AirHint found the following cheapest return flights from Newark (EWR) to Bangkok (BKK) in September 2026 (see full year).

Return flights

01 Sep - 30 Sep	United
02 Sep - 10 Sep	ANA
01 Sep - 10 Sep	ANA
04 Sep - 13 Sep	United
26 Sep - 04 Oct	Air India
01 Sep - 06 Sep	ANA
02 Sep - 12 Sep	ANA
13 Sep - 24 Sep	ANA
03 Sep - 12 Sep	ANA
06 Sep - 15 Sep	ANA
11 Sep - 01 Oct	Delta
19 Sep - 26 Sep	Delta
27 Sep - 03 Oct	Turkish Airlines

Also check the deals for one-way flights from Newark 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 Newark to Bangkok in September from $763

Return flights