AirHint found the following cheapest return flights from Newark (EWR) to Bangkok (BKK) in August 2025 (see full year).

Return flights

25 Aug - 08 Sep	Air India
26 Aug - 09 Sep	United
28 Aug - 11 Sep	United
28 Aug - 09 Sep	United
13 Aug - 27 Aug	Delta
19 Aug - 26 Aug	Delta
28 Aug - 04 Sep	Delta
19 Aug - 02 Sep	Delta
26 Aug - 07 Sep	Delta
28 Aug - 03 Sep	ANA
14 Aug - 27 Aug	ANA
18 Aug - 27 Aug	Delta
20 Aug - 27 Aug	Delta
27 Aug - 08 Sep	Air India
19 Aug - 30 Aug	Delta
18 Aug - 25 Aug	Delta
04 Aug - 31 Aug	Delta
04 Aug - 03 Sep	Delta
11 Aug - 25 Aug	Delta
24 Aug - 31 Aug	Delta

Also check the deals for one-way flights from Newark to Bangkok 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 Newark to Bangkok in August from $736

Return flights