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

Return flights

19 Aug - 26 Aug	American Airlines
18 Aug - 29 Aug	British Airways
26 Aug - 02 Sep	Aer Lingus
18 Aug - 25 Aug	Iberia
20 Aug - 02 Sep	Delta
08 Aug - 22 Aug	Iberia
21 Aug - 28 Aug	Delta
31 Aug - 09 Sep	FrenchBee
18 Aug - 01 Sep	Iberia
26 Aug - 04 Sep	Iberia
08 Aug - 19 Aug	Iberia
19 Aug - 30 Aug	Air France
17 Aug - 24 Aug	Air France
14 Aug - 24 Aug	Iberia
15 Aug - 19 Aug	Lufthansa
27 Aug - 03 Sep	Delta
31 Aug - 07 Sep	Delta
25 Aug - 01 Sep	Austrian Airlines
26 Aug - 01 Sep	Air Canada
31 Aug - 06 Sep	Air Canada

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 $565

Return flights