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

Return flights

03 Dec - 10 Dec	Delta
01 Dec - 09 Dec	Delta
02 Dec - 12 Dec	Delta
02 Dec - 11 Dec	Delta
04 Dec - 11 Dec	Delta
03 Dec - 26 Dec	Delta
02 Dec - 17 Dec	Delta
03 Dec - 17 Dec	Delta
30 Dec - 27 Jan	Delta
03 Dec - 08 Dec	Delta
01 Dec - 14 Dec	TAP
29 Dec - 13 Jan	Delta
09 Dec - 15 Jan	Air India
31 Dec - 14 Jan	Turkish Airlines
29 Dec - 19 Jan	Delta
29 Dec - 14 Jan	Delta
30 Dec - 18 Jan	SWISS
28 Dec - 15 Jan	Turkish Airlines
28 Dec - 14 Jan	Turkish Airlines
27 Dec - 14 Jan	Lufthansa

Also check the deals for one-way flights from Newark to Bangkok in December.

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 December from 731€

Return flights