AirHint found the following cheapest return flights from Washington (DCA) to Bangkok (BKK) in January 2026 (see full year).

Return flights

18 Jan - 01 Feb	Korean Air
26 Jan - 02 Feb	ANA
22 Jan - 29 Jan	ANA
28 Jan - 13 Feb	Korean Air
12 Jan - 23 Feb	Delta
15 Jan - 26 Feb	Delta
20 Jan - 07 Feb	Delta
11 Jan - 11 Feb	Delta
21 Jan - 24 Feb	Alaska Airlines
12 Jan - 19 Jan	Alaska Airlines
04 Jan - 28 Jan	Delta
21 Jan - 02 Feb	ANA
15 Jan - 24 Jan	Alaska Airlines
13 Jan - 23 Feb	China Airlines
16 Jan - 31 Jan	Delta
17 Jan - 25 Jan	Alaska Airlines
16 Jan - 24 Jan	Alaska Airlines
02 Jan - 21 Jan	Alaska Airlines
09 Jan - 18 Jan	Alaska Airlines
13 Jan - 19 Jan	Delta

Also check the deals for one-way flights from Washington to Bangkok in January.

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 Washington to Bangkok in January from $927

Return flights