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

Return flights

31 Oct - 06 Nov	Alaska Airlines
31 Oct - 13 Nov	Alaska Airlines
29 Oct - 20 Nov	jetBlue
29 Oct - 10 Nov	jetBlue
28 Oct - 04 Nov	Korean Air
14 Oct - 21 Oct	China Airlines
08 Oct - 17 Oct	Singapore Airlines
18 Oct - 21 Oct	China Airlines
16 Oct - 31 Oct	Delta
20 Oct - 17 Nov	Alaska Airlines
23 Oct - 28 Nov	Delta
12 Oct - 20 Oct	Alaska Airlines
17 Oct - 21 Oct	Alaska Airlines
08 Oct - 18 Oct	Alaska Airlines
19 Oct - 17 Nov	EVA Air
19 Oct - 16 Nov	EVA Air
11 Oct - 18 Oct	Alaska Airlines
09 Oct - 17 Oct	Alaska Airlines
30 Oct - 29 Nov	jetBlue
17 Oct - 20 Oct	Japan 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 $969

Return flights