Cheapest return flights from Singapore to Seattle in December from $821

AirHint found the following cheapest return flights from Singapore (SIN) to Seattle (SEA) in December 2025 (see full year).

Return flights

24 Dec - 03 Jan STARLUX Airlines
25 Dec - 04 Jan STARLUX Airlines
20 Dec - 28 Dec STARLUX Airlines
13 Dec - 13 Jan STARLUX Airlines
25 Dec - 04 Jan Singapore Airlines direct
20 Dec - 28 Dec Singapore Airlines direct
25 Dec - 09 Jan United
13 Dec - 13 Jan Singapore Airlines direct

Also check the deals for one-way flights from Singapore to Seattle in December.

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.

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