Cheapest return flights from Seattle to Singapore in May from 1237€

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 May 2025 (see full year).

Return flights

31 May - 29 Jun Asiana Airlines
31 May - 29 Jun Singapore Airlines direct

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

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.

Book a cheap hotel in Singapore

Cheap car rent in Singapore