Cheapest return flights from Seattle to Singapore in April from $683

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

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

Return flights

03 Apr - 10 Apr Singapore Airlines direct
03 Apr - 14 Apr United

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

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