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

Return flights

04 Dec - 16 Dec	Turkish Airlines
08 Dec - 23 Dec	Turkish Airlines
08 Dec - 25 Dec	Turkish Airlines
01 Dec - 08 Dec	Turkish Airlines
02 Dec - 10 Dec	Turkish Airlines
08 Dec - 15 Dec	Turkish Airlines
02 Dec - 15 Dec	Turkish Airlines
01 Dec - 14 Dec	ANA
01 Dec - 13 Dec	Turkish Airlines
05 Dec - 07 Dec	Turkish Airlines
29 Dec - 12 Jan	Delta
28 Dec - 22 Jan	Aer Lingus
16 Dec - 13 Jan	ANA
16 Dec - 30 Jan	Japan Airlines
16 Dec - 24 Jan	ANA
11 Dec - 12 Jan	Spirit Airlines
06 Dec - 10 Jan	Japan Airlines
10 Dec - 15 Jan	Japan Airlines
16 Dec - 06 Jan	ANA
10 Dec - 05 Jan	Spirit Airlines

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 $722

Return flights