Latest deals
Insights
FAQs
Reviews
Price Alerts

Cheap flights from Portland to Singapore from $330

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 8/5. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Portland to Singapore

Cheap round-trip flights

Enter your travel dates to find the best prices.
Singapore Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
9:15 am - 10:13 pm
SIN
-
PDX
27h 58m
1 stop
$800Singapore Airlines
ons., apr. 22 - man., apr. 27
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
$837Cathay Pacific
tir., apr. 14 - tir., apr. 21
Singapore Airlines Logo
5:49 pm - 7:50 am
PDX
-
SIN
23h 01m
1 stop
Singapore Airlines Logo
9:15 am - 1:47 pm
SIN
-
PDX
19h 32m
1 stop
$843Singapore Airlines
tir., apr. 21 - tir., apr. 28
Singapore Airlines Logo
5:49 pm - 7:50 am
PDX
-
SIN
23h 01m
1 stop
Singapore Airlines Logo
9:00 am - 9:34 pm
SIN
-
PDX
27h 34m
1 stop
$869Singapore Airlines
fre., maj 1 - lør., maj 16
Air Canada Logo
3:15 pm - 11:15 am
PDX
-
SIN
29h 00m
2 stops
Air Canada Logo
10:50 pm - 6:30 pm
SIN
-
PDX
34h 40m
2 stops
$873Air Canada
tor., mar. 19 - man., apr. 20
Cathay Pacific Logo
7:16 am - 12:25 am
PDX
-
SIN
26h 09m
2 stops
Cathay Pacific Logo
10:00 am - 9:50 am
SIN
-
PDX
38h 50m
2 stops
$876Cathay Pacific
tir., mar. 10 - tir., mar. 17
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
$881Singapore Airlines
tir., apr. 14 - tir., apr. 21
Cathay Pacific Logo
7:16 am - 12:25 am
PDX
-
SIN
26h 09m
2 stops
Cathay Pacific Logo
6:00 pm - 9:50 am
SIN
-
PDX
30h 50m
2 stops
$883Cathay Pacific
tir., mar. 10 - tir., mar. 17
Air Canada Logo
9:50 am - 5:15 am
PDX
-
SIN
28h 25m
1 stop
Air Canada Logo
7:00 am - 7:05 pm
SIN
-
PDX
27h 05m
1 stop
$888Air Canada
tor., apr. 23 - søn., maj 3
Singapore Airlines Logo
7:14 am - 12:55 am
PDX
-
SIN
26h 41m
2 stops
Singapore Airlines Logo
9:15 am - 4:22 pm
SIN
-
PDX
22h 07m
1 stop
$895Singapore Airlines
tir., apr. 21 - tir., apr. 28

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
Mar 19
PDX3:15 pmPortland
29h 00m
2 stops
SIN11:15 amSingapore Changi
Apr 20
SIN10:50 pmSingapore Changi
34h 40m
2 stops
PDX6:30 pmPortland
$873
Air Canada
Apr 23
PDX9:50 amPortland
28h 25m
1 stop
SIN5:15 amSingapore Changi
May 3
SIN7:00 amSingapore Changi
27h 05m
1 stop
PDX7:05 pmPortland
$888
Air Canada
Apr 23
PDX7:05 pmPortland
26h 50m
2 stops
SIN12:55 pmSingapore Changi
May 3
SIN7:00 amSingapore Changi
22h 45m
1 stop
PDX2:45 pmPortland
$923

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Feb 15
PDX3:50 pmPortland
24h 10m
1 stop
SIN8:00 amSingapore Changi
Feb 26
SIN10:20 pmSingapore Changi
18h 14m
1 stop
PDX12:34 amPortland
$1,054
United Airlines
Mar 4
PDX5:35 amPortland
22h 40m
1 stop
SIN8:15 pmSingapore Changi
Mar 6
SIN10:10 amSingapore Changi
24h 37m
1 stop
PDX6:47 pmPortland
$1,055
United Airlines
Feb 15
PDX1:18 pmPortland
26h 42m
2 stops
SIN8:00 amSingapore Changi
Feb 27
SIN10:10 amSingapore Changi
20h 38m
1 stop
PDX2:48 pmPortland
$1,059

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 februar 11, 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

ons. 4/22

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

man. 4/27

9:15 am-10:13 pm

1 stop27h 58m

$800

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 4/14

7:14 am-12:45 am

2 stops26h 31m

Singapore Changi

tir. 4/21

7:20 am-4:30 pm

2 stops24h 10m

$837

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 4/21

5:49 pm-7:50 am

1 stop23h 01m

Singapore Changi

tir. 4/28

9:15 am-1:47 pm

1 stop19h 32m

$843

PortlandSingapore

PDX - SIN

PDXSIN

Portland

fre. 5/1

5:49 pm-7:50 am

1 stop23h 01m

Singapore Changi

lør. 5/16

9:00 am-9:34 pm

1 stop27h 34m

$869

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tor. 3/19

3:15 pm-11:15 am

2 stops29h 00m

Singapore Changi

man. 4/20

10:50 pm-6:30 pm

2 stops34h 40m

$873

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 3/10

7:16 am-12:25 am

2 stops26h 09m

Singapore Changi

tir. 3/17

10:00 am-9:50 am

2 stops38h 50m

$876

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 4/14

2:37 pm-7:50 am

1 stop26h 13m

Singapore Changi

tir. 4/21

9:15 am-8:32 pm

1 stop26h 17m

$881

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 3/10

7:16 am-12:25 am

2 stops26h 09m

Singapore Changi

tir. 3/17

6:00 pm-9:50 am

2 stops30h 50m

$883

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tor. 4/23

9:50 am-5:15 am

1 stop28h 25m

Singapore Changi

søn. 5/3

7:00 am-7:05 pm

1 stop27h 05m

$888

PortlandSingapore

PDX - SIN

PDXSIN

Portland

tir. 4/21

7:14 am-12:55 am

2 stops26h 41m

Singapore Changi

tir. 4/28

9:15 am-4:22 pm

1 stop22h 07m

$895

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 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 $1,011 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

20h 31m

Direct flights

None
The fastest flight from Portland to Singapore takes 20h 31m
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
10,707 reviews
Search Air Canada flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,191 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,175 reviews
Search Delta flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.2
1,452 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $870Free CancellationRating
7.4
9,274 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
fre. 3/13
fre. 3/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Singapore

Popular cities in Singapore

Popular flights according to clicks in the last 7 days on momondo
Flights to Singaporefrom $501