Cheapest one-way flights from Seattle to Singapore in January from 377€
AirHint found the following cheapest one-way flights from Seattle (SEA) to Singapore (SIN) in January 2025 (see full year).
One-Way flights
Also check the deals for return flights from Seattle to Singapore in January.
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.
