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

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

One-Way flights

19 Mar Singapore Airlines
06 Mar Singapore Airlines
10 Mar Singapore Airlines
20 Mar Singapore Airlines
14 Mar Singapore Airlines
24 Mar Hainan Airlines
04 Mar Philippine Airlines
26 Mar Asiana Airlines
27 Mar Philippine Airlines

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

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.