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Cheap flights from Portland to Singapore from $413

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 8/6. 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.
United Airlines Logo
7:00 am - 6:35 pm
PDX
-
SIN
20h 35m
1 stop
United Airlines Logo
8:45 am - 10:45 pm
SIN
-
PDX
29h 00m
1 stop
$891United Airlines
Mon, Aug 3 - Mon, Aug 17
United Airlines Logo
11:05 am - 6:15 am
PDX
-
SIN
28h 10m
2 stops
United Airlines Logo
8:35 pm - 10:11 am
SIN
-
PDX
28h 36m
1 stop
$895United Airlines
Tue, Aug 4 - Thu, Aug 20
United Airlines Logo
6:46 pm - 6:35 pm
PDX
-
SIN
32h 49m
1 stop
United Airlines Logo
8:35 pm - 10:11 am
SIN
-
PDX
28h 36m
1 stop
$896United Airlines
Sun, Aug 2 - Thu, Aug 20
United Airlines Logo
3:36 pm - 6:55 am
PDX
-
SIN
47h 19m
2 stops
United Airlines Logo
10:20 pm - 12:54 am
SIN
-
PDX
18h 34m
1 stop
$900United Airlines
Wed, Nov 11 - Mon, Dec 7
United Airlines Logo
11:16 am - 6:35 pm
PDX
-
SIN
40h 19m
1 stop
United Airlines Logo
8:35 pm - 1:14 pm
SIN
-
PDX
31h 39m
2 stops
$901United Airlines
Sun, Aug 2 - Wed, Aug 19
United Airlines Logo
5:15 am - 6:35 pm
PDX
-
SIN
22h 20m
1 stop
United Airlines Logo
6:15 am - 12:30 am
SIN
-
PDX
33h 15m
2 stops
$902United Airlines
Mon, Aug 3 - Thu, Aug 20
United Airlines Logo
5:30 am - 12:55 am
PDX
-
SIN
27h 25m
2 stops
United Airlines Logo
10:20 pm - 12:54 am
SIN
-
PDX
18h 34m
1 stop
$903United Airlines
Thu, Nov 12 - Tue, Dec 8
United Airlines Logo
5:00 am - 6:15 am
PDX
-
SIN
34h 15m
2 stops
United Airlines Logo
6:15 am - 10:45 pm
SIN
-
PDX
31h 30m
2 stops
$907United Airlines
Tue, Aug 4 - Tue, Aug 18
United Airlines Logo
6:46 pm - 6:35 pm
PDX
-
SIN
32h 49m
1 stop
United Airlines Logo
6:15 am - 10:45 pm
SIN
-
PDX
31h 30m
2 stops
$908United Airlines
Sun, Aug 2 - Tue, Aug 18
United Airlines Logo
7:00 am - 12:45 am
PDX
-
SIN
26h 45m
2 stops
United Airlines Logo
8:45 am - 8:59 pm
SIN
-
PDX
27h 14m
1 stop
$910United Airlines
Mon, Aug 3 - Mon, Aug 17

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ANA flights from Portland to Singapore

Our best ANA deals on Portland to Singapore flight tickets
ANA
Aug 17
PDX7:00 amPortland
26h 45m
2 stops
SIN12:45 amSingapore Changi
Sep 1
SIN6:15 amSingapore Changi
27h 04m
2 stops
PDX6:19 pmPortland
$947
ANA
Nov 11
PDX5:30 amPortland
44h 05m
2 stops
SIN5:35 pmSingapore Changi
Dec 8
SIN6:35 amSingapore Changi
27h 56m
2 stops
PDX6:31 pmPortland
$954
ANA
Nov 3
PDX6:53 amPortland
42h 42m
2 stops
SIN5:35 pmSingapore Changi
Nov 17
SIN6:35 amSingapore Changi
23h 59m
2 stops
PDX2:34 pmPortland
$959

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
Aug 4
PDX7:45 pmPortland
18h 30m
1 stop
SIN5:15 amSingapore Changi
Aug 18
SIN7:00 amSingapore Changi
17h 31m
1 stop
PDX9:31 amPortland
$918
Air Canada
Oct 1
PDX10:10 amPortland
28h 05m
1 stop
SIN5:15 amSingapore Changi
Oct 10
SIN7:00 amSingapore Changi
22h 51m
1 stop
PDX2:51 pmPortland
$949
Air Canada
Aug 2
PDX7:45 pmPortland
18h 30m
1 stop
SIN5:15 amSingapore Changi
Aug 18
SIN7:00 amSingapore Changi
17h 31m
1 stop
PDX9:31 amPortland
$970

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 July 2, 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 - SIN

PDXSIN

Portland

Mon 8/3

7:00 am-6:35 pm

1 stop20h 35m

Singapore Changi

Mon 8/17

8:45 am-10:45 pm

1 stop29h 00m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/4

11:05 am-6:15 am

2 stops28h 10m

Singapore Changi

Thu 8/20

8:35 pm-10:11 am

1 stop28h 36m

$895

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 8/2

6:46 pm-6:35 pm

1 stop32h 49m

Singapore Changi

Thu 8/20

8:35 pm-10:11 am

1 stop28h 36m

$896

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 11/11

3:36 pm-6:55 am

2 stops47h 19m

Singapore Changi

Mon 12/7

10:20 pm-12:54 am

1 stop18h 34m

$900

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 8/2

11:16 am-6:35 pm

1 stop40h 19m

Singapore Changi

Wed 8/19

8:35 pm-1:14 pm

2 stops31h 39m

$901

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/3

5:15 am-6:35 pm

1 stop22h 20m

Singapore Changi

Thu 8/20

6:15 am-12:30 am

2 stops33h 15m

$902
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 11/12

5:30 am-12:55 am

2 stops27h 25m

Singapore Changi

Tue 12/8

10:20 pm-12:54 am

1 stop18h 34m

$903

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/4

5:00 am-6:15 am

2 stops34h 15m

Singapore Changi

Tue 8/18

6:15 am-10:45 pm

2 stops31h 30m

$907

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 8/2

6:46 pm-6:35 pm

1 stop32h 49m

Singapore Changi

Tue 8/18

6:15 am-10:45 pm

2 stops31h 30m

$908

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/3

7:00 am-12:45 am

2 stops26h 45m

Singapore Changi

Mon 8/17

8:45 am-8:59 pm

1 stop27h 14m

$910

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?

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 October is also cheap. Prices for this month can be found on momondo for an average of $986.

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 $1,097 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 $822 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 2% 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

19h 46m

Direct flights

None
The fastest flight from Portland to Singapore takes 19h 46m
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 19h 46m.

  • 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 $726Free CancellationRating
7.1
11,286 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,557 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $1,024Free CancellationRating
7.4
9,924 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.
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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