Cheapest return flights from Seattle to Singapore in July from $847

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 July 2025 (see full year).

Return flights

31 Jul - 23 Aug Air Canada
31 Jul - 25 Aug United
05 Jul - 27 Jul Air Canada
01 Jul - 31 Jul Air Canada
06 Jul - 28 Jul China Airlines
07 Jul - 10 Jul United
08 Jul - 11 Jul United
06 Jul - 25 Jul Air Canada
08 Jul - 11 Jul Singapore Airlines direct
06 Jul - 25 Jul Singapore Airlines direct
05 Jul - 27 Jul Singapore Airlines direct
01 Jul - 31 Jul Singapore Airlines direct

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

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