Cheapest return flights from Seattle to Singapore in March from $612

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

Return flights

04 Mar - 11 Mar United
01 Mar - 20 Mar United
05 Mar - 12 Mar United
01 Mar - 05 Mar United
04 Mar - 10 Mar Korean Air
23 Mar - 25 Mar United
24 Mar - 29 Mar Asiana Airlines
07 Mar - 15 Mar United
07 Mar - 20 Mar United
24 Mar - 26 Mar United
31 Mar - 10 Apr Singapore Airlines direct
27 Mar - 10 Apr Singapore Airlines direct
29 Mar - 10 Apr Singapore Airlines direct
19 Mar - 09 Apr United
19 Mar - 09 Apr Singapore Airlines direct

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

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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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