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Cheap flights from Portland to Singapore from $436

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 4/17. 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
2:48 pm - 5:15 am
PDX
-
SIN
23h 27m
1 stop
Singapore Airlines Logo
9:00 am - 9:34 pm
SIN
-
PDX
27h 34m
1 stop
$815Singapore Airlines
Wed, May 20 - Tue, May 26
Singapore Airlines Logo
9:48 pm - 7:05 pm
PDX
-
SIN
29h 17m
1 stop
Singapore Airlines Logo
9:15 am - 1:47 pm
SIN
-
PDX
19h 32m
1 stop
$832Singapore Airlines
Mon, Mar 2 - Wed, Apr 22
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
$857Singapore Airlines
Thu, Mar 26 - Sat, Apr 18
Singapore Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
9:15 am - 4:22 pm
SIN
-
PDX
22h 07m
1 stop
$874Singapore Airlines
Sun, Apr 26 - Sat, May 2
Singapore Airlines Logo
7:05 am - 7:05 pm
PDX
-
SIN
21h 00m
1 stop
Singapore Airlines Logo
8:45 pm - 9:35 am
SIN
-
PDX
27h 50m
1 stop
$913Singapore Airlines
Thu, Mar 26 - Mon, Apr 6
Singapore Airlines Logo
7:00 am - 7:10 pm
PDX
-
SIN
21h 10m
1 stop
Singapore Airlines Logo
9:00 am - 12:52 pm
SIN
-
PDX
18h 52m
1 stop
$930Singapore Airlines
Sat, May 2 - Thu, May 7
STARLUX Airlines Logo
5:30 pm - 12:40 pm
PDX
-
SIN
28h 10m
2 stops
STARLUX Airlines Logo
2:00 pm - 10:53 pm
SIN
-
PDX
23h 53m
2 stops
$936STARLUX Airlines
Sat, May 2 - Thu, May 7
STARLUX Airlines Logo
3:52 pm - 1:25 pm
PDX
-
SIN
29h 33m
2 stops
STARLUX Airlines Logo
2:00 pm - 10:53 pm
SIN
-
PDX
23h 53m
2 stops
$955STARLUX Airlines
Mon, Mar 2 - Wed, Apr 22
STARLUX Airlines Logo
3:52 pm - 1:25 pm
PDX
-
SIN
29h 33m
2 stops
STARLUX Airlines Logo
2:00 pm - 10:53 pm
SIN
-
PDX
23h 53m
2 stops
$978STARLUX Airlines
Sun, Mar 1 - Wed, Apr 22
STARLUX Airlines Logo
3:52 pm - 1:25 pm
PDX
-
SIN
29h 33m
2 stops
STARLUX Airlines Logo
2:45 pm - 10:41 pm
SIN
-
PDX
22h 56m
2 stops
$979STARLUX Airlines
Sat, Mar 7 - Tue, Mar 17

Singapore Airlines flights from Portland to Singapore

Our best Singapore Airlines deals on Portland to Singapore flight tickets
Singapore Airlines
May 20
PDX2:48 pmPortland
23h 27m
1 stop
SIN5:15 amSingapore Changi
May 26
SIN9:00 amSingapore Changi
27h 34m
1 stop
PDX9:34 pmPortland
$815
Singapore Airlines
Mar 2
PDX9:48 pmPortland
29h 17m
1 stop
SIN7:05 pmSingapore Changi
Apr 22
SIN9:15 amSingapore Changi
19h 32m
1 stop
PDX1:47 pmPortland
$832
Singapore Airlines
Mar 26
PDX7:05 amPortland
21h 00m
1 stop
SIN7:05 pmSingapore Changi
Apr 18
SIN9:00 amSingapore Changi
27h 38m
1 stop
PDX9:38 pmPortland
$857

United Airlines flights from Portland to Singapore

Our best United Airlines deals on Portland to Singapore flight tickets
United Airlines
Mar 5
PDX1:30 pmPortland
26h 30m
1 stop
SIN8:00 amSingapore Changi
Apr 23
SIN9:00 amSingapore Changi
18h 26m
1 stop
PDX12:26 pmPortland
$1,026
United Airlines
Jan 29
PDX7:45 amPortland
20h 30m
1 stop
SIN8:15 pmSingapore Changi
Feb 5
SIN10:10 amSingapore Changi
20h 36m
1 stop
PDX2:46 pmPortland
$1,028
United Airlines
Mar 5
PDX7:30 amPortland
20h 45m
1 stop
SIN8:15 pmSingapore Changi
Mar 16
SIN10:10 amSingapore Changi
42h 34m
2 stops
PDX1:44 pmPortland
$1,030

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 20, 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

Wed 5/20

2:48 pm-5:15 am

1 stop23h 27m

Singapore Changi

Tue 5/26

9:00 am-9:34 pm

1 stop27h 34m

$815

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 3/2

9:48 pm-7:05 pm

1 stop29h 17m

Singapore Changi

Wed 4/22

9:15 am-1:47 pm

1 stop19h 32m

$832

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

$857

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 4/26

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Sat 5/2

9:15 am-4:22 pm

1 stop22h 07m

$874

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 3/26

7:05 am-7:05 pm

1 stop21h 00m

Singapore Changi

Mon 4/6

8:45 pm-9:35 am

1 stop27h 50m

$913

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 5/2

7:00 am-7:10 pm

1 stop21h 10m

Singapore Changi

Thu 5/7

9:00 am-12:52 pm

1 stop18h 52m

$930

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 5/2

5:30 pm-12:40 pm

2 stops28h 10m

Singapore Changi

Thu 5/7

2:00 pm-10:53 pm

2 stops23h 53m

$936

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 3/2

3:52 pm-1:25 pm

2 stops29h 33m

Singapore Changi

Wed 4/22

2:00 pm-10:53 pm

2 stops23h 53m

$955

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 3/1

3:52 pm-1:25 pm

2 stops29h 33m

Singapore Changi

Wed 4/22

2:00 pm-10:53 pm

2 stops23h 53m

$978

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 3/7

3:52 pm-1:25 pm

2 stops29h 33m

Singapore Changi

Tue 3/17

2:45 pm-10:41 pm

2 stops22h 56m

$979

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

21h 05m

Direct flights

None
The fastest flight from Portland to Singapore takes 21h 05m
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
10,637 reviews
Search Air Canada flights
Singapore AirlinesPriceFrom $789Free CancellationRating
8.1
1,433 reviews
Search Singapore Airlines flights
Korean AirPriceFrom $792Free CancellationRating
8.4
1,187 reviews
Search Korean Air flights
DeltaPriceFrom $800Free CancellationRating
7.9
8,080 reviews
Search Delta flights
United AirlinesPriceFrom $869Free CancellationRating
7.4
9,183 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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