AirHint found the following cheapest return flights from New York (JFK) to Bangkok (DMK) in September 2025 (see full year).

Return flights

21 Sep - 03 Oct	Philippine Airlines
21 Sep - 13 Oct	Philippine Airlines
21 Sep - 29 Sep	Philippine Airlines
26 Sep - 10 Oct	Philippine Airlines
24 Sep - 02 Oct	Etihad Airways
23 Sep - 21 Oct	Etihad Airways
22 Sep - 06 Oct	Air India
24 Sep - 01 Oct	SWISS
22 Sep - 29 Sep	SWISS
22 Sep - 03 Oct	IndiGo
21 Sep - 28 Sep	IndiGo
22 Sep - 10 Oct	Etihad Airways
24 Sep - 28 Sep	IndiGo
22 Sep - 02 Oct	Etihad Airways
23 Sep - 26 Sep	IndiGo
23 Sep - 30 Sep	IndiGo
22 Sep - 24 Sep	Etihad Airways
20 Sep - 24 Sep	IndiGo
26 Sep - 30 Sep	Philippine Airlines
25 Sep - 30 Sep	ANA

Also check the deals for one-way flights from New York 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 New York to Bangkok in September from $750

Return flights