Portland (PDX) to Singapore (SIN) cheap flight deal from $619 USD in economy class

ACAir Canada

Round Trip

•

Economy

PDX

Portland International Airport

Portland, United States

SIN

Singapore Changi Airport

Singapore, Singapore

$984 USD

-37%$619 USD

Verified 1 day ago

September 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$705 2$659 3$669 4$643 5$676 6$698 7$691 8$646 9$628 10$666 11$619 12$641 13$673 14$659 15$646 16$628 17$639 18$619 19$643 20$673 21$659 22$673 23$628 24$767 25$619 26$643 27$673 28$659 29$635 30$628 1$767 2$619 3$736 4$673 5$659

Extremely Rare Availability

2% of dates checked are available within 10% of the lowest price

Monday, September 15th, 2025

10 round-trip options

Returning

Sat, Sep 20, 2025•5 Day Trip

$749 USD

Google Flights

Returning

Sun, Sep 21, 2025•6 Day Trip

$741 USD

Google Flights

Returning

Mon, Sep 22, 2025•7 Day Trip

$741 USD

Google Flights

Returning

Tue, Sep 23, 2025•8 Day Trip

$731 USD

Google Flights

Returning

Wed, Sep 24, 2025•9 Day Trip

$738 USD

Google Flights

Returning

Thu, Sep 25, 2025•10 Day Trip

$731 USD

Google Flights

Returning

Fri, Sep 26, 2025•11 Day Trip

$756 USD

Google Flights

Returning

Sat, Sep 27, 2025•12 Day Trip

$646 USD

Google Flights

Returning

Sun, Sep 28, 2025•13 Day Trip

$741 USD

Google Flights

Returning

Mon, Sep 29, 2025•14 Day Trip

$741 USD

Google Flights