Cheapest return flights from Singapore to Seattle in December from $863
AirHint found the following cheapest return flights from Singapore (SIN) to Seattle (SEA) in December 2025 (see full year).
Return flights
| 18 Dec - 30 Dec | EVA Air | ||
| 12 Dec - 27 Dec | EVA Air | ||
| 01 Dec - 09 Dec | Delta | ||
| 18 Dec - 30 Dec | Singapore Airlines | direct | |
| 12 Dec - 27 Dec | Singapore Airlines | direct | |
| 12 Dec - 31 Jan | Delta |
Also check the deals for one-way flights from Singapore to Seattle in December.
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.
