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Cheap flights from Portland to Singapore from $327

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 3/5. 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
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
5:34 pm - 7:50 am
PDX
-
SIN
23h 16m
1 stop
Singapore Airlines Logo
9:00 am - 12:22 pm
SIN
-
PDX
18h 22m
1 stop
$859Singapore Airlines
Tue, Aug 4 - Tue, Sep 8
Singapore Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
8:45 pm - 9:38 am
SIN
-
PDX
27h 53m
1 stop
$861Singapore Airlines
Wed, Apr 22 - Mon, May 4
Air Canada Logo
3:15 pm - 7:00 am
PDX
-
SIN
24h 45m
1 stop
Air Canada Logo
10:50 pm - 6:30 pm
SIN
-
PDX
34h 40m
2 stops
$871Air Canada
Thu, Mar 19 - Mon, Apr 20
Air Canada Logo
7:45 pm - 5:15 am
PDX
-
SIN
18h 30m
1 stop
Air Canada Logo
7:00 am - 7:05 pm
SIN
-
PDX
27h 05m
1 stop
$880Air Canada
Fri, May 8 - Sun, May 24
Multiple Airlines Logo
1:36 pm - 9:35 am
PDX
-
SIN
28h 59m
2 stops
Multiple Airlines Logo
11:45 pm - 11:04 pm
SIN
-
PDX
38h 19m
2 stops
$885Multiple Airlines
Sun, Mar 8 - Tue, Mar 17
Singapore Airlines Logo
5:34 pm - 7:50 am
PDX
-
SIN
23h 16m
1 stop
Singapore Airlines Logo
8:45 pm - 10:25 am
SIN
-
PDX
28h 40m
1 stop
$905Singapore Airlines
Sat, Aug 15 - Mon, Aug 31
Multiple Airlines Logo
1:36 pm - 9:35 am
PDX
-
SIN
28h 59m
2 stops
Multiple Airlines Logo
12:05 am - 11:04 pm
SIN
-
PDX
37h 59m
2 stops
$906Multiple Airlines
Sun, Mar 8 - Tue, Mar 17
Singapore Airlines Logo
5:34 pm - 7:50 am
PDX
-
SIN
23h 16m
1 stop
Singapore Airlines Logo
8:45 pm - 10:25 am
SIN
-
PDX
28h 40m
1 stop
$922Singapore Airlines
Sat, Aug 15 - Mon, Aug 31
STARLUX Airlines Logo
5:36 pm - 12:40 pm
PDX
-
SIN
28h 04m
2 stops
STARLUX Airlines Logo
2:00 pm - 12:10 am
SIN
-
PDX
25h 10m
2 stops
$923STARLUX Airlines
Tue, Aug 4 - Mon, Sep 7
Asiana Airlines Logo
3:25 pm - 5:15 am
PDX
-
SIN
22h 50m
1 stop
Asiana Airlines Logo
8:10 am - 2:51 pm
SIN
-
PDX
21h 41m
2 stops
$929Asiana Airlines
Tue, Aug 4 - Tue, Sep 8

Singapore Airlines flights from Portland to Singapore

Our best Singapore Airlines deals on Portland to Singapore flight tickets
Singapore Airlines
Apr 22
PDX7:00 amPortland
21h 10m
1 stop
SIN7:10 pmSingapore Changi
May 4
SIN8:45 pmSingapore Changi
27h 53m
1 stop
PDX9:38 amPortland
$861
Singapore Airlines
Aug 15
PDX5:34 pmPortland
23h 16m
1 stop
SIN7:50 amSingapore Changi
Aug 31
SIN8:45 pmSingapore Changi
28h 40m
1 stop
PDX10:25 amPortland
$905
Singapore Airlines
Apr 22
PDX7:00 amPortland
21h 10m
1 stop
SIN7:10 pmSingapore Changi
May 1
SIN6:40 pmSingapore Changi
20h 04m
1 stop
PDX11:44 pmPortland
$976

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
May 8
PDX7:45 pmPortland
18h 30m
1 stop
SIN5:15 amSingapore Changi
May 24
SIN7:00 amSingapore Changi
27h 05m
1 stop
PDX7:05 pmPortland
$880
Air Canada
May 15
PDX3:25 pmPortland
22h 50m
1 stop
SIN5:15 amSingapore Changi
May 30
SIN7:00 amSingapore Changi
41h 30m
1 stop
PDX9:30 amPortland
$932
Air Canada
Apr 5
PDX3:15 pmPortland
23h 00m
1 stop
SIN5:15 amSingapore Changi
Apr 18
SIN7:00 amSingapore Changi
26h 30m
1 stop
PDX6:30 pmPortland
$933

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 February 16, 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

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/4

5:34 pm-7:50 am

1 stop23h 16m

Singapore Changi

Tue 9/8

9:00 am-12:22 pm

1 stop18h 22m

$859

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/22

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Mon 5/4

8:45 pm-9:38 am

1 stop27h 53m

$861

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Mon 4/20

10:50 pm-6:30 pm

2 stops34h 40m

$871

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 5/8

7:45 pm-5:15 am

1 stop18h 30m

Singapore Changi

Sun 5/24

7:00 am-7:05 pm

1 stop27h 05m

$880

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 3/8

1:36 pm-9:35 am

2 stops28h 59m

Singapore Changi

Tue 3/17

11:45 pm-11:04 pm

2 stops38h 19m

$885

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 8/15

5:34 pm-7:50 am

1 stop23h 16m

Singapore Changi

Mon 8/31

8:45 pm-10:25 am

1 stop28h 40m

$905

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 3/8

1:36 pm-9:35 am

2 stops28h 59m

Singapore Changi

Tue 3/17

12:05 am-11:04 pm

2 stops37h 59m

$906

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 8/15

5:34 pm-7:50 am

1 stop23h 16m

Singapore Changi

Mon 8/31

8:45 pm-10:25 am

1 stop28h 40m

$922

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/4

5:36 pm-12:40 pm

2 stops28h 04m

Singapore Changi

Mon 9/7

2:00 pm-12:10 am

2 stops25h 10m

$923

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 8/4

3:25 pm-5:15 am

1 stop22h 50m

Singapore Changi

Tue 9/8

8:10 am-2:51 pm

2 stops21h 41m

$929

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 September is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $753. If you aren’t able to travel to Singapore during the month of September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $837.

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 $1,013 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 31% 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

21h 10m

Direct flights

None
The fastest flight from Portland to Singapore takes 21h 10m
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
10,725 reviews
Search Air Canada flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,191 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,206 reviews
Search Delta flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,456 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $870Free CancellationRating
7.4
9,308 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.

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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