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Cheap flights from Portland to Singapore from $347

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 3/1. 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.
Cathay Pacific Logo
7:14 am - 12:45 am
PDX
-
SIN
26h 31m
2 stops
Cathay Pacific Logo
7:20 am - 4:30 pm
SIN
-
PDX
24h 10m
2 stops
$860Cathay Pacific
Tue, Apr 14 - Tue, Apr 21
Cathay Pacific Logo
7:11 am - 12:45 am
PDX
-
SIN
26h 34m
2 stops
Cathay Pacific Logo
7:20 am - 4:49 pm
SIN
-
PDX
24h 29m
2 stops
$863Cathay Pacific
Wed, May 6 - Wed, May 13
Multiple Airlines Logo
7:05 am - 7:10 pm
PDX
-
SIN
21h 05m
1 stop
Multiple Airlines Logo
9:00 am - 9:38 pm
SIN
-
PDX
27h 38m
1 stop
$882Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Singapore Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
9:15 am - 1:50 pm
SIN
-
PDX
19h 35m
1 stop
$884Singapore Airlines
Wed, May 6 - Wed, May 13
Multiple Airlines Logo
3:52 pm - 9:35 am
PDX
-
SIN
25h 43m
2 stops
Multiple Airlines Logo
12:05 am - 10:45 pm
SIN
-
PDX
37h 40m
2 stops
$909Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Cathay Pacific Logo
5:49 pm - 12:25 pm
PDX
-
SIN
27h 36m
2 stops
Cathay Pacific Logo
7:20 am - 4:30 pm
SIN
-
PDX
24h 10m
2 stops
$913Cathay Pacific
Thu, Apr 9 - Wed, Apr 15
Cathay Pacific Logo
6:25 am - 12:25 am
PDX
-
SIN
26h 00m
2 stops
Cathay Pacific Logo
7:40 am - 5:08 pm
SIN
-
PDX
24h 28m
2 stops
$915Cathay Pacific
Mon, Mar 2 - Tue, Mar 17
Cathay Pacific Logo
7:05 am - 12:25 am
PDX
-
SIN
25h 20m
2 stops
Cathay Pacific Logo
8:15 pm - 5:13 pm
SIN
-
PDX
36h 58m
2 stops
$930Cathay Pacific
Mon, Feb 16 - Sun, Mar 1
Multiple Airlines Logo
9:53 am - 11:45 am
PDX
-
SIN
34h 52m
2 stops
Multiple Airlines Logo
9:15 am - 9:29 am
SIN
-
PDX
39h 14m
1 stop
$932Multiple Airlines
Thu, May 7 - Fri, May 15
Multiple Airlines Logo
9:53 am - 12:45 am
PDX
-
SIN
47h 52m
2 stops
Multiple Airlines Logo
9:15 am - 9:29 am
SIN
-
PDX
39h 14m
1 stop
$954Multiple Airlines
Sun, May 3 - Fri, May 15

Qatar Airways flights from Portland to Singapore

Our best Qatar Airways deals on Portland to Singapore flight tickets
Qatar Airways
Feb 16
PDX8:30 amPortland
38h 25m
2 stops
SIN2:55 pmSingapore Changi
Feb 26
SIN3:15 amSingapore Changi
35h 26m
2 stops
PDX10:41 pmPortland
$1,022
Qatar Airways
Feb 16
PDX8:30 amPortland
38h 25m
2 stops
SIN2:55 pmSingapore Changi
Feb 26
SIN8:15 pmSingapore Changi
42h 26m
2 stops
PDX10:41 pmPortland
$1,090

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Feb 16
PDX1:40 pmPortland
26h 20m
1 stop
SIN8:00 amSingapore Changi
Feb 25
SIN10:20 pmSingapore Changi
18h 14m
1 stop
PDX12:34 amPortland
$1,027
United Airlines
Feb 15
PDX4:00 pmPortland
36h 15m
2 stops
SIN8:15 pmSingapore Changi
Feb 26
SIN10:10 amSingapore Changi
24h 45m
1 stop
PDX6:55 pmPortland
$1,031
United Airlines
Feb 15
PDX7:57 pmPortland
32h 18m
1 stop
SIN8:15 pmSingapore Changi
Feb 26
SIN10:10 amSingapore Changi
18h 28m
1 stop
PDX12:38 pmPortland
$1,033

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 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

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/14

7:14 am-12:45 am

2 stops26h 31m

Singapore Changi

Tue 4/21

7:20 am-4:30 pm

2 stops24h 10m

$860

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 5/6

7:11 am-12:45 am

2 stops26h 34m

Singapore Changi

Wed 5/13

7:20 am-4:49 pm

2 stops24h 29m

$863

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/14

7:05 am-7:10 pm

1 stop21h 05m

Singapore Changi

Tue 4/21

9:00 am-9:38 pm

1 stop27h 38m

$882

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 5/6

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Wed 5/13

9:15 am-1:50 pm

1 stop19h 35m

$884

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 3/4

3:52 pm-9:35 am

2 stops25h 43m

Singapore Changi

Tue 3/10

12:05 am-10:45 pm

2 stops37h 40m

$909

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 4/9

5:49 pm-12:25 pm

2 stops27h 36m

Singapore Changi

Wed 4/15

7:20 am-4:30 pm

2 stops24h 10m

$913

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 3/2

6:25 am-12:25 am

2 stops26h 00m

Singapore Changi

Tue 3/17

7:40 am-5:08 pm

2 stops24h 28m

$915

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/16

7:05 am-12:25 am

2 stops25h 20m

Singapore Changi

Sun 3/1

8:15 pm-5:13 pm

2 stops36h 58m

$930

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 5/7

9:53 am-11:45 am

2 stops34h 52m

Singapore Changi

Fri 5/15

9:15 am-9:29 am

1 stop39h 14m

$932

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 5/3

9:53 am-12:45 am

2 stops47h 52m

Singapore Changi

Fri 5/15

9:15 am-9:29 am

1 stop39h 14m

$954

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 $870.

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 $1,000 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 55m

Direct flights

None
The fastest flight from Portland to Singapore takes 20h 55m
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
10,684 reviews
Search Air Canada flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,138 reviews
Search Delta flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,443 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $870Free CancellationRating
7.4
9,236 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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