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Cheap flights from Portland to Singapore from $417

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 8/19. 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

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Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
6:20 am - 5:35 pm
PDX
-
SIN
20h 15m
1 stop
Singapore Airlines Logo
9:00 am - 1:27 pm
SIN
-
PDX
19h 27m
1 stop
$932Singapore Airlines
Fri, Sep 18 - Sat, Oct 3
Air Canada Logo
10:10 am - 5:15 am
PDX
-
SIN
28h 05m
1 stop
Air Canada Logo
7:00 am - 9:31 am
SIN
-
PDX
17h 31m
1 stop
$952Air Canada
Thu, Aug 27 - Thu, Sep 10
Singapore Airlines Logo
7:19 am - 7:10 pm
PDX
-
SIN
20h 51m
1 stop
Singapore Airlines Logo
9:05 am - 4:50 pm
SIN
-
PDX
22h 45m
1 stop
$953Singapore Airlines
Mon, Aug 17 - Tue, Sep 1
Singapore Airlines Logo
6:00 pm - 7:55 am
PDX
-
SIN
21h 55m
1 stop
Singapore Airlines Logo
9:00 am - 10:50 am
SIN
-
PDX
17h 50m
1 stop
$957Singapore Airlines
Tue, Nov 10 - Tue, Dec 8
Air Canada Logo
7:00 am - 7:00 am
PDX
-
SIN
32h 00m
1 stop
Air Canada Logo
8:50 am - 8:46 pm
SIN
-
PDX
27h 56m
1 stop
$972Air Canada
Thu, Nov 12 - Tue, Dec 8
Multiple Airlines Logo
2:45 pm - 7:55 am
PDX
-
SIN
25h 10m
1 stop
Multiple Airlines Logo
9:00 am - 10:50 am
SIN
-
PDX
17h 50m
1 stop
$980Multiple Airlines
Tue, Nov 10 - Tue, Dec 8
Singapore Airlines Logo
7:03 am - 7:10 pm
PDX
-
SIN
21h 07m
1 stop
Singapore Airlines Logo
9:00 am - 5:00 pm
SIN
-
PDX
23h 00m
1 stop
$984Singapore Airlines
Thu, Oct 1 - Sat, Oct 10
Multiple Airlines Logo
11:57 am - 5:45 pm
PDX
-
SIN
37h 48m
1 stop
Multiple Airlines Logo
9:00 am - 1:50 pm
SIN
-
PDX
20h 50m
1 stop
$991Multiple Airlines
Tue, Dec 1 - Fri, Dec 18
Multiple Airlines Logo
7:03 am - 7:10 pm
PDX
-
SIN
21h 07m
1 stop
Multiple Airlines Logo
9:05 am - 1:50 pm
SIN
-
PDX
19h 45m
1 stop
$994Multiple Airlines
Wed, Sep 2 - Sun, Sep 13
Multiple Airlines Logo
7:03 am - 5:25 am
PDX
-
SIN
31h 22m
2 stops
Multiple Airlines Logo
12:55 am - 4:36 pm
SIN
-
PDX
30h 41m
2 stops
$997Multiple Airlines
Wed, Aug 26 - Tue, Sep 8

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
Aug 27
PDX10:10 amPortland
28h 05m
1 stop
SIN5:15 amSingapore Changi
Sep 10
SIN7:00 amSingapore Changi
17h 31m
1 stop
PDX9:31 amPortland
$952
Air Canada
Nov 12
PDX7:00 amPortland
32h 00m
1 stop
SIN7:00 amSingapore Changi
Dec 8
SIN8:50 amSingapore Changi
27h 56m
1 stop
PDX8:46 pmPortland
$972
Air Canada
Nov 8
PDX7:10 pmPortland
19h 50m
1 stop
SIN7:00 amSingapore Changi
Dec 8
SIN8:50 amSingapore Changi
16h 36m
1 stop
PDX9:26 amPortland
$1,006

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Nov 10
PDX1:53 pmPortland
26h 52m
2 stops
SIN8:45 amSingapore Changi
Dec 7
SIN8:15 pmSingapore Changi
34h 40m
2 stops
PDX2:55 pmPortland
$1,042
Qatar Airways
Oct 1
PDX1:59 pmPortland
27h 51m
2 stops
SIN8:50 amSingapore Changi
Oct 10
SIN7:40 pmSingapore Changi
36h 20m
2 stops
PDX5:00 pmPortland
$1,058
Qatar Airways
Aug 17
PDX5:00 amPortland
43h 45m
2 stops
SIN3:45 pmSingapore Changi
Aug 31
SIN3:15 amSingapore Changi
28h 34m
2 stops
PDX4:49 pmPortland
$1,065

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 June 4, 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
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 9/18

6:20 am-5:35 pm

1 stop20h 15m

Singapore Changi

Sat 10/3

9:00 am-1:27 pm

1 stop19h 27m

$932

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8/27

10:10 am-5:15 am

1 stop28h 05m

Singapore Changi

Thu 9/10

7:00 am-9:31 am

1 stop17h 31m

$952

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

7:19 am-7:10 pm

1 stop20h 51m

Singapore Changi

Tue 9/1

9:05 am-4:50 pm

1 stop22h 45m

$953

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/10

6:00 pm-7:55 am

1 stop21h 55m

Singapore Changi

Tue 12/8

9:00 am-10:50 am

1 stop17h 50m

$957

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 11/12

7:00 am-7:00 am

1 stop32h 00m

Singapore Changi

Tue 12/8

8:50 am-8:46 pm

1 stop27h 56m

$972

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/10

2:45 pm-7:55 am

1 stop25h 10m

Singapore Changi

Tue 12/8

9:00 am-10:50 am

1 stop17h 50m

$980

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/1

7:03 am-7:10 pm

1 stop21h 07m

Singapore Changi

Sat 10/10

9:00 am-5:00 pm

1 stop23h 00m

$984

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 12/1

11:57 am-5:45 pm

1 stop37h 48m

Singapore Changi

Fri 12/18

9:00 am-1:50 pm

1 stop20h 50m

$991

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 9/2

7:03 am-7:10 pm

1 stop21h 07m

Singapore Changi

Sun 9/13

9:05 am-1:50 pm

1 stop19h 45m

$994

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 8/26

7:03 am-5:25 am

2 stops31h 22m

Singapore Changi

Tue 9/8

12:55 am-4:36 pm

2 stops30h 41m

$997

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 typical price of a round-trip flight between Portland and Singapore?

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 $857. 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 $913.

How far in advance should I book a flight from Portland 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 $1,050 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 $778 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 5% 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

20h 51m

Direct flights

None
The fastest flight from Portland to Singapore takes 20h 51m
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 20h 51m.

  • 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 $694Free CancellationRating
7.1
11,126 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,530 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
9,775 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

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Fly your favorite airline to Singapore

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