HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Singapore

$358+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Singapore with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 August 20, 2025.

Round-trip from

$718
(Air Canada)

One-way from

$358
(Trip.com)

Popular in

December

Cheapest in

September

Average price

$1,037
From Portland to Singapore
Search Deals
One-way flight from Portland to Singapore
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($175 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($62 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 August 20, 2025.

This Air Canada deal was found by Cheapflights users on 8/18. 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 10/283:15 pmPDX - SIN
1 stop24h 45mAir Canada
Tue 11/118:50 amSIN - PDX
1 stop25h 40mAir Canada
Deal found 8/18$718
This Orbitz deal was found by Cheapflights users on 8/20. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/263:44 pmPDX - SIN
2 stops24h 21mAir Canada
Thu 11/68:50 amSIN - PDX
1 stop25h 40mAir Canada
Deal found 8/20$723
This Air Canada deal was found by Cheapflights users on 8/18. 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 11/199:50 amPDX - SIN
1 stop29h 10mAir Canada
Tue 3/38:30 amSIN - PDX
2 stops26h 00mAir Canada
Deal found 8/18$725
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/410:00 amPDX - SIN
2 stops23h 45mAir Canada
Thu 9/259:10 amSIN - PDX
1 stop24h 36mAir Canada
Deal found 8/18$731
This Air Canada deal was found by Cheapflights users on 8/18. 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 9/176:15 amPDX - SIN
2 stops27h 30mAir Canada
Tue 9/306:15 amSIN - PDX
2 stops23h 31mAir Canada
Deal found 8/18$745
This Air Canada deal was found by Cheapflights users on 8/19. 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 9/176:15 amPDX - SIN
2 stops27h 30mAir Canada
Sat 9/279:10 amSIN - PDX
1 stop28h 51mAir Canada
Deal found 8/19$749

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 August 20, 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

9:50 am-7:00 am

1 stop30h 10m

Singapore Changi

Thu 11/27

8:50 am-6:30 pm

1 stop25h 40m

$718

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 10/28

3:15 pm-7:00 am

1 stop24h 45m

Singapore Changi

Tue 11/11

8:50 am-6:30 pm

1 stop25h 40m

$718

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 9/16

7:40 pm-7:05 am

1 stop20h 25m

Singapore Changi

Tue 9/30

9:10 am-11:01 pm

1 stop28h 51m

$718

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 11/19

9:50 am-7:00 am

1 stop29h 10m

Singapore Changi

Tue 3/3

8:30 am-6:30 pm

2 stops26h 00m

$725

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/15

11:07 am-6:55 pm

2 stops40h 48m

$358

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 11/6

9:50 am-12:55 am

2 stops23h 05m

$401

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/2

5:08 pm-3:45 am

3 stops43h 37m

$427

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 9/18

7:40 pm-7:05 am

1 stop20h 25m

$447

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 9/18

7:40 pm-12:50 am

2 stops38h 10m

$475

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 11/1

11:16 pm-7:00 am

2 stops40h 44m

$476

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

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 $996). Flying from Portland to Singapore in December is currently the most expensive (average of $1,684). 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 August 20, 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 August 20, 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
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,131 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,347 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
8,928 reviews
Korean Air
8.4
Very good
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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
1,131 reviews

Crew

8.7

Food

8.1

Comfort

8.3

Entertainment

8.2

Overall

8.4

Boarding

8.5

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 to get the fastest option. Airlines will cover a distance of 8123 mi.

  • 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 $996). Flying from Portland to Singapore in December is currently the most expensive (average of $1,684). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Singapore

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Narita flights
Portland to Haneda flights
Portland to Suvarnabhumi flights
Portland to Manila flights
Portland to Ho Chi Minh City flights
Boise to Narita flights
Boise to Haneda flights
Portland to Taiwan Taoyuan Intl flights
Portland to Kansai Intl flights
Portland to Hyderabad flights
Portland to New Delhi flights
Portland to Hong Kong flights
Portland to Sung Shan flights
Portland to Incheon Intl flights
Portland to Hongqiao Intl flights
Portland to Singapore flights
Portland to Denpasar flights
Portland to Itami flights
Portland to Bangalore flights
Portland to Mumbai flights
Boise to Incheon Intl flights
Portland to Pu Dong flights
Boise to Gimpo Intl flights
Portland to Soekarno-Hatta Intl flights
Boise to Suvarnabhumi flights
Eugene to Narita flights
Medford to Suvarnabhumi flights
Portland to Kobe flights
Eugene to Suvarnabhumi flights
Portland to Chiang Mai flights
Eugene to Haneda flights
Portland to Gimpo Intl flights
Portland to Kathmandu flights
Portland to Hanoi flights
Portland to Capital flights
Portland to Kolkata flights
Portland to Malé flights
Portland to Ahmedabad flights
Portland to Chennai flights
Eugene to Singapore flights
Portland to Colombo flights
Portland to Angeles City flights
Portland to Fukuoka flights
Portland to Chitose flights
Portland to Surabaya flights
Portland to Guangzhou flights
Portland to Phuket City flights
Portland to Kuala Lumpur Intl flights
Portland to Phnom Penh flights
Medford to Narita flights

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 August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$694Average$828FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$797Average$1,059FlexibilityNo cancel feeOn-time69%
DeltaCheapest$800Average$921FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$808Average$956FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$911Average$1,216FlexibilityNo cancel feeOn-time81%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.