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

Return flights

19 Jan - 04 Feb	Etihad Airways
18 Jan - 28 Jan	Etihad Airways
21 Jan - 11 Feb	Etihad Airways
26 Jan - 09 Feb	Etihad Airways
26 Jan - 03 Feb	Etihad Airways
26 Jan - 05 Feb	Etihad Airways
29 Jan - 05 Feb	Etihad Airways
28 Jan - 07 Feb	Etihad Airways
26 Jan - 08 Feb	Etihad Airways
26 Jan - 10 Feb	Qatar Airways
28 Jan - 11 Feb	Qatar Airways
19 Jan - 29 Jan	Qatar Airways
13 Jan - 27 Jan	United
06 Jan - 20 Jan	United
18 Jan - 25 Jan	Qatar Airways
07 Jan - 21 Jan	Etihad Airways
09 Jan - 28 Jan	ANA
18 Jan - 24 Jan	Etihad Airways
14 Jan - 19 Jan	Etihad Airways
17 Jan - 25 Jan	United

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 720€

Return flights