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Cheap flights from Portland to Singapore from $389

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 1/22. 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

Air Canada Logo
3:15 pm - 7:00 amPDX-SIN
24h 45m1 stop
Air Canada Logo
8:50 am - 9:15 amSIN-PDX
16h 25m1 stop
$718Air Canada
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Thu, Oct 30 - Tue, Nov 11
Air Canada Logo
9:50 am - 7:00 amPDX-SIN
29h 10m1 stop
Air Canada Logo
9:00 pm - 2:45 pmSIN-PDX
33h 45m2 stops
$720Air Canada
Find Deal
Wed, Feb 11 - Wed, Feb 18
Delta Logo
9:10 am - 12:10 amPDX-SIN
23h 00m2 stops
Delta Logo
1:30 am - 7:11 pmSIN-PDX
33h 41m2 stops
$841Delta
Find Deal
Mon, Jan 12 - Wed, Jan 14
Korean Air Logo
9:17 am - 11:40 pmPDX-SIN
23h 23m2 stops
Korean Air Logo
1:10 am - 2:52 pmSIN-PDX
28h 42m2 stops
$846Korean Air
Find Deal
Tue, Sep 16 - Mon, Sep 29
Korean Air Logo
5:10 pm - 12:10 amPDX-SIN
39h 00m2 stops
Korean Air Logo
10:30 pm - 8:44 pmSIN-PDX
38h 14m2 stops
$853Korean Air
Find Deal
Mon, Jan 12 - Tue, Jan 20
Singapore Airlines Logo
9:30 pm - 5:45 pmPDX-SIN
28h 15m1 stop
Singapore Airlines Logo
9:00 am - 10:55 amSIN-PDX
17h 55m1 stop
$857Singapore Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 31
Delta Logo
9:10 am - 12:10 amPDX-SIN
23h 00m2 stops
Delta Logo
1:30 am - 4:29 pmSIN-PDX
30h 59m2 stops
$866Delta
Find Deal
Sat, Jan 10 - Mon, Jan 19
Singapore Airlines Logo
10:35 am - 5:30 amPDX-SIN
26h 55m1 stop
Singapore Airlines Logo
9:00 am - 10:55 amSIN-PDX
17h 55m1 stop
$874Singapore Airlines
Find Deal
Fri, Jan 16 - Sat, Jan 31
United Airlines Logo
3:44 pm - 6:15 amPDX-SIN
23h 31m1 stop
United Airlines Logo
8:45 am - 6:33 pmSIN-PDX
24h 48m1 stop
$878United Airlines
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Tue, Sep 23 - Tue, Oct 7
United Airlines Logo
5:30 am - 6:25 pmPDX-SIN
21h 55m1 stop
United Airlines Logo
8:45 am - 10:46 pmSIN-PDX
29h 01m2 stops
$1,029United Airlines
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Thu, Sep 25 - Thu, Oct 2

Korean Air flights from Portland to Singapore

Our best Korean Air deals on Portland to Singapore flight tickets
Korean Air
Sep 16
PDX9:17 amPortland
23h 23m
2 stops
SIN11:40 pmSingapore Changi
Sep 29
SIN1:10 amSingapore Changi
28h 42m
2 stops
PDX2:52 pmPortland
$846
Find similar
Korean Air
Jan 12
PDX5:10 pmPortland
39h 00m
2 stops
SIN12:10 amSingapore Changi
Jan 20
SIN10:30 pmSingapore Changi
38h 14m
2 stops
PDX8:44 pmPortland
$853
Find similar
Korean Air
Jan 16
PDX7:10 amPortland
25h 00m
2 stops
SIN12:10 amSingapore Changi
Jan 30
SIN1:35 amSingapore Changi
27h 39m
2 stops
PDX1:14 pmPortland
$897
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Malaysia Airlines flights from Portland to Singapore

Our best Malaysia Airlines deals on Portland to Singapore flight tickets
Malaysia Airlines
Sep 4
PDX7:25 pmPortland
34h 00m
2 stops
SIN8:25 pmSingapore Changi
Sep 24
SIN12:55 amSingapore Changi
31h 40m
1 stop
PDX5:35 pmPortland
$5,198
Find similar
Malaysia Airlines
Sep 4
PDX7:25 pmPortland
34h 00m
2 stops
SIN8:25 pmSingapore Changi
Sep 24
SIN12:55 amSingapore Changi
31h 40m
1 stop
PDX5:35 pmPortland
$5,282
Find similar
Malaysia Airlines
Sep 4
PDX7:25 pmPortland
30h 20m
1 stop
SIN4:45 pmSingapore Changi
Sep 24
SIN12:55 amSingapore Changi
31h 40m
1 stop
PDX5:35 pmPortland
$7,733
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 August 26, 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 10/30

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Tue 11/11

8:50 am-9:15 am

1 stop16h 25m

$718

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2/11

9:50 am-7:00 am

1 stop29h 10m

Singapore Changi

Wed 2/18

9:00 pm-2:45 pm

2 stops33h 45m

$720

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 1/12

9:10 am-12:10 am

2 stops23h 00m

Singapore Changi

Wed 1/14

1:30 am-7:11 pm

2 stops33h 41m

$841

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/16

9:17 am-11:40 pm

2 stops23h 23m

Singapore Changi

Mon 9/29

1:10 am-2:52 pm

2 stops28h 42m

$846

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 1/12

5:10 pm-12:10 am

2 stops39h 00m

Singapore Changi

Tue 1/20

10:30 pm-8:44 pm

2 stops38h 14m

$853

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 1/17

9:30 pm-5:45 pm

1 stop28h 15m

Singapore Changi

Sat 1/31

9:00 am-10:55 am

1 stop17h 55m

$857

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 1/10

9:10 am-12:10 am

2 stops23h 00m

Singapore Changi

Mon 1/19

1:30 am-4:29 pm

2 stops30h 59m

$866

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 1/16

10:35 am-5:30 am

1 stop26h 55m

Singapore Changi

Sat 1/31

9:00 am-10:55 am

1 stop17h 55m

$874

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/23

3:44 pm-6:15 am

1 stop23h 31m

Singapore Changi

Tue 10/7

8:45 am-6:33 pm

1 stop24h 48m

$878

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 9/25

5:30 am-6:25 pm

1 stop21h 55m

Singapore Changi

Thu 10/2

8:45 am-10:46 pm

2 stops29h 01m

$1,029

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 November is also cheap. Prices for this month can be found on momondo for an average of $877.

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 $1,042 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 $774 on momondo.

Can stopping save me money on Portland to Singapore flights?

You could potentially save up to 15% 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

Direct flights

None
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
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $796Free CancellationRating
7.4
8,943 reviews
Search United Airlines flights
DeltaPriceFrom $800Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Korean AirPriceFrom $808Free CancellationRating
8.4
1,133 reviews
Search Korean Air flights
Singapore AirlinesPriceFrom $903Free CancellationRating
8.1
1,352 reviews
Search Singapore 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.

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