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$400+ 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 2/23. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
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 September 15, 2025.

Round-trip from

$735
(Air Canada)

One-way from

$400
(Air Canada)

Popular in

December

Cheapest in

September

Average price

$753
From Portland to Singapore
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One-way flight from Portland to Singapore
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Highest demand for flights based on searches. 14% potential increase in price ($173 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 September 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 September 15, 2025.

This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:15 pmPDX - SIN
1 stop24h 45mAir Canada
Thu 11/68:50 amSIN - PDX
1 stop25h 40mAir Canada
Deal found 9/14$735
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Wed 10/297:00 pmPDX - SIN
1 stop21h 00mAir Canada
Wed 11/511:10 pmSIN - PDX
2 stops31h 35mAir Canada
Deal found 9/13$742
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:00 amPDX - SIN
1 stop30h 05mAir Canada
Tue 9/306:15 amSIN - PDX
2 stops27h 31mAir Canada
Deal found 9/14$748
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/303:54 pmPDX - SIN
2 stops24h 06mMultiple Airlines
Thu 11/68:50 amSIN - PDX
1 stop16h 25mMultiple Airlines
Deal found 9/14$750
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Wed 10/293:54 pmPDX - SIN
2 stops24h 06mMultiple Airlines
Wed 11/511:10 pmSIN - PDX
2 stops31h 35mMultiple Airlines
Deal found 9/13$757
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/166:15 amPDX - SIN
2 stops27h 35mMultiple Airlines
Tue 9/306:15 amSIN - PDX
2 stops23h 31mMultiple Airlines
Deal found 9/14$775
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/111:20 pmPDX - SIN
2 stops40h 40mMultiple Airlines
Sun 11/169:00 pmSIN - PDX
2 stops28h 15mMultiple Airlines
Deal found 9/14$794
This Air Canada deal was found by Cheapflights users on 9/15. 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.
Fri 10/177:40 pmPDX - SIN
1 stop20h 25mAir Canada
Sat 10/259:10 amSIN - PDX
1 stop28h 51mAir Canada
Deal found 9/15$795
This Air Canada deal was found by Cheapflights users on 9/15. 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.
Fri 10/179:55 amPDX - SIN
1 stop30h 10mMultiple Airlines
Sat 10/259:10 amSIN - PDX
2 stops23h 11mMultiple Airlines
Deal found 9/15$815

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 September 15, 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 10/30

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Thu 11/6

8:50 am-6:30 pm

1 stop25h 40m

$735

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/16

9:50 am-4:55 am

2 stops27h 05m

Singapore Changi

Sun 3/1

8:50 am-6:30 pm

1 stop25h 40m

$772

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 11/1

7:00 pm-12:25 am

2 stops38h 25m

Singapore Changi

Sun 11/16

8:50 am-6:30 pm

1 stop25h 40m

$822

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/16

9:30 pm-5:45 pm

1 stop28h 15m

Singapore Changi

Sun 3/1

7:00 pm-11:59 pm

1 stop20h 59m

$935

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 11/4

7:30 am-8:25 pm

2 stops44h 55m

Singapore Changi

Fri 11/14

1:35 am-4:22 pm

2 stops30h 47m

$962

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 9/28

8:31 am-6:10 am

2 stops30h 39m

Singapore Changi

Tue 9/30

9:50 pm-9:16 pm

2 stops38h 26m

$1,034

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 1/9

2:50 pm-1:05 pm

2 stops30h 15m

Singapore Changi

Tue 2/10

2:00 am-8:48 pm

2 stops34h 48m

$1,060

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 10/4

3:50 pm-6:15 am

1 stop23h 25m

Singapore Changi

Sat 10/11

8:45 am-6:39 pm

1 stop24h 54m

$1,125

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/23

7:00 pm-12:55 am

2 stops37h 55m

$400

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 2/24

9:40 am-1:00 pm

3 stops35h 20m

$416

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 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, October is the cheapest month in which you can book a flight from Portland to Singapore (average of $1,002). Flying from Portland to Singapore in December is currently the most expensive (average of $1,665). 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 September 15, 2025.

When flying from Portland to Singapore, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 September 15, 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
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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
1,365 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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
7,954 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Crew

8.7

Comfort

8.3

Overall

8.4

Entertainment

8.2

Boarding

8.5

Food

8.1

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 45m. Fly via Air Canada or Singapore Airlines 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, October is the cheapest month in which you can book a flight from Portland to Singapore (average of $1,002). Flying from Portland to Singapore in December is currently the most expensive (average of $1,665). 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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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$694Average$822FlexibilityNo cancel feeOn-time67%
DeltaCheapest$800Average$921FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$808Average$956FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$868Average$1,096FlexibilityNo cancel feeOn-time69%
Singapore AirlinesCheapest$891Average$1,180FlexibilityNo cancel feeOn-time81%

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