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$344+ Cheap flights from Portland (PDX) to Singapore

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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
nov. 15 — nov. 221
sáb. 11/15
sáb. 11/22
1 adult, Economy
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Cheap flight deals from Portland to Singapore

Keep the following information in mind while searching for Portland to Singapore flight deals. Data was last updated octubre 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$735
(Air Canada)

One-way from

$344
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$911
Provider with most accurate pricing for Portland-Singapore Changi flight deals.
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Provider most trusted by Cheapflights users for Portland-Singapore Changi flights.
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From Portland to Singapore
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One-way flight from Portland to Singapore
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($62 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 16, 2025.

This Air Canada deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/133:15 pmPDX - SIN
1 stop23h 45mAir Canada
jue. 11/208:50 amSIN - PDX
1 stop21h 50mAir Canada
Deal found 10/16$735
This Air Canada deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/131:00 pmPDX - SIN
2 stops26h 00mMultiple Airlines
jue. 11/208:50 amSIN - PDX
1 stop16h 25mMultiple Airlines
Deal found 10/16$749
This Air Canada deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/77:00 pmPDX - SIN
2 stops24h 15mAir Canada
dom. 11/169:00 pmSIN - PDX
2 stops28h 15mAir Canada
Deal found 10/16$768
This Air Canada deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/157:00 pmPDX - SIN
2 stops27h 50mAir Canada
sáb. 11/228:50 amSIN - PDX
1 stop25h 40mAir Canada
Deal found 10/16$797
This Air Canada deal was found by Cheapflights users on 10/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/13:54 pmPDX - SIN
2 stops48h 06mAir Canada
dom. 11/169:00 pmSIN - PDX
2 stops28h 15mAir Canada
Deal found 10/16$875
This Ovago deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/296:29 amPDX - SIN
2 stops25h 41mKorean Air
vie. 12/51:35 amSIN - PDX
2 stops27h 39mKorean Air
Deal found 10/14$916

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated octubre 16, 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

vie. 11/7

7:00 pm-11:15 am

2 stops24h 15m

Singapore Changi

dom. 11/16

9:00 pm-9:15 am

2 stops28h 15m

$768

PortlandSingapore

PDX - SIN

PDXSIN

Portland

lun. 2/16

9:50 am-4:55 am

2 stops27h 05m

Singapore Changi

dom. 3/1

8:50 am-6:30 pm

1 stop25h 40m

$772

PortlandSingapore

PDX - SIN

PDXSIN

Portland

dom. 3/22

7:00 pm-10:50 pm

2 stops36h 50m

Singapore Changi

vie. 3/27

8:50 am-6:30 pm

1 stop24h 40m

$874

PortlandSingapore

PDX - SIN

PDXSIN

Portland

lun. 3/2

6:30 am-12:10 am

2 stops25h 40m

Singapore Changi

jue. 3/12

1:35 am-1:14 pm

2 stops26h 39m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mar. 3/10

9:10 am-12:10 am

2 stops24h 00m

Singapore Changi

jue. 3/12

10:30 pm-4:15 pm

2 stops32h 45m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

lun. 2/16

7:45 pm-5:45 pm

1 stop30h 00m

Singapore Changi

dom. 3/1

7:00 pm-11:59 pm

1 stop20h 59m

$935

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mié. 10/29

5:55 pm-1:05 pm

2 stops28h 10m

Singapore Changi

lun. 11/3

1:25 am-1:50 pm

2 stops28h 25m

$1,027

PortlandSingapore

PDX - SIN

PDXSIN

Portland

jue. 11/13

3:15 pm-2:00 pm

2 stops30h 45m

Singapore Changi

mié. 11/19

4:50 am-9:15 am

3 stops44h 25m

$1,052

PortlandSingapore

PDX - SIN

PDXSIN

Portland

dom. 3/22

5:45 pm-5:00 am

2 stops44h 15m

Singapore Changi

jue. 3/26

1:35 am-8:47 pm

2 stops34h 12m

$1,058

PortlandSingapore

PDX - SIN

PDXSIN

Portland

sáb. 11/15

1:21 pm-11:40 pm

2 stops42h 19m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

Showing 1-10 of 15 results
1
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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 round-trip 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

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

Currently, September is the cheapest month in which you can book a flight from Portland to Singapore (average of $693). Flying from Portland to Singapore in December is currently the most expensive (average of $894). 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.

What is the cheapest time of day to fly from PDX to SG?

Find hourly flight availability from Portland to Singapore. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated octubre 16, 2025.

When flying from Portland to Singapore, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 23% versus a flight in the evening.

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 octubre 16, 2025.
Read reviews from past customers who have flown Korean Air, Singapore Airlines, and Delta from Portland to Singapore. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
1,149 reviews
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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
1,382 reviews
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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.
Delta
8.0
Very good
7,982 reviews
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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.
United Airlines
7.4
Good
8,982 reviews
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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.
Air Canada
7.1
Good
10,307 reviews
Korean Air
8.4
Very good
1,149 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Crew

8.7

Entertainment

8.2

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 airport do you fly from for flights from Portland to Singapore?

    Located just 6.0 mi from the city center, Portland (PDX) is the airport most travelers will use when flying to Singapore from Portland.

  • How long is the flight from Portland to Singapore?

    There are many flights that can get you from Portland to Singapore in 24h 15m. Fly via Air Canada or Korean Air to get the fastest option. Airlines will cover a distance of 8123 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 vacation 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, September is the cheapest month in which you can book a flight from Portland to Singapore (average of $693). Flying from Portland to Singapore in December is currently the most expensive (average of $894). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 5 airlines flying from Portland to Singapore

Discover the top 5 airlines that operate flights from Portland to Singapore. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated octubre 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$694Average$833FlexibilityNo cancel feeOn-time67%
DeltaCheapest$800Average$921FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$808Average$956FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$868Average$1,074FlexibilityNo cancel feeOn-time69%
Singapore AirlinesCheapest$891Average$1,131FlexibilityNo cancel feeOn-time81%

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