Cheapest one-way flights from Seattle to Bangkok in January from $283

AirHint found the following cheapest one-way flights from Seattle (SEA) to Bangkok (BKK) in January 2026 (see full year).

One-Way flights

16 Jan Singapore Airlines
25 Jan Singapore Airlines
30 Jan Singapore Airlines
11 Jan Singapore Airlines
04 Jan Singapore Airlines
08 Jan Hainan Airlines
21 Jan Philippine Airlines
20 Jan Hainan Airlines
09 Jan Singapore Airlines
12 Jan Korean Air

Also check the deals for return flights from Seattle to Bangkok in January.

Powered by

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

Feel free to contact us with any feedback or request another flight research.