	Delta
21 Aug - 30 Aug	Delta
26 Aug - 05 Sep	Iberia
26 Aug - 04 Sep	Turkish Airlines
18 Aug - 01 Sep	Norse Atlantic Airways
30 Aug - 02 Sep	Scandinavian Airlines
27 Aug - 02 Sep	Delta
30 Aug - 05 Sep	Norse Atlantic Airways
30 Aug - 04 Sep	Norse Atlantic Airways

Also check the deals for one-way flights from Los Angeles 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 Los Angeles to Lisbon in August from 471€

Return flights