Cheapest one-way flights from Seattle to Bangkok in April from 346€

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

AirHint found the following cheapest one-way flights from Seattle (SEA) to Bangkok (BKK) in April 2025 (see full year).

One-Way flights

27 Apr Singapore Airlines
20 Apr Singapore Airlines
29 Apr Spirit Airlines
16 Apr Spirit Airlines
14 Apr China Airlines
09 Apr Alaska Airlines
24 Apr Spirit Airlines
04 Apr Alaska Airlines
10 Apr Alaska Airlines
03 Apr ANA

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

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