Cheapest return flights from Seattle to Singapore in April from 551€

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

Return flights

03 Apr - 10 May Singapore Airlines direct
14 Apr - 23 Apr Cathay Pacific
16 Apr - 30 Apr Cathay Pacific
07 Apr - 16 Apr Cathay Pacific
15 Apr - 30 Apr Cathay Pacific
19 Apr - 28 Apr Frontier Airlines
10 Apr - 24 Apr Singapore Airlines
14 Apr - 23 Apr Singapore Airlines direct
16 Apr - 30 Apr Singapore Airlines direct
07 Apr - 16 Apr Singapore Airlines direct
19 Apr - 28 Apr Singapore Airlines direct

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

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