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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 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

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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.
Multiple Airlines Logo
5:35 pm - 9:05 am
PDX
-
SIN
24h 30m
2 stops
Multiple Airlines Logo
2:30 pm - 12:10 am
SIN
-
PDX
24h 40m
2 stops
$699Multiple Airlines
Tue, Sep 1 - Tue, Sep 22
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
$893Singapore Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
10:30 am - 5:30 am
PDX
-
SIN
28h 00m
2 stops
Multiple Airlines Logo
8:05 pm - 9:46 am
SIN
-
PDX
28h 41m
2 stops
$931Multiple Airlines
Thu, Sep 3 - Mon, Sep 7
Multiple Airlines Logo
5:30 pm - 1:15 pm
PDX
-
SIN
28h 45m
2 stops
Multiple Airlines Logo
2:30 pm - 12:10 am
SIN
-
PDX
24h 40m
2 stops
$933Multiple Airlines
Thu, Aug 6 - Tue, Sep 1
Cathay Pacific Logo
7:05 am - 12:45 am
PDX
-
SIN
26h 40m
2 stops
Cathay Pacific Logo
8:05 pm - 9:35 pm
SIN
-
PDX
40h 30m
2 stops
$937Cathay Pacific
Mon, Apr 13 - Tue, Apr 21
Multiple Airlines Logo
7:10 am - 5:00 pm
PDX
-
SIN
42h 50m
2 stops
Multiple Airlines Logo
12:55 am - 11:44 pm
SIN
-
PDX
37h 49m
2 stops
$943Multiple Airlines
Wed, Apr 22 - Sat, May 2
Multiple Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Multiple Airlines Logo
8:45 pm - 9:38 am
SIN
-
PDX
27h 53m
1 stop
$951Multiple Airlines
Wed, Apr 22 - Sun, May 3
Singapore Airlines Logo
2:30 pm - 7:40 am
PDX
-
SIN
26h 10m
1 stop
Singapore Airlines Logo
9:00 am - 12:22 pm
SIN
-
PDX
18h 22m
1 stop
$954Singapore Airlines
Tue, Sep 1 - Tue, Sep 22
Cathay Pacific Logo
7:14 am - 12:45 am
PDX
-
SIN
26h 31m
2 stops
Cathay Pacific Logo
1:25 pm - 8:35 pm
SIN
-
PDX
22h 10m
2 stops
$967Cathay Pacific
Tue, Apr 21 - Tue, Apr 28
ANA Logo
6:54 am - 12:45 am
PDX
-
SIN
26h 51m
2 stops
ANA Logo
12:50 am - 6:11 pm
SIN
-
PDX
32h 21m
2 stops
$968ANA
Mon, Aug 24 - Fri, Sep 4

ANA flights from Portland to Singapore

Our best ANA deals on Portland to Singapore flight tickets
ANA
Aug 24
PDX6:54 amPortland
26h 51m
2 stops
SIN12:45 amSingapore Changi
Sep 4
SIN12:50 amSingapore Changi
32h 21m
2 stops
PDX6:11 pmPortland
$968
ANA
Aug 24
PDX6:54 amPortland
26h 51m
2 stops
SIN12:45 amSingapore Changi
Sep 1
SIN12:50 amSingapore Changi
28h 57m
2 stops
PDX2:47 pmPortland
$974
ANA
Apr 22
PDX5:30 amPortland
26h 50m
2 stops
SIN11:20 pmSingapore Changi
May 1
SIN12:50 amSingapore Changi
30h 43m
2 stops
PDX4:33 pmPortland
$1,001

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Mar 11
PDX1:36 pmPortland
34h 19m
2 stops
SIN2:55 pmSingapore Changi
Mar 16
SIN3:15 amSingapore Changi
27h 33m
2 stops
PDX3:48 pmPortland
$1,004
Qatar Airways
Mar 17
PDX8:30 amPortland
33h 15m
2 stops
SIN8:45 amSingapore Changi
Apr 29
SIN7:40 pmSingapore Changi
38h 54m
2 stops
PDX7:34 pmPortland
$1,012
Qatar Airways
Mar 17
PDX8:30 amPortland
33h 15m
2 stops
SIN8:45 amSingapore Changi
Apr 30
SIN7:40 pmSingapore Changi
38h 54m
2 stops
PDX7:34 pmPortland
$1,031

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 March 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 - SIN

PDXSIN

Portland

Tue 9/1

5:35 pm-9:05 am

2 stops24h 30m

Singapore Changi

Tue 9/22

2:30 pm-12:10 am

2 stops24h 40m

$699

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/22

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Wed 4/29

8:45 pm-9:38 am

1 stop27h 53m

$893

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 9/3

10:30 am-5:30 am

2 stops28h 00m

Singapore Changi

Mon 9/7

8:05 pm-9:46 am

2 stops28h 41m

$931

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8/6

5:30 pm-1:15 pm

2 stops28h 45m

Singapore Changi

Tue 9/1

2:30 pm-12:10 am

2 stops24h 40m

$933

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4/13

7:05 am-12:45 am

2 stops26h 40m

Singapore Changi

Tue 4/21

8:05 pm-9:35 pm

2 stops40h 30m

$937

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/22

7:10 am-5:00 pm

2 stops42h 50m

Singapore Changi

Sat 5/2

12:55 am-11:44 pm

2 stops37h 49m

$943

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/22

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Sun 5/3

8:45 pm-9:38 am

1 stop27h 53m

$951
Quickest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/1

2:30 pm-7:40 am

1 stop26h 10m

Singapore Changi

Tue 9/22

9:00 am-12:22 pm

1 stop18h 22m

$954

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/21

7:14 am-12:45 am

2 stops26h 31m

Singapore Changi

Tue 4/28

1:25 pm-8:35 pm

2 stops22h 10m

$967

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/24

6:54 am-12:45 am

2 stops26h 51m

Singapore Changi

Fri 9/4

12:50 am-6:11 pm

2 stops32h 21m

$968

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 cheapest month to fly to Singapore?

The month of May is, on average, the cheapest month to fly to Singapore from Portland, with most prices found around $828. If you aren’t able to travel to Singapore during the month of May, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $874.

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 $1,032 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 25% 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

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

  • 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 21h 10m.

  • 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
10,800 reviews
Search Air Canada flights
Korean AirPriceFrom $786Free CancellationRating
8.4
1,202 reviews
Search Korean Air flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,471 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $880Free CancellationRating
7.4
9,409 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
Korean Air