Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Portland to Singapore from $437

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 3/2. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:50 am - 7:00 amPDX-SIN
30h 10m1 stop
Air Canada Logo
10:50 pm - 2:40 pmSIN-PDX
30h 50m2 stops
$802Air Canada
Find Deal
Thu, Mar 19 - Mon, Apr 27
Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
23h 45m1 stop
Air Canada Logo
9:00 pm - 9:15 amSIN-PDX
28h 15m2 stops
$822Air Canada
Find Deal
Tue, Jan 20 - Sun, Feb 1
Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
23h 45m1 stop
Air Canada Logo
9:00 pm - 9:15 amSIN-PDX
28h 15m2 stops
$824Air Canada
Find Deal
Tue, Jan 20 - Sun, Feb 1
Air Canada Logo
7:45 am - 7:00 amPDX-SIN
31h 15m2 stops
Air Canada Logo
9:00 pm - 9:15 amSIN-PDX
28h 15m2 stops
$825Air Canada
Find Deal
Tue, Jan 20 - Sun, Feb 1
Air Canada Logo
7:00 pm - 12:55 amPDX-SIN
37h 55m2 stops
Air Canada Logo
8:50 am - 12:44 amSIN-PDX
31h 54m2 stops
$831Air Canada
Find Deal
Sun, Feb 1 - Thu, Feb 19
Air Canada Logo
7:45 am - 7:00 amPDX-SIN
31h 15m2 stops
Air Canada Logo
9:00 pm - 9:15 amSIN-PDX
28h 15m2 stops
$833Air Canada
Find Deal
Tue, Jan 20 - Sun, Feb 1
Air Canada Logo
3:15 pm - 12:55 amPDX-SIN
41h 40m2 stops
Air Canada Logo
8:50 am - 2:40 pmSIN-PDX
21h 50m1 stop
$844Air Canada
Find Deal
Sun, Feb 1 - Thu, Feb 19
Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
23h 45m1 stop
Air Canada Logo
8:50 am - 6:30 pmSIN-PDX
25h 40m1 stop
$847Air Canada
Find Deal
Tue, Jan 20 - Sun, Feb 1
Multiple Airlines Logo
1:35 pm - 7:00 amPDX-SIN
25h 25m2 stops
Multiple Airlines Logo
8:50 am - 9:15 amSIN-PDX
16h 25m1 stop
$856Multiple Airlines
Find Deal
Thu, Jan 29 - Sat, Feb 14
Air Canada Logo
3:15 pm - 11:15 amPDX-SIN
28h 00m2 stops
Air Canada Logo
8:50 am - 2:40 pmSIN-PDX
21h 50m1 stop
$858Air Canada
Find Deal
Mon, Feb 2 - Fri, Feb 20

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Jan 8
PDX7:45 amPortland
20h 30m
1 stop
SIN8:15 pmSingapore Changi
Jan 20
SIN10:10 amSingapore Changi
20h 45m
1 stop
PDX2:55 pmPortland
$1,024
Find similar
United Airlines
Jan 8
PDX7:45 amPortland
20h 30m
1 stop
SIN8:15 pmSingapore Changi
Jan 20
SIN10:10 amSingapore Changi
20h 45m
1 stop
PDX2:55 pmPortland
$1,025
Find similar
United Airlines
Feb 1
PDX7:51 pmPortland
32h 24m
1 stop
SIN8:15 pmSingapore Changi
Feb 19
SIN10:10 amSingapore Changi
18h 28m
1 stop
PDX12:38 pmPortland
$1,031
Find similar

China Airlines flights from Portland to Singapore

Our best China Airlines deals on Portland to Singapore flight tickets
China Airlines
Jan 20
PDX10:33 amPortland
34h 32m
2 stops
SIN1:05 pmSingapore Changi
Jan 31
SIN2:00 amSingapore Changi
37h 32m
2 stops
PDX11:32 pmPortland
$1,029
Find similar
China Airlines
Jan 20
PDX4:51 pmPortland
39h 49m
2 stops
SIN12:40 amSingapore Changi
Jan 31
SIN2:00 amSingapore Changi
37h 32m
2 stops
PDX11:32 pmPortland
$1,030
Find similar
China Airlines
Feb 16
PDX2:40 pmPortland
30h 25m
2 stops
SIN1:05 pmSingapore Changi
Feb 28
SIN2:00 amSingapore Changi
47h 42m
2 stops
PDX9:42 amPortland
$1,042
Find similar

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 November 20, 2025.
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

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

9:50 am-7:00 am

1 stop30h 10m

Singapore Changi

Mon 4/27

10:50 pm-2:40 pm

2 stops30h 50m

$802

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/20

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Sun 2/1

9:00 pm-9:15 am

2 stops28h 15m

$822

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/20

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Sun 2/1

9:00 pm-9:15 am

2 stops28h 15m

$824

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/20

7:45 am-7:00 am

2 stops31h 15m

Singapore Changi

Sun 2/1

9:00 pm-9:15 am

2 stops28h 15m

$825

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 2/1

7:00 pm-12:55 am

2 stops37h 55m

Singapore Changi

Thu 2/19

8:50 am-12:44 am

2 stops31h 54m

$831

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/20

7:45 am-7:00 am

2 stops31h 15m

Singapore Changi

Sun 2/1

9:00 pm-9:15 am

2 stops28h 15m

$833

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 2/1

3:15 pm-12:55 am

2 stops41h 40m

Singapore Changi

Thu 2/19

8:50 am-2:40 pm

1 stop21h 50m

$844

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/20

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Sun 2/1

8:50 am-6:30 pm

1 stop25h 40m

$847

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 1/29

1:35 pm-7:00 am

2 stops25h 25m

Singapore Changi

Sat 2/14

8:50 am-9:15 am

1 stop16h 25m

$856

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/2

3:15 pm-11:15 am

2 stops28h 00m

Singapore Changi

Fri 2/20

8:50 am-2:40 pm

1 stop21h 50m

$858

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 September is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $749. If you aren’t able to travel to Singapore during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $880.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Portland to Singapore is on a Tuesday when prices can be found for as low as $1,256. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,673.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Portland to Singapore when you can find flight prices for as low as $1,121. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,334 on average. Flights to Singapore from Portland in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Singapore?

You are more likely to see cheaper flights to Singapore from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Singapore for around $993 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Singapore from Portland for as low as $730 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 37% 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

Direct flights

None
There are no direct flights from Portland to Singapore. There are no popular flight routes from Portland to Singapore.
Search flight deals

  • 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 $694Free CancellationRating
7.1
10,463 reviews
Search Air Canada flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,002 reviews
Search Delta flights
Korean AirPriceFrom $808Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
United AirlinesPriceFrom $868Free CancellationRating
7.4
9,028 reviews
Search United Airlines flights
Singapore AirlinesPriceFrom $890Free CancellationRating
8.1
1,407 reviews
Search Singapore 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.

An easier way to manage your Singapore trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/20
Sat 12/27
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Singapore

Popular cities in Singapore

Popular flights according to clicks in the last 7 days on momondo
Flights to Singaporefrom $531