AirHint found the following cheapest return flights from Washington (IAD) to Bangkok (BKK) in October 2025 (see full year).

Return flights

18 Oct - 04 Nov	Saudia
31 Oct - 13 Nov	Saudia
18 Oct - 28 Oct	Saudia
18 Oct - 21 Oct	Saudia
18 Oct - 08 Nov	Saudia
28 Oct - 13 Nov	Etihad Airways
10 Oct - 02 Nov	Etihad Airways
08 Oct - 17 Oct	Etihad Airways
09 Oct - 22 Oct	Etihad Airways
28 Oct - 16 Nov	Etihad Airways
29 Oct - 19 Nov	Etihad Airways
30 Oct - 13 Nov	Etihad Airways
20 Oct - 17 Nov	Etihad Airways
19 Oct - 17 Nov	Etihad Airways
14 Oct - 28 Oct	Etihad Airways
19 Oct - 23 Oct	Frontier Airlines
20 Oct - 28 Oct	Qatar Airways
08 Oct - 15 Oct	Qatar Airways
23 Oct - 28 Oct	Turkish Airlines
14 Oct - 21 Oct	Turkish Airlines

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

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.

Book a cheap hotel in Bangkok

Cheap car rent in Bangkok

Cheapest return flights from Washington to Bangkok in October from $759

Return flights