Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Portland to Singapore from $495

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 9/5. 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.
Multiple Airlines Logo
7:18 am - 2:25 amPDX  Portland-SIN Singapore Changi
28h 07m2 stops San Francisco Shanghai Pu Dong
Multiple Airlines Logo
11:00 pm - 4:34 pmSIN  Singapore Changi-PDX Portland
32h 34m2 stops Shanghai Pu Dong Los Angeles Los Angeles
$943Multiple Airlines
Mon, Oct 19 - Mon, Oct 26
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 Los Angeles
$1,002Japan Airlines
Wed, Sep 2 - Tue, Sep 8
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 Los Angeles
$1,003Japan Airlines
Wed, Sep 2 - Tue, Sep 8
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
3:43 pm - 6:15 amPDX  Portland-SIN Singapore Changi
23h 32m1 stop San Francisco
United Airlines Logo
8:45 am - 10:45 pmSIN  Singapore Changi-PDX Portland
29h 00m1 stop San Francisco
$1,146United Airlines
Thu, Sep 3 - Tue, Sep 22
United Airlines Logo
7:00 am - 6:35 pmPDX  Portland-SIN Singapore Changi
20h 35m1 stop San Francisco
United Airlines Logo
8:45 am - 2:57 pmSIN  Singapore Changi-PDX Portland
21h 12m1 stop San Francisco
$1,146United Airlines
Sun, Aug 23 - Tue, Sep 1

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

Japan Airlines flights from Portland to Singapore

Our best Japan Airlines deals on Portland to Singapore flight tickets
Japan Airlines
Sep 2
PDX7:03 amPortland
43h 42m
2 stops
SIN5:45 pmSingapore Changi
Sep 8
SIN9:50 pmSingapore Changi
39h 16m
2 stops
PDX10:06 pmPortland
$1,002
Japan Airlines
Sep 14
PDX7:03 amPortland
32h 07m
2 stops
SIN6:10 amSingapore Changi
Sep 20
SIN1:55 amSingapore Changi
29h 55m
2 stops
PDX4:50 pmPortland
$1,003
Japan Airlines
Sep 24
PDX7:03 amPortland
32h 07m
2 stops
SIN6:10 amSingapore Changi
Sep 30
SIN1:55 amSingapore Changi
26h 55m
2 stops
PDX1:50 pmPortland
$1,017

Delta flights from Portland to Singapore

Our best Delta deals on Portland to Singapore flight tickets
Delta
Sep 7
PDX6:47 amPortland
31h 13m
2 stops
SIN5:00 amSingapore Changi
Sep 23
SIN7:30 amSingapore Changi
31h 24m
2 stops
PDX11:54 pmPortland
$1,005
Delta
Aug 24
PDX9:29 amPortland
42h 46m
2 stops
SIN7:15 pmSingapore Changi
Sep 2
SIN1:25 amSingapore Changi
33h 19m
2 stops
PDX7:44 pmPortland
$1,083
Delta
Aug 21
PDX7:05 amPortland
30h 55m
2 stops
SIN5:00 amSingapore Changi
Aug 31
SIN1:25 amSingapore Changi
33h 19m
2 stops
PDX7:44 pmPortland
$1,096

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 10, 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

Mon 10/19

7:18 am-2:25 am

2 stops28h 07m

Singapore Changi

Mon 10/26

11:00 pm-4:34 pm

2 stops32h 34m

$943

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 9/2

7:03 am-5:45 pm

2 stops43h 42m

Singapore Changi

Tue 9/8

9:50 pm-10:06 pm

2 stops39h 16m

$1,003
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

Thu 9/3

3:43 pm-6:15 am

1 stop23h 32m

Singapore Changi

Tue 9/22

8:45 am-10:45 pm

1 stop29h 00m

$1,146

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 8/23

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Tue 9/1

8:45 am-2:57 pm

1 stop21h 12m

$1,146

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 typical price of a round-trip flight between Portland and Singapore?

Prices are currently low for flights on this route.

Typical prices usually range from $989 to $1,240.
The lowest price recently found on this route was $943.

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.

How have Portland to Singapore flight prices changed over time?

When to book flights from Portland to Singapore

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Singapore according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Portland to Singapore (PDX to SIN) flight deals and tips

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

Fastest flight time

18h 30m

Direct flights

None
The fastest flight from Portland to Singapore takes 18h 30m
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

  • How far is Portland to Singapore Changi by plane?

    The straight-line distance from Portland to Singapore Changi is 8130.5 mi. In terms of flight time, this usually takes a little over 18h 30m.

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

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

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

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

    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 Changi Airport.

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

    The travel and health documents required for your trip to Singapore Changi Airport 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 Changi Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Portland to Singapore?

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?

Finding the right flight to Singapore from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Singapore quick and easy, saving you time and money.

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

Flights from Portland to Singapore with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

If you are simply researching potential flights to Singapore, momondo offers a useful price alert feature which will track prices for flights to Singapore from Portland and alert you when they change.

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
Wed 9/9
Wed 9/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Singapore

Fly your favorite airline to Singapore

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Singapore Airlines
Air Canada
United Airlines