Cheapest return flights from Singapore to Seattle in May from $778

Best time to book flights for Singapore (SIN) to Seattle (SEA) flights at AirHint

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

Return flights

23 May - 30 May STARLUX Airlines
22 May - 01 Jun STARLUX Airlines
21 May - 31 May STARLUX Airlines
24 May - 31 May STARLUX Airlines
31 May - 10 Jun STARLUX Airlines
31 May - 09 Jun STARLUX Airlines
31 May - 11 Jun STARLUX Airlines
22 May - 01 Jun Singapore Airlines direct
24 May - 31 May Singapore Airlines direct
31 May - 10 Jun Singapore Airlines direct

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

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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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