Cheapest return flights from Seattle to Singapore in June from $838

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 June 2025 (see full year).

Return flights

22 Jun - 29 Jun Air Canada
13 Jun - 12 Jul Air Canada
29 Jun - 13 Jul Air Canada
29 Jun - 05 Jul Air Canada
13 Jun - 12 Jul Singapore Airlines direct
19 Jun - 26 Jun United
29 Jun - 13 Jul Singapore Airlines direct
29 Jun - 05 Jul Singapore Airlines direct
22 Jun - 04 Jul United
22 Jun - 04 Jul Singapore Airlines direct
22 Jun - 29 Jun Singapore Airlines direct

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

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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