Cheapest return flights from Seattle to Bangkok in October from $644

Best time to book flights for Seattle (SEA) to Bangkok (BKK) flights at AirHint

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

Return flights

02 Oct - 25 Oct Singapore Airlines
23 Oct - 14 Nov Singapore Airlines
04 Oct - 11 Oct Singapore Airlines
01 Oct - 06 Oct China Airlines
15 Oct - 29 Oct Asiana Airlines
13 Oct - 28 Oct China Airlines
01 Oct - 23 Oct China Airlines
29 Oct - 25 Nov China Airlines
01 Oct - 27 Oct China Airlines
16 Oct - 24 Nov Asiana Airlines
31 Oct - 30 Nov China Airlines

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

Skyscanner

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