AirHint found the following cheapest return flights from Los Angeles (LAX) to Bangkok (BKK) in September 2025 (see full year).

Return flights

20 Sep - 27 Sep	Air Premia
22 Sep - 28 Sep	Air Premia
15 Sep - 29 Sep	Air Premia
20 Sep - 28 Sep	Air Premia
16 Sep - 24 Sep	Air Premia
16 Sep - 29 Sep	Air Premia
21 Sep - 28 Sep	Air Premia
17 Sep - 15 Oct	Air Premia
27 Sep - 25 Oct	Air Premia
28 Sep - 05 Oct	Air Premia
22 Sep - 06 Oct	Air Premia
27 Sep - 27 Oct	Air Premia
27 Sep - 26 Oct	Air Premia
27 Sep - 04 Oct	Air Premia
26 Sep - 05 Oct	Air Premia
26 Sep - 06 Oct	Air Premia
26 Sep - 04 Oct	Air Premia
15 Sep - 18 Sep	Air Premia
17 Sep - 20 Sep	Air Premia
27 Sep - 29 Sep	Air Premia

Also check the deals for one-way flights from Los Angeles to Bangkok 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 Los Angeles to Bangkok in September from 551€

Return flights