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Cheap flights from Portland to Singapore from $476

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Singapore departing on 8/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Japan Airlines Logo
7:03 am - 5:45 pmPDX  Portland-SIN Singapore Changi
43h 42m2 stops San Francisco Tokyo Haneda
Japan Airlines Logo
9:50 pm - 10:06 pmSIN  Singapore Changi-PDX Portland
39h 16m2 stops Tokyo Haneda Los Angeles
$1,002Japan Airlines
Wed, Sep 2 - Tue, Sep 8
Japan Airlines Logo
7:03 am - 6:10 amPDX  Portland-SIN Singapore Changi
32h 07m2 stops San Francisco Tokyo Haneda
Japan Airlines Logo
9:50 pm - 4:50 pmSIN  Singapore Changi-PDX Portland
34h 00m2 stops Tokyo Haneda San Francisco
$1,002Japan Airlines
Wed, Sep 9 - Tue, Sep 15
Japan Airlines Logo
7:03 am - 6:10 amPDX  Portland-SIN Singapore Changi
32h 07m2 stops San Francisco Tokyo Haneda
Japan Airlines Logo
1:55 am - 4:50 pmSIN  Singapore Changi-PDX Portland
29h 55m2 stops Tokyo Haneda San Francisco
$1,003Japan Airlines
Mon, Sep 14 - Sun, Sep 20
Air Canada Logo
3:15 pm - 7:00 amPDX  Portland-SIN Singapore Changi
23h 45m1 stop Vancouver Intl
Air Canada Logo
8:40 am - 9:26 amSIN  Singapore Changi-PDX Portland
16h 46m1 stop Vancouver Intl
$1,052Air Canada
Tue, Nov 3 - Tue, Nov 17
Air Canada Logo
10:10 am - 5:15 amPDX  Portland-SIN Singapore Changi
28h 05m1 stop Vancouver Intl
Air Canada Logo
7:00 am - 2:51 pmSIN  Singapore Changi-PDX Portland
22h 51m1 stop Vancouver Intl
$1,057Air Canada
Thu, Sep 24 - Thu, Oct 1
Air Canada Logo
10:10 am - 5:15 amPDX  Portland-SIN Singapore Changi
28h 05m1 stop Vancouver Intl
Air Canada Logo
7:00 am - 2:51 pmSIN  Singapore Changi-PDX Portland
22h 51m1 stop Vancouver Intl
$1,062Air Canada
Thu, Aug 27 - Thu, Sep 3
Singapore Airlines Logo
9:50 pm - 7:05 pmPDX  Portland-SIN Singapore Changi
29h 15m1 stop San Francisco
Singapore Airlines Logo
9:15 am - 8:48 pmSIN  Singapore Changi-PDX Portland
27h 33m1 stop San Francisco
$1,073Singapore Airlines
Mon, Feb 1 - Mon, Feb 15
Singapore Airlines Logo
7:18 am - 7:10 pmPDX  Portland-SIN Singapore Changi
20h 52m1 stop San Francisco
Singapore Airlines Logo
9:05 am - 8:50 pmSIN  Singapore Changi-PDX Portland
26h 45m1 stop San Francisco
$1,073Singapore Airlines
Mon, Oct 12 - Thu, Oct 22
United Airlines Logo
7:00 am - 6:35 pmPDX  Portland-SIN Singapore Changi
20h 35m1 stop San Francisco
United Airlines Logo
8:35 pm - 10:11 amSIN  Singapore Changi-PDX Portland
28h 36m1 stop San Francisco
$1,146United Airlines
Tue, Aug 25 - Thu, Sep 3
United Airlines Logo
7:15 pm - 6:15 amPDX  Portland-SIN Singapore Changi
20h 00m1 stop San Francisco
United Airlines Logo
8:45 am - 2:47 pmSIN  Singapore Changi-PDX Portland
21h 02m1 stop San Francisco
$1,146United Airlines
Fri, Aug 21 - Thu, Sep 3

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Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
Nov 3
PDX3:15 pmPortland
23h 45m
1 stop
SIN7:00 amSingapore Changi
Nov 17
SIN8:40 amSingapore Changi
16h 46m
1 stop
PDX9:26 amPortland
$1,052
Air Canada
Sep 24
PDX10:10 amPortland
28h 05m
1 stop
SIN5:15 amSingapore Changi
Oct 1
SIN7:00 amSingapore Changi
22h 51m
1 stop
PDX2:51 pmPortland
$1,057
Air Canada
Aug 27
PDX10:10 amPortland
28h 05m
1 stop
SIN5:15 amSingapore Changi
Sep 3
SIN7:00 amSingapore Changi
22h 51m
1 stop
PDX2:51 pmPortland
$1,062

Singapore Airlines flights from Portland to Singapore

Our best Singapore Airlines deals on Portland to Singapore flight tickets
Singapore Airlines
Feb 1
PDX9:50 pmPortland
29h 15m
1 stop
SIN7:05 pmSingapore Changi
Feb 15
SIN9:15 amSingapore Changi
27h 33m
1 stop
PDX8:48 pmPortland
$1,073
Singapore Airlines
Jan 21
PDX9:50 pmPortland
29h 15m
1 stop
SIN7:05 pmSingapore Changi
Feb 11
SIN9:15 amSingapore Changi
23h 35m
1 stop
PDX4:50 pmPortland
$1,120

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Singapore that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Wed 9/2

7:03 am-5:45 pm

2 stops43h 42m

Singapore Changi

Tue 9/8

9:50 pm-10:06 pm

2 stops39h 16m

$1,002

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Wed 9/9

7:03 am-6:10 am

2 stops32h 07m

Singapore Changi

Tue 9/15

9:50 pm-4:50 pm

2 stops34h 00m

$1,002

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 9/14

7:03 am-6:10 am

2 stops32h 07m

Singapore Changi

Sun 9/20

1:55 am-4:50 pm

2 stops29h 55m

$1,003
Quickest round-trip

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 11/3

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Tue 11/17

8:40 am-9:26 am

1 stop16h 46m

$1,052

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 9/24

10:10 am-5:15 am

1 stop28h 05m

Singapore Changi

Thu 10/1

7:00 am-2:51 pm

1 stop22h 51m

$1,057

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 8/27

10:10 am-5:15 am

1 stop28h 05m

Singapore Changi

Thu 9/3

7:00 am-2:51 pm

1 stop22h 51m

$1,062

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 2/1

9:50 pm-7:05 pm

1 stop29h 15m

Singapore Changi

Mon 2/15

9:15 am-8:48 pm

1 stop27h 33m

$1,073

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 10/12

7:18 am-7:10 pm

1 stop20h 52m

Singapore Changi

Thu 10/22

9:05 am-8:50 pm

1 stop26h 45m

$1,073

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 8/25

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Thu 9/3

8:35 pm-10:11 am

1 stop28h 36m

$1,146

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Fri 8/21

7:15 pm-6:15 am

1 stop20h 00m

Singapore Changi

Thu 9/3

8:45 am-2:47 pm

1 stop21h 02m

$1,146

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Singapore from

How to get the cheapest flight ticket from Portland to Singapore

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Singapore?

The month of January is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $891. If you aren’t able to travel to Singapore during the month of January, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $990.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 23% on your flight if you consider stops on a Portland to Singapore flight.

Cheap Portland to Singapore flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Singapore

Fastest flight time

26h 01m

Direct flights

None
The fastest flight from Portland to Singapore takes 26h 01m
There are no direct flights from Portland to Singapore. There are no popular flight routes from Portland to Singapore.
Search flight deals

Frequently asked questions about flying from Portland to Singapore

  • When did momondo last update prices for flights from Portland Airport to Singapore?

    Prices for flights from Portland Airport to Singapore were last updated today.

  • How many operators does momondo search for flights from Portland Airport to Singapore?

  • How old do you have to be to fly from Portland Airport to Singapore?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portland Airport to Singapore.

  • What documentation or ID do you need to fly to Singapore?

    The travel and health documents required for your trip to Singapore can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Singapore. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Singapore

Compare and see reviews for airlines that fly from Portland to Singapore with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $734Free CancellationRating
7.1
11,460 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $789Free CancellationRating
8.2
1,584 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
10,100 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Singapore?

It is quick and easy to find Portland to Singapore flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Singapore that suits you.

Can I find flights from Portland to Singapore with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Portland to Singapore flights to just show those with flexible booking policies.

How can momondo help me find flights from Portland to Singapore?

Once you have performed a search for Portland to Singapore flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Singapore right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Singapore flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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