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

According to our current data, Air Canada (S$ 888), Singapore Airlines (S$ 1,016), and China Airlines (S$ 1,251) offers the cheapest pricing from Portland to Singapore. Air Canada is priced at 35% lower than the current average price of a flight leaving 3 months from now. Find deals

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$ 586 on Air Canada. Other airlines that offer cheap prices include United Airlines from S$ 727 and Delta from S$ 1,606 one-way. Find deals

What is the cheapest day to fly from Portland to Singapore?

Travellers seeking maximum savings on their Portland to Singapore flight should consider departing on Saturday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time. Find deals

What is the cheapest day to fly return from Portland to Singapore?

Friday flights are generally found to be more expensive for flights from Portland to Singapore. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Singapore.

What is the cheapest month to fly from Portland to Singapore?

The best pricing can be found in the month of September. Prices to Singapore from Portland average S$ 1,370. You can even find prices in September for less than S$ 1,370, as users have found deals to Singapore from as low as S$ 887. The month of December appears to be one of the more expensive times to travel to Singapore from Portland. Flying in the targeted month can save you up to 36%.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 46% on flights from Portland to Singapore by exploring options for tickets at midday.

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.

S$ 573+ Flights from Portland to Singapore

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

Cheap flight deals from Portland to Singapore

Round-trip from	S$ 888
One-way from	S$ 573
Popular in	December
Cheapest in	September
Average price	S$ 1,397

Air Canada
16-9-30-9
2 total stops
49h 16m total
Portland to Singapore

Search Deals

16-7
2 total stops
36h 35m total
Portland to Singapore

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (S$ 195 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (S$ 58 potential savings vs. average return price).

Search Deals

Average for round-trip flights in June 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 13 June 2025.

Tue 16-919:40PDX - SIN

1 stop20h 25mAir Canada

Tue 30-909:10SIN - PDX

1 stop28h 51mAir Canada

Deal found 13-6S$ 888

Wed 24-919:40PDX - SIN

2 stops36h 40mMultiple Airlines

Wed 22-1008:00SIN - PDX

2 stops25h 46mMultiple Airlines

Deal found 10-6S$ 952

Wed 15-1007:00PDX - SIN

1 stop21h 10mSingapore Airlines

Wed 29-1009:15SIN - PDX

1 stop19h 08mSingapore Airlines

Deal found 13-6S$ 1,016

Tue 16-917:36PDX - SIN

2 stops39h 59mChina Airlines

Mon 20-1002:00SIN - PDX

2 stops53h 50mChina Airlines

Deal found 10-6S$ 1,251

Sat 2-816:55PDX - SIN

2 stops45h 05mKorean Air

Fri 8-807:30SIN - PDX

2 stops22h 23mKorean Air

Deal found 13-6S$ 1,270

Wed 15-1007:00PDX - SIN

2 stops26h 20mJapan Airlines

Tue 28-1002:20SIN - PDX

2 stops29h 30mJapan Airlines

Deal found 11-6S$ 1,301

Wed 17-919:35PDX - SIN

1 stop19h 40mUnited Airlines

Tue 30-908:45SIN - PDX

1 stop20h 57mUnited Airlines

Deal found 13-6S$ 1,312

Fri 19-905:30PDX - SIN

2 stops27h 10mDelta

Wed 22-1007:30SIN - PDX

2 stops24h 36mDelta

Deal found 10-6S$ 1,315

Thu 4-908:30PDX - SIN

2 stops24h 50mAmerican Airlines

Wed 24-901:55SIN - PDX

2 stops27h 28mAmerican Airlines

Deal found 13-6S$ 1,334

Tue 30-907:30PDX - SIN

2 stops26h 15mANA

Thu 30-1006:35SIN - PDX

2 stops23h 11mANA

Deal found 10-6S$ 1,393

Thu 2-1013:24PDX - SIN

2 stops35h 21mQatar Airways

Sun 26-1002:00SIN - PDX

2 stops33h 27mQatar Airways

Deal found 10-6S$ 1,586

Best flights from Portland to Singapore
Discover carefully curated flight deals from Portland to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 June 2025.

Tue 16-919:40PDX - SIN

1 stop20h 25mAir Canada

Tue 30-909:10SIN - PDX

1 stop28h 51mAir Canada

Deal found 13-6S$ 888

Wed 24-919:40PDX - SIN

2 stops36h 40mMultiple Airlines

Wed 22-1008:00SIN - PDX

2 stops25h 46mMultiple Airlines

Deal found 10-6S$ 952

Wed 15-1007:00PDX - SIN

1 stop21h 10mSingapore Airlines

Wed 29-1009:15SIN - PDX

1 stop19h 08mSingapore Airlines

Deal found 13-6S$ 1,016

Tue 16-917:36PDX - SIN

2 stops39h 59mChina Airlines

Mon 20-1002:00SIN - PDX

2 stops53h 50mChina Airlines

Deal found 10-6S$ 1,251

Sat 2-816:55PDX - SIN

2 stops45h 05mKorean Air

Fri 8-807:30SIN - PDX

2 stops22h 23mKorean Air

Deal found 13-6S$ 1,270

Wed 15-1007:00PDX - SIN

2 stops26h 20mJapan Airlines

Tue 28-1002:20SIN - PDX

2 stops29h 30mJapan Airlines

Deal found 11-6S$ 1,301

Wed 17-919:35PDX - SIN

1 stop19h 40mUnited Airlines

Tue 30-908:45SIN - PDX

1 stop20h 57mUnited Airlines

Deal found 13-6S$ 1,312

Fri 19-905:30PDX - SIN

2 stops27h 10mDelta

Wed 22-1007:30SIN - PDX

2 stops24h 36mDelta

Deal found 10-6S$ 1,315

Thu 4-908:30PDX - SIN

2 stops24h 50mAmerican Airlines

Wed 24-901:55SIN - PDX

2 stops27h 28mAmerican Airlines

Deal found 13-6S$ 1,334

Tue 30-907:30PDX - SIN

2 stops26h 15mANA

Thu 30-1006:35SIN - PDX

2 stops23h 11mANA

Deal found 10-6S$ 1,393

Thu 2-1013:24PDX - SIN

2 stops35h 21mQatar Airways

Sun 26-1002:00SIN - PDX

2 stops33h 27mQatar Airways

Deal found 10-6S$ 1,586

Last-minute flights from Portland to Singapore
Discover last-minute flight deals from Portland to Singapore. Data last updated 13 June 2025 and is based on user searches.

Wed 18-615:25PDX - SIN

2 stops31h 50mMultiple Airlines

Sun 29-609:10SIN - PDX

1 stop24h 36mMultiple Airlines

Deal found 11-6S$ 6,115

Wed 18-617:09PDX - SIN

2 stops29h 41mEVA Air

Sun 29-613:10SIN - PDX

2 stops26h 04mEVA Air

Deal found 12-6S$ 6,774

Wed 18-607:55PDX - SIN

2 stops31h 15mJapan Airlines

Sat 28-601:55SIN - PDX

2 stops35h 34mJapan Airlines

Deal found 12-6S$ 7,027

Wed 18-613:25PDX - SIN

1 stop25h 50mUnited Airlines

Sun 29-608:45SIN - PDX

1 stop21h 10mUnited Airlines

Deal found 11-6S$ 9,268

Sat 5-713:15PDX - SIN

1 stop35h 15mKLM

Wed 16-700:40SIN - PDX

2 stops31h 25mKLM

Deal found 11-6S$ 2,838

Wed 9-719:40PDX - SIN

2 stops36h 40mAir Canada

Tue 15-701:45SIN - PDX

2 stops28h 05mAir Canada

Deal found 10-6S$ 965

Wed 9-707:00PDX - SIN

1 stop21h 10mSingapore Airlines

Wed 16-709:15SIN - PDX

1 stop19h 35mSingapore Airlines

Deal found 10-6S$ 3,195

Wed 23-709:15PDX - SIN

2 stops23h 25mKorean Air

Wed 30-707:30SIN - PDX

2 stops22h 23mKorean Air

Deal found 11-6S$ 1,315

Wed 23-710:30PDX - SIN

2 stops22h 50mJapan Airlines

Wed 30-708:05SIN - PDX

2 stops21h 36mJapan Airlines

Deal found 11-6S$ 6,440

Fri 25-707:37PDX - SIN

1 stop19h 48mUnited Airlines

Fri 1-806:15SIN - PDX

2 stops41h 42mUnited Airlines

Deal found 10-6S$ 1,466

Sat 26-719:40PDX - SIN

2 stops27h 35mMultiple Airlines

Sat 2-809:10SIN - PDX

1 stop39h 20mMultiple Airlines

Deal found 11-6S$ 1,321

Sun 27-706:15PDX - SIN

2 stops31h 45mDelta

Sun 3-807:30SIN - PDX

2 stops22h 23mDelta

Deal found 12-6S$ 1,532

One-way flights from Portland to Singapore
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated 13 June 2025.

Wed 16-717:55PDX - SIN

2 stops36h 35mMultiple Airlines

Deal found 11-6S$ 573

Thu 18-915:25PDX - SIN

1 stop24h 40mAir Canada

Deal found 12-6S$ 586

Mon 28-707:37PDX - SIN

1 stop19h 48mUnited Airlines

Deal found 13-6S$ 727

Mon 7-700:40PDX - SIN

2 stops37h 20mDelta

Deal found 11-6S$ 1,606

Tue 1-711:16PDX - SIN

2 stops33h 44mEVA Air

Deal found 12-6S$ 3,698

Sat 27-907:03PDX - SIN

1 stop21h 07mSingapore Airlines

Deal found 12-6S$ 5,456

Sun 23-1119:45PDX - SIN

2 stops25h 40mSTARLUX Airlines

Deal found 13-6S$ 14,746

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

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 16-9

19:40-07:05

1 stop20h 25m

Singapore Changi

Tue 30-9

09:10-23:01

1 stop28h 51m

S$ 888

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 24-9

19:40-23:20

2 stops36h 40m

Singapore Changi

Wed 22-10

08:00-18:46

2 stops25h 46m

S$ 952

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 15-10

07:00-19:10

1 stop21h 10m

Singapore Changi

Wed 29-10

09:15-13:23

1 stop19h 08m

S$ 1,016

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 16-9

17:36-00:35

2 stops39h 59m

Singapore Changi

Mon 20-10

02:00-16:50

2 stops53h 50m

S$ 1,251

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 2-8

16:55-05:00

2 stops45h 05m

Singapore Changi

Fri 8-8

07:30-14:53

2 stops22h 23m

S$ 1,270

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 15-10

07:00-00:20

2 stops26h 20m

Singapore Changi

Tue 28-10

02:20-16:50

2 stops29h 30m

S$ 1,301

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 17-9

19:35-06:15

1 stop19h 40m

Singapore Changi

Tue 30-9

08:45-14:42

1 stop20h 57m

S$ 1,312

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 19-9

05:30-23:40

2 stops27h 10m

Singapore Changi

Wed 22-10

07:30-17:06

2 stops24h 36m

S$ 1,315

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 4-9

08:30-00:20

2 stops24h 50m

Singapore Changi

Wed 24-9

01:55-14:23

2 stops27h 28m

S$ 1,334

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 30-9

07:30-00:45

2 stops26h 15m

Singapore Changi

Thu 30-10

06:35-14:46

2 stops23h 11m

S$ 1,393

Flights are sorted by cheapest return flights first.

Deals found on 11-6

Showing 1-10 of 17 results

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?

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

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

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 a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air 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.

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

STARLUX Airlines

9.1

Wonderful

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

EVA Air

8.4

Very Good

1,204 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Korean Air

8.4

Very Good

1,091 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Japan Airlines

8.3

Very Good

1,490 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

China Airlines

8.3

Very Good

738 reviews

STARLUX Airlines

9.1

Wonderful

Check prices

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Related info for your journey

What are the cheapest airlines flying from Portland to Singapore round-trip?
According to our current data, Air Canada (S$ 888), Singapore Airlines (S$ 1,016), and China Airlines (S$ 1,251) offers the cheapest pricing from Portland to Singapore. Air Canada is priced at 35% 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$ 586 on Air Canada. Other airlines that offer cheap prices include United Airlines from S$ 727 and Delta from S$ 1,606 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Portland to Singapore

Eugene to Singapore flights

Other flights to Singapore

Singapore to Medan flights

Singapore to Penang flights

Singapore to Langkawi flights

Singapore to Kuantan flights

Singapore to Ipoh flights

Singapore to Phuket City flights

Singapore to Ho Chi Minh City flights

Singapore to Kota Kinabalu flights

Singapore to Kuching flights

Singapore to Krabi flights

Singapore to Denpasar flights

Singapore to Penang flights

Singapore to Langkawi flights

Singapore to Angeles City flights

Singapore to Surabaya flights

Singapore to Da Nang flights

Singapore to Chennai flights

Singapore to Hanoi flights

Fly with Cheapflights

How does Cheapflights help users find flights from Portland to Singapore?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Singapore from Portland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Portland to Singapore?

Cheapflights helps you find that perfect flight to Singapore from Portland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Portland to Singapore with no change fees?

Yes, we can. To see specific flights from Portland to Singapore with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Portland to Singapore become cheaper?

Not ready to book yet? You can track prices for flights from Portland to Singapore on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.

Cheap flights from Portland to Singapore from S$ 573

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 16-7. Fares are subject to change and may not be available on all flights or dates of travel.

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

Cheap flight deals from Portland to Singapore

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Singapore

Cheapest flights from Portland to SingaporeExplore 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 13 June 2025.

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 13 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Singapore that are best for you.

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.

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 9 June 2025.

Rainfall in Singapore by month

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

Temperature in Singapore by month

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

Reviews of airlines servicing Singapore

Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and Korean Air 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.

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?

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

Can I find deals for flights from Portland to Singapore that include hotel bookings?

How can I find direct flights from Portland to Singapore?

Can I find deals for business class flights from Portland to Singapore?

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portland to Singapore?

Why should you use Cheapflights to find cheap flight tickets from Portland to Singapore?

Can Cheapflights find flights from Portland to Singapore with no change fees?

Can Cheapflights notify me if prices for flights from Portland to Singapore become cheaper?

100% Free

Book with Flexibility

Travel Smart

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 13 June 2025.