Cheapest return flights from Seattle to Singapore in June from $927

AirHint found the following cheapest return flights from Seattle (SEA) to Singapore (SIN) in June 2026 (see full year).

Return flights

02 Jun - 07 Jun United
04 Jun - 07 Jun United
03 Jun - 07 Jun United
23 Jun - 03 Jul Korean Air
16 Jun - 14 Jul Alaska Airlines
16 Jun - 06 Jul Alaska Airlines
16 Jun - 24 Jun Alaska Airlines
12 Jun - 25 Jun Alaska Airlines
16 Jun - 29 Jun Alaska Airlines
16 Jun - 07 Jul Alaska Airlines
16 Jun - 13 Jul Alaska Airlines
13 Jun - 25 Jun United
16 Jun - 28 Jul Alaska Airlines
16 Jun - 30 Jun Alaska Airlines
16 Jun - 22 Jun United
16 Jun - 23 Jun United
16 Jun - 16 Jul Alaska Airlines
16 Jun - 21 Jul Alaska Airlines
16 Jun - 15 Jul WestJet
16 Jun - 27 Jul Alaska Airlines

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

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