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

Return flights

17 Feb - 03 Mar	China Airlines
15 Feb - 18 Feb	China Airlines
24 Feb - 05 Mar	EVA Air
23 Feb - 10 Mar	EVA Air
14 Feb - 17 Feb	Alaska Airlines
25 Feb - 10 Mar	EVA Air
21 Feb - 10 Mar	EVA Air
15 Feb - 23 Feb	Alaska Airlines
09 Feb - 12 Feb	Delta
11 Feb - 17 Feb	ANA
11 Feb - 18 Feb	ANA
17 Feb - 28 Feb	Cathay Pacific
25 Feb - 07 Mar	Cathay Pacific
15 Feb - 24 Feb	EVA Air
09 Feb - 13 Feb	Delta
26 Feb - 11 Mar	EVA Air
27 Feb - 06 Mar	EVA Air
27 Feb - 11 Mar	EVA Air
10 Feb - 15 Feb	Cathay Pacific
26 Feb - 19 Mar	ANA

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

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 February from $985

Return flights