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Cheap flights from Portland to Singapore from $455

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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Air Canada Logo
7:05 pm - 7:00 am
PDX
-
SIN
20h 55m1 stop
Air Canada Logo
10:50 pm - 2:40 pm
SIN
-
PDX
30h 50m2 stops
$802Air Canada
Thu, Mar 19 - Mon, Apr 20
Air Canada Logo
7:45 pm - 11:15 am
PDX
-
SIN
24h 30m2 stops
Air Canada Logo
7:00 am - 7:05 pm
SIN
-
PDX
27h 05m1 stop
$806Air Canada
Mon, May 11 - Thu, May 28
Air Canada Logo
7:05 pm - 7:00 am
PDX
-
SIN
20h 55m1 stop
Air Canada Logo
11:55 pm - 2:40 pm
SIN
-
PDX
29h 45m2 stops
$808Air Canada
Thu, Mar 19 - Mon, Apr 20
Air Canada Logo
3:15 pm - 7:00 am
PDX
-
SIN
23h 45m1 stop
Air Canada Logo
8:50 am - 9:15 am
SIN
-
PDX
16h 25m1 stop
$822Air Canada
Thu, Jan 29 - Thu, Feb 5
Air Canada Logo
3:15 pm - 11:15 am
PDX
-
SIN
28h 00m2 stops
Air Canada Logo
8:50 am - 9:15 am
SIN
-
PDX
16h 25m1 stop
$824Air Canada
Thu, Jan 29 - Thu, Feb 5
Air Canada Logo
3:25 pm - 11:15 am
PDX
-
SIN
28h 50m2 stops
Air Canada Logo
8:50 pm - 2:45 pm
SIN
-
PDX
32h 55m2 stops
$828Air Canada
Mon, May 11 - Thu, May 28
Air Canada Logo
7:00 pm - 7:00 am
PDX
-
SIN
20h 00m1 stop
Air Canada Logo
8:30 am - 6:30 pm
SIN
-
PDX
26h 00m2 stops
$829Air Canada
Wed, Jan 28 - Wed, Feb 4
Singapore Airlines Logo
2:57 pm - 7:55 am
PDX
-
SIN
24h 58m1 stop
Singapore Airlines Logo
9:15 am - 1:30 pm
SIN
-
PDX
20h 15m1 stop
$830Singapore Airlines
Wed, Jan 28 - Wed, Feb 4
Air Canada Logo
7:00 pm - 11:15 am
PDX
-
SIN
24h 15m2 stops
Air Canada Logo
11:10 pm - 2:40 pm
SIN
-
PDX
31h 30m2 stops
$831Air Canada
Wed, Jan 28 - Wed, Feb 4
Singapore Airlines Logo
6:00 am - 5:45 pm
PDX
-
SIN
20h 45m1 stop
Singapore Airlines Logo
9:00 am - 12:21 pm
SIN
-
PDX
18h 21m1 stop
$838Singapore Airlines
Fri, Mar 13 - Sat, Mar 21

China Eastern flights from Portland to Singapore

Our best China Eastern deals on Portland to Singapore flight tickets
China Eastern
Mar 25
PDX6:15 amPortland
32h 10m
2 stops
SIN5:25 amSingapore Changi
Apr 3
SIN12:55 amSingapore Changi
30h 48m
2 stops
PDX4:43 pmPortland
$1,001
Find similar
China Eastern
Mar 13
PDX6:15 amPortland
32h 10m
2 stops
SIN5:25 amSingapore Changi
Mar 20
SIN12:25 amSingapore Changi
31h 18m
2 stops
PDX4:43 pmPortland
$1,070
Find similar

Air Canada flights from Portland to Singapore

Our best Air Canada deals on Portland to Singapore flight tickets
Air Canada
Mar 19
PDX7:05 pmPortland
20h 55m
1 stop
SIN7:00 amSingapore Changi
Apr 20
SIN10:50 pmSingapore Changi
30h 50m
2 stops
PDX2:40 pmPortland
$802
Find similar
Air Canada
May 11
PDX7:45 pmPortland
24h 30m
2 stops
SIN11:15 amSingapore Changi
May 28
SIN7:00 amSingapore Changi
27h 05m
1 stop
PDX7:05 pmPortland
$806
Find similar
Air Canada
Mar 19
PDX7:05 pmPortland
20h 55m
1 stop
SIN7:00 amSingapore Changi
Apr 20
SIN11:55 pmSingapore Changi
29h 45m
2 stops
PDX2:40 pmPortland
$808
Find similar

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 December 16, 2025.
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

Thu 3/19

7:05 pm-7:00 am

1 stop20h 55m

Singapore Changi

Mon 4/20

10:50 pm-2:40 pm

2 stops30h 50m

$802

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 5/11

7:45 pm-11:15 am

2 stops24h 30m

Singapore Changi

Thu 5/28

7:00 am-7:05 pm

1 stop27h 05m

$806

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/19

7:05 pm-7:00 am

1 stop20h 55m

Singapore Changi

Mon 4/20

11:55 pm-2:40 pm

2 stops29h 45m

$808

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 1/29

3:15 pm-7:00 am

1 stop23h 45m

Singapore Changi

Thu 2/5

8:50 am-9:15 am

1 stop16h 25m

$822

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 1/29

3:15 pm-11:15 am

2 stops28h 00m

Singapore Changi

Thu 2/5

8:50 am-9:15 am

1 stop16h 25m

$824

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 5/11

3:25 pm-11:15 am

2 stops28h 50m

Singapore Changi

Thu 5/28

8:50 pm-2:45 pm

2 stops32h 55m

$828

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/28

7:00 pm-7:00 am

1 stop20h 00m

Singapore Changi

Wed 2/4

8:30 am-6:30 pm

2 stops26h 00m

$829

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/28

2:57 pm-7:55 am

1 stop24h 58m

Singapore Changi

Wed 2/4

9:15 am-1:30 pm

1 stop20h 15m

$830

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/28

7:00 pm-11:15 am

2 stops24h 15m

Singapore Changi

Wed 2/4

11:10 pm-2:40 pm

2 stops31h 30m

$831

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 3/13

6:00 am-5:45 pm

1 stop20h 45m

Singapore Changi

Sat 3/21

9:00 am-12:21 pm

1 stop18h 21m

$838

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 $749. 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 $875.

What is the cheapest day to depart on your flight to Singapore?

The cheapest day to depart from Portland to Singapore is on a Tuesday when prices can be found for as low as $1,256. The most expensive day to fly to Singapore is Saturday, with ticket prices averaging around $1,673.

What is the cheapest time of day to depart on your flight to Singapore?

At noon is the cheapest time of day to fly from Portland to Singapore when you can find flight prices for as low as $1,121. Flying to Singapore at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,334 on average. Flights to Singapore from Portland in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $994 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 1% 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 45m

Direct flights

None
The fastest flight from Portland to Singapore takes 20h 45m
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
10,531 reviews
Search Air Canada flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,186 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,010 reviews
Search Delta flights
Singapore AirlinesPriceFrom $837Free CancellationRating
8.1
1,413 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $868Free CancellationRating
7.4
9,094 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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