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

Return flights

24 Sep - 01 Oct	Air France
30 Sep - 07 Oct	Air France
10 Sep - 17 Sep	Virgin Atlantic
04 Sep - 11 Sep	Delta
14 Sep - 21 Sep	Air France
03 Sep - 10 Sep	KLM
20 Sep - 27 Sep	Virgin Atlantic
11 Sep - 18 Sep	Air France
08 Sep - 15 Sep	Air France
01 Sep - 08 Sep	Air France
15 Sep - 22 Sep	Air France
28 Sep - 05 Oct	Air France
18 Sep - 25 Sep	Air France
29 Sep - 06 Oct	Air France
25 Sep - 02 Oct	Air France
27 Sep - 04 Oct	KLM
26 Sep - 03 Oct	Air France

Also check the deals for one-way flights from Long Beach 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 Long Beach to Lisbon in September from 632€

Return flights