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Cheap flights from Portland to Singapore from S$ 637

PDX — SIN
17 Nov — 24 Nov1
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

Mon 9-1114:10 -
2 stops28h 15m
Mon 23-1110:30 -
2 stops22h 53m
Deal found 15-10S$ 1,321
Thu 26-1110:00 -
1 stop29h 00m
Thu 10-1208:40 -
1 stop28h 06m
Deal found 14-10S$ 1,326
Wed 25-1108:22 -
2 stops28h 38m
Wed 9-1223:10 -
2 stops32h 11m
Deal found 17-10S$ 1,356
Sat 7-1107:04 -
2 stops27h 21m
Thu 12-1100:25 -
2 stops38h 53m
Deal found 13-10S$ 1,368
Sat 7-1107:04 -
2 stops39h 56m
Fri 13-1100:25 -
2 stops38h 53m
Deal found 13-10S$ 1,381
Wed 2-1208:30 -
2 stops23h 10m
Wed 9-1223:10 -
2 stops32h 11m
Deal found 18-10S$ 1,394
Sun 29-1115:15 -
2 stops41h 30m
Tue 22-1208:40 -
1 stop22h 01m
Deal found 17-10S$ 1,428
Tue 3-1117:04 -
2 stops27h 56m
Tue 17-1114:05 -
2 stops22h 32m
Deal found 16-10S$ 1,439

Find flight deals from Portland to Singapore

Round-trip from

S$ 1,321

One-way from

S$ 637

Popular in

June

Cheapest in

April

Average price

S$ 1,370
Alaska Airlines
  • Alaska Airlines
  • 9-11-23-11
  • 4 total stops
  • 51h 08m total
  • Portland to Singapore
Search Deals
15-11-31-12
  • 15-11-31-12
  • 2 total stops
  • 47h 11m total
  • Portland to Singapore
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (S$ 156 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (S$ 28 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 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

Sun 15-11

21:59-13:10

2 stops47h 11m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 637

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 26-11

13:52-19:05

2 stops37h 13m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 650

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Fri 13-11

11:06-21:55

2 stops42h 49m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 691

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sat 5-12

14:32-00:15

3 stops41h 43m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 719

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 12-11

07:04-08:20

3 stops33h 16m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 744

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Wed 18-11

14:38-06:50

3 stops48h 12m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 760

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Mon 16-11

15:40-08:00

1 stop24h 20m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 899
Fastest return journey

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Sun 1-11

07:10-20:15

1 stop21h 05m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 899

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 10-12

07:00-00:50

2 stops25h 50m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 903

PortlandSingapore

PDX Portland - SIN Singapore Changi

PDXSIN

Portland

Thu 10-12

10:56-20:40

3 stops41h 44m

Singapore Changi

Wed 31-12

00:00-08:30

Nonstop0h 00m

S$ 1,107

Flights are sorted by cheapest return flights first.

Deals found on 13-10

Showing 1-10 of 17 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$ 1,274). Flying from Portland to Singapore in June is currently the most expensive (average of S$ 1,656). 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$ 1,340 and S$ 1,746 in November.
The cheapest return price found within the last 5 days was S$ 1,321 on Multiple Airlines (9 Nov–23 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 32h 45m. Fly via Korean Air to get the fastest option. The distance between Portland and Singapore is about 13073 km.

  • 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$ 1,274). Flying from Portland to Singapore in June is currently the most expensive (average of S$ 1,656). 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

Eugene to Singapore flights

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