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Cheap flights from Portland to Singapore from S$ 554

PDX — SIN
15 Oct — 22 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portland to Singapore

Enter your travel dates to find the best prices.

Cheapest flights from Portland to Singapore

Tue 3-1115:20 -
1 stop23h 40m
Tue 17-1108:40 -
1 stop16h 46m
Deal found 15-9S$ 1,137
Thu 24-915:30 -
1 stop22h 45m
Thu 8-1007:00 -
1 stop22h 46m
Deal found 11-9S$ 1,144
Sun 27-919:45 -
1 stop18h 30m
Thu 1-1007:00 -
1 stop17h 31m
Deal found 14-9S$ 1,184
Thu 22-1015:30 -
1 stop22h 45m
Thu 29-1008:40 -
1 stop21h 01m
Deal found 10-9S$ 1,208
Sun 29-1119:10 -
1 stop19h 50m
Fri 11-1208:40 -
2 stops32h 03m
Deal found 13-9S$ 1,228
Sat 7-1123:30 -
2 stops39h 30m
Fri 13-1108:40 -
1 stop25h 51m
Deal found 14-9S$ 1,237

Find flight deals from Portland to Singapore

Round-trip from

S$ 1,137

One-way from

S$ 554

Popular in

December

Cheapest in

April

Average price

S$ 1,328
Air Canada
  • Air Canada
  • 3-11-17-11
  • 2 total stops
  • 40h 26m total
  • Portland to Singapore
Search Deals
20-9-31-12
  • 20-9-31-12
  • 2 total stops
  • 34h 27m total
  • Portland to Singapore
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (S$ 90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (S$ 42 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
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

Cheapest return flight

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 1-12

16:35-19:05

2 stops34h 30m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 641

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 22-10

11:03-15:45

2 stops37h 42m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 665

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 10-1

06:25-08:45

2 stops34h 20m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 705

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Tue 22-9

20:18-10:15

3 stops46h 57m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 728

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Fri 23-10

14:30-10:15

3 stops52h 45m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 729

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 30-11

05:30-20:25

2 stops46h 55m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 748

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Fri 15-1

07:30-08:45

2 stops33h 15m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 756

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 6-12

17:59-20:25

2 stops58h 26m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 762

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 29-11

14:15-05:00

2 stops46h 45m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 762
Fastest return journey

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Wed 21-10

10:48-10:15

3 stops32h 27m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 764

Flights are sorted by cheapest return flights first.

Deals found on 12-9

Showing 1-10 of 21 resultsSorted by cheapest first
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Best time to book a flight from Portland to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Portland with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Portland to Singapore

How far ahead should I book a flight from Portland to Singapore?

To ensure you get the cheapest price possible for a flight from Portland to Singapore, you should look to book at least 89 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Portland to Singapore?

Currently, April is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 1,265). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,793). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

How much does it cost for a return flight from Portland to Singapore?

Airfare is below average for this route at the moment.

Portland to Singapore flights typically cost between S$ 1,208 and S$ 1,356 in November.
The cheapest return price found within the last 5 days was S$ 1,137 on Air Canada (3 Nov–17 Nov).

Related info for your journey

  • How long is the flight from Portland to Singapore?

    There are many flights that can get you from Portland to Singapore in 26h 12m. Fly via Qatar Airways, Korean Air, or United Airlines to get the fastest option. The distance between Portland and Singapore is about 13073 km. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Portland to Singapore that include hotel bookings?

    Yes. In addition to deals on Portland to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portland to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Singapore.

  • Can I find deals for business class flights from Portland to Singapore?

    Yes. Cheapflights offers flight deals from Portland to Singapore by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland to Singapore?

    Currently, April is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 1,265). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,793). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Portland to Singapore

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