Cheapest return flights from Seattle to Singapore in January from 592€

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

Return flights

21 Jan - 27 Jan Philippine Airlines
28 Jan - 11 Feb Delta
19 Jan - 27 Jan United
23 Jan - 29 Jan Air Canada
17 Jan - 25 Jan United
23 Jan - 29 Jan Singapore Airlines direct
04 Jan - 14 Feb Singapore Airlines direct
05 Jan - 14 Feb Frontier Airlines
03 Jan - 31 Jan Hainan Airlines
03 Jan - 14 Feb Hawaiian Airlines
03 Jan - 14 Feb Singapore Airlines direct
17 Jan - 25 Jan Singapore Airlines direct

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

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