Cheapest one-way flights from Seattle to Bangkok in April from 364€

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

20 Apr Singapore Airlines
29 Apr Singapore Airlines
24 Apr Singapore Airlines
08 Apr Singapore Airlines
17 Apr Singapore Airlines
09 Apr Spirit Airlines
03 Apr WestJet
21 Apr ANA
23 Apr Spirit Airlines
11 Apr Delta

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