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

Return flights

28 Aug - 11 Sep	United
25 Aug - 04 Sep	United
13 Aug - 27 Aug	Delta
11 Aug - 27 Aug	Delta
28 Aug - 07 Sep	Delta
28 Aug - 08 Sep	Delta
13 Aug - 17 Sep	United
14 Aug - 17 Sep	United
12 Aug - 31 Aug	Delta
20 Aug - 27 Aug	Delta
18 Aug - 27 Aug	Delta
06 Aug - 17 Sep	Delta
12 Aug - 26 Aug	Delta
07 Aug - 11 Sep	Delta
11 Aug - 25 Aug	Delta
18 Aug - 24 Aug	Delta
14 Aug - 26 Aug	Delta
11 Aug - 31 Aug	Delta
11 Aug - 01 Sep	Delta
14 Aug - 01 Sep	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 634€

Return flights