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Cheap flights from Portland to Singapore from $384

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 3/9. 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
7:05 am - 7:10 pm
PDX
-
SIN
21h 05m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
19h 35m
1 stop
$801Singapore Airlines
Tue, Apr 14 - Tue, Apr 21
Singapore Airlines Logo
7:05 am - 7:05 pm
PDX
-
SIN
21h 00m
1 stop
Singapore Airlines Logo
9:00 am - 9:38 pm
SIN
-
PDX
27h 38m
1 stop
$870Singapore Airlines
Thu, Mar 26 - Sat, Apr 18
Singapore Airlines Logo
2:37 pm - 7:50 am
PDX
-
SIN
26h 13m
1 stop
Singapore Airlines Logo
9:15 am - 8:32 pm
SIN
-
PDX
26h 17m
1 stop
$888Singapore Airlines
Mon, Apr 13 - Mon, Apr 20
STARLUX Airlines Logo
7:27 pm - 12:40 pm
PDX
-
SIN
26h 13m
2 stops
STARLUX Airlines Logo
2:00 pm - 10:53 pm
SIN
-
PDX
23h 53m
2 stops
$918STARLUX Airlines
Tue, Apr 21 - Tue, May 12
Multiple Airlines Logo
7:27 pm - 12:40 pm
PDX
-
SIN
26h 13m
2 stops
Multiple Airlines Logo
2:00 pm - 9:38 pm
SIN
-
PDX
22h 38m
2 stops
$922Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Singapore Airlines Logo
7:05 am - 7:05 pm
PDX
-
SIN
21h 00m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
19h 35m
1 stop
$940Singapore Airlines
Mon, Mar 9 - Wed, Mar 18
STARLUX Airlines Logo
5:45 pm - 12:40 pm
PDX
-
SIN
27h 55m
2 stops
STARLUX Airlines Logo
2:00 pm - 9:38 pm
SIN
-
PDX
22h 38m
2 stops
$941STARLUX Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
3:52 pm - 1:00 pm
PDX
-
SIN
29h 08m
2 stops
Multiple Airlines Logo
12:05 am - 10:45 pm
SIN
-
PDX
37h 40m
2 stops
$950Multiple Airlines
Fri, Mar 6 - Wed, Mar 11
Multiple Airlines Logo
3:52 pm - 9:35 am
PDX
-
SIN
26h 43m
2 stops
Multiple Airlines Logo
11:45 pm - 9:10 pm
SIN
-
PDX
36h 25m
2 stops
$955Multiple Airlines
Sun, Mar 8 - Sun, Mar 15
Multiple Airlines Logo
7:27 pm - 12:40 pm
PDX
-
SIN
26h 13m
2 stops
Multiple Airlines Logo
2:00 pm - 9:38 pm
SIN
-
PDX
22h 38m
2 stops
$965Multiple Airlines
Mon, Apr 13 - Mon, Apr 20

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Feb 19
PDX8:30 amPortland
38h 25m
2 stops
SIN2:55 pmSingapore Changi
Feb 25
SIN3:15 amSingapore Changi
36h 29m
2 stops
PDX11:44 pmPortland
$1,019
Qatar Airways
Feb 23
PDX8:30 amPortland
38h 25m
2 stops
SIN2:55 pmSingapore Changi
Feb 26
SIN3:15 amSingapore Changi
36h 29m
2 stops
PDX11:44 pmPortland
$1,059
Qatar Airways
Feb 16
PDX6:00 amPortland
34h 45m
2 stops
SIN8:45 amSingapore Changi
Mar 1
SIN8:15 pmSingapore Changi
35h 33m
2 stops
PDX3:48 pmPortland
$1,096

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Feb 19
PDX5:35 amPortland
22h 40m
1 stop
SIN8:15 pmSingapore Changi
Feb 26
SIN10:10 amSingapore Changi
20h 44m
1 stop
PDX2:54 pmPortland
$1,026
United Airlines
Feb 19
PDX5:35 amPortland
22h 40m
1 stop
SIN8:15 pmSingapore Changi
Feb 26
SIN10:10 amSingapore Changi
29h 04m
2 stops
PDX11:14 pmPortland
$1,030
United Airlines
Feb 23
PDX1:18 pmPortland
26h 42m
2 stops
SIN8:00 amSingapore Changi
Mar 2
SIN10:10 amSingapore Changi
27h 05m
2 stops
PDX9:15 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 January 24, 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 4/14

7:05 am-7:10 pm

1 stop21h 05m

Singapore Changi

Tue 4/21

9:15 am-1:50 pm

1 stop19h 35m

$801

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/26

7:05 am-7:05 pm

1 stop21h 00m

Singapore Changi

Sat 4/18

9:00 am-9:38 pm

1 stop27h 38m

$870

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4/13

2:37 pm-7:50 am

1 stop26h 13m

Singapore Changi

Mon 4/20

9:15 am-8:32 pm

1 stop26h 17m

$888

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/21

7:27 pm-12:40 pm

2 stops26h 13m

Singapore Changi

Tue 5/12

2:00 pm-10:53 pm

2 stops23h 53m

$918

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/14

7:27 pm-12:40 pm

2 stops26h 13m

Singapore Changi

Tue 4/21

2:00 pm-9:38 pm

2 stops22h 38m

$922

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 3/9

7:05 am-7:05 pm

1 stop21h 00m

Singapore Changi

Wed 3/18

9:15 am-1:50 pm

1 stop19h 35m

$940

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/14

5:45 pm-12:40 pm

2 stops27h 55m

Singapore Changi

Tue 4/21

2:00 pm-9:38 pm

2 stops22h 38m

$941

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 3/6

3:52 pm-1:00 pm

2 stops29h 08m

Singapore Changi

Wed 3/11

12:05 am-10:45 pm

2 stops37h 40m

$950

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 3/8

3:52 pm-9:35 am

2 stops26h 43m

Singapore Changi

Sun 3/15

11:45 pm-9:10 pm

2 stops36h 25m

$955

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4/13

7:27 pm-12:40 pm

2 stops26h 13m

Singapore Changi

Mon 4/20

2:00 pm-9:38 pm

2 stops22h 38m

$965

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 $853.

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 $997 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 $798 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

20h 20m

Direct flights

None
The fastest flight from Portland to Singapore takes 20h 20m
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
10,652 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $789Free CancellationRating
8.1
1,436 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,112 reviews
Search Delta flights
United AirlinesPriceFrom $869Free CancellationRating
7.4
9,193 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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