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Cheap flights from Portland to Singapore from S$ 601

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15-5. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
23 Apr — 30 Apr1
1 adult

Cheapflights Tip: The best prices from Portland to Singapore Changi are usually found in February or September, booked 73 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Portland to Singapore

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 April 2025.

Round-trip from

S$ 928

One-way from

S$ 601

Popular in

December

Cheapest in

February

Average price

S$ 1,385
Air Canada
  • Air Canada
  • 4-9-25-9
  • 2 total stops
  • 49h 16m total
  • Portland to Singapore
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Korean Air
  • Korean Air
  • 15-5
  • 2 total stops
  • 23h 30m total
  • Portland to Singapore
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Highest demand for flights based on searches. 9% potential increase in price (S$ 195 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (S$ 63 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Find flight deals from Portland to Singapore

Cheapest flights from Portland to Singapore
Explore the most affordable flight options available from Portland to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 April 2025.

Thu 4-915:25PDX - SIN
1 stop24h 40mAir Canada
Thu 25-909:10SIN - PDX
1 stop24h 36mAir Canada
Deal found 18-4S$ 928
Tue 7-1019:40PDX - SIN
1 stop20h 25mMultiple Airlines
Mon 20-1002:15SIN - PDX
3 stops27h 31mMultiple Airlines
Deal found 17-4S$ 1,008
Fri 29-811:04PDX - SIN
2 stops26h 56mDelta
Mon 8-907:30SIN - PDX
2 stops24h 36mDelta
Deal found 17-4S$ 1,052
Sun 27-409:12PDX - SIN
2 stops28h 48mKorean Air
Wed 7-501:10SIN - PDX
2 stops28h 40mKorean Air
Deal found 18-4S$ 1,060
Thu 8-518:30PDX - SIN
1 stop21h 15mUnited Airlines
Sat 24-508:45SIN - PDX
1 stop18h 48mUnited Airlines
Deal found 17-4S$ 1,151
Sat 30-807:00PDX - SIN
1 stop21h 10mSingapore Airlines
Tue 9-909:15SIN - PDX
1 stop19h 35mSingapore Airlines
Deal found 17-4S$ 1,164
Wed 17-907:00PDX - SIN
2 stops32h 10mJapan Airlines
Mon 29-901:55SIN - PDX
2 stops34h 35mJapan Airlines
Deal found 18-4S$ 1,257
Tue 7-1007:30PDX - SIN
2 stops26h 15mANA
Mon 20-1006:15SIN - PDX
2 stops27h 17mANA
Deal found 17-4S$ 1,325
Fri 25-406:05PDX - SIN
2 stops32h 20mChina Eastern
Fri 9-500:55SIN - PDX
2 stops30h 13mChina Eastern
Deal found 17-4S$ 1,392
Fri 10-1010:40PDX - SIN
2 stops31h 20mQatar Airways
Wed 22-1003:10SIN - PDX
2 stops35h 43mQatar Airways
Deal found 17-4S$ 1,591
Sat 19-411:29PDX - SIN
2 stops46h 06mChina Airlines
Thu 1-502:00SIN - PDX
2 stops53h 19mChina Airlines
Deal found 18-4S$ 1,636

Cheapflights Fare Finder

Customise 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, Cheapflights users made 200,618 searches. Data last updated 18 April 2025.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.

Fly from

Portland

Fly to

Singapore

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 4-9

15:25-07:05

1 stop24h 40m

Singapore Changi

Thu 25-9

09:10-18:46

1 stop24h 36m

S$ 928

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 7-10

19:40-07:05

1 stop20h 25m

Singapore Changi

Mon 20-10

02:15-14:46

3 stops27h 31m

S$ 1,008

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 29-8

07:10-23:40

2 stops25h 30m

Singapore Changi

Sun 7-9

22:30-17:06

2 stops33h 36m

S$ 1,052

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 27-8

11:04-05:00

2 stops26h 56m

Singapore Changi

Sat 6-9

07:30-22:18

2 stops29h 48m

S$ 1,060

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 17-9

07:00-19:10

1 stop21h 10m

Singapore Changi

Tue 30-9

09:15-13:50

1 stop19h 35m

S$ 1,099

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 8-5

18:30-06:45

1 stop21h 15m

Singapore Changi

Sat 24-5

08:45-12:33

1 stop18h 48m

S$ 1,151

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 17-9

07:00-06:10

2 stops32h 10m

Singapore Changi

Mon 29-9

01:55-21:30

2 stops34h 35m

S$ 1,257

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 7-10

07:30-00:45

2 stops26h 15m

Singapore Changi

Mon 20-10

06:15-18:32

2 stops27h 17m

S$ 1,325

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 10-10

10:40-15:45

2 stops38h 05m

Singapore Changi

Sat 18-10

03:10-23:53

2 stops35h 43m

S$ 1,591

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2-7

14:30-00:35

2 stops43h 05m

Singapore Changi

Mon 21-7

13:45-07:52

2 stops33h 07m

S$ 1,685

Flights are sorted by cheapest return flights first.

Deals found on 17-4

Showing 1-10 of 17 results
1
2

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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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?

Use this chart to determine the optimal time to book a return flight from Portland to Singapore. Price data was last updated on 11 April 2025.

To ensure you get the cheapest price possible for a flight from Portland to Singapore, you should look to book at least 72 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.

Rainfall in Singapore by month

Plan your trip to Singapore by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

Temperature in Singapore by month

Plan your trip to Singapore by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

Reviews of airlines servicing Singapore

Get insights into the airlines that provide service to Singapore. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Singapore. Reviews last updated 18 April 2025.
Get a feel of what it's like to fly with Korean Air, Japan Airlines and ANA from Portland to Singapore by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very Good
1,063 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very Good
1,447 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very Good
845 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
China Airlines
8.2
Very Good
729 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very Good
1,289 reviews
Korean Air
8.4
Very Good
1,063 reviews
Check prices

Overall

8.4

Food

8.1

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from Portland to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Portland to Singapore round-trip?

    According to our current data, Air Canada (S$ 928), Delta (S$ 1,052), and Korean Air (S$ 1,060) offers the cheapest pricing from Portland to Singapore. Air Canada is priced at 36% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Portland to Singapore one-way?

    One-way options have recently been found by users for as low as S$ 601 on Korean Air. Other airlines that offer cheap prices include Air Canada from S$ 623 and United Airlines from S$ 736 one-way.

  • 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.

See more FAQs

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Alternative routes for Portland to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Eugene to Singapore flights

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