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$409+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$778
(United Airlines)

One-way from

$409
(United Airlines)

Popular in

December

Cheapest in

February

Average price

$1,230
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
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Highest demand for flights based on searches. 2% potential increase in price ($36 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($30 potential savings vs. average RT price).
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Average for round-trip flights in March 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 March 3, 2025.

This United Airlines deal was found by Cheapflights users on 3/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/39:54 amPDX - SIN
1 stop41h 31mUnited Airlines
Sun 11/210:20 pmSIN - PDX
2 stops38h 29mUnited Airlines
Deal found 3/3$778
This FlightHub deal was found by Cheapflights users on 3/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:40 amPDX - SIN
2 stops22h 40mJapan Airlines
Thu 9/258:05 amSIN - PDX
2 stops28h 25mJapan Airlines
Deal found 3/3$796
This Delta deal was found by Cheapflights users on 3/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/227:29 pmPDX - SIN
2 stops37h 41mDelta
Wed 3/2611:00 amSIN - PDX
2 stops22h 46mDelta
Deal found 3/3$807
This Air Canada deal was found by Cheapflights users on 3/3. 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 4/253:25 pmPDX - SIN
1 stop24h 40mAir Canada
Sat 5/109:10 amSIN - PDX
1 stop28h 45mAir Canada
Deal found 3/3$832
This Fareboom deal was found by Cheapflights users on 3/1. 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 Fareboom is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/27:40 amPDX - SIN
2 stops25h 10mMultiple Airlines
Sun 11/1610:45 amSIN - PDX
2 stops25h 50mMultiple Airlines
Deal found 3/1$834
This Ovago deal was found by Cheapflights users on 3/3. 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.
Tue 4/19:12 amPDX - SIN
2 stops28h 48mKorean Air
Mon 4/141:10 amSIN - PDX
2 stops34h 49mKorean Air
Deal found 3/3$932
This Cheapflightsfares deal was found by Cheapflights users on 3/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/136:05 amPDX - SIN
2 stops32h 20mChina Eastern
Thu 4/1712:55 amSIN - PDX
2 stops29h 58mChina Eastern
Deal found 3/3$1,060
This oojo deal was found by Cheapflights users on 3/2. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:00 amPDX - SIN
2 stops26h 50mCathay Pacific
Mon 5/191:50 amSIN - PDX
2 stops29h 34mCathay Pacific
Deal found 3/2$1,107
This FlightHub deal was found by Cheapflights users on 3/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/187:00 amPDX - SIN
1 stop21h 10mSingapore Airlines
Mon 9/229:15 amSIN - PDX
1 stop22h 13mSingapore Airlines
Deal found 3/1$1,131
This Ovago deal was found by Cheapflights users on 3/2. 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.
Sat 3/88:00 amPDX - SIN
2 stops32h 45mQatar Airways
Fri 3/143:15 amSIN - PDX
2 stops28h 11mQatar Airways
Deal found 3/2$1,302

Find flights from Portland to Singapore within your budget

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 March 3, 2025.

Fly from

Portland

Fly to

Singapore

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 8/3

9:54 am-6:25 pm

1 stop41h 31m

Singapore Changi

Sun 11/2

10:20 pm-8:49 pm

2 stops38h 29m

$778

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 3/22

7:29 pm-12:10 am

2 stops37h 41m

Singapore Changi

Wed 3/26

11:00 am-6:46 pm

2 stops22h 46m

$807

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 4/25

3:25 pm-7:05 am

1 stop24h 40m

Singapore Changi

Sat 5/10

9:10 am-10:55 pm

1 stop28h 45m

$832

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 5/17

7:40 pm-11:20 pm

2 stops36h 40m

Singapore Changi

Sat 5/31

9:10 am-6:35 pm

2 stops24h 25m

$889

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/1

9:12 am-5:00 am

2 stops28h 48m

Singapore Changi

Mon 4/14

1:10 am-8:59 pm

2 stops34h 49m

$932

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 4/13

6:05 am-5:25 am

2 stops32h 20m

Singapore Changi

Thu 4/17

12:55 am-3:53 pm

2 stops29h 58m

$1,060

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/29

7:40 am-12:20 am

2 stops25h 40m

Singapore Changi

Mon 5/12

1:55 am-4:19 pm

2 stops29h 24m

$1,089

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 4/30

7:00 am-12:50 am

2 stops26h 50m

Singapore Changi

Mon 5/19

1:50 am-4:24 pm

2 stops29h 34m

$1,107

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 4/17

11:50 am-9:00 am

2 stops30h 10m

Singapore Changi

Thu 5/1

3:10 am-4:48 pm

2 stops28h 38m

$1,395

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 4/15

3:45 pm-6:45 am

1 stop24h 00m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 16 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.

Travel insights for flights from Portland to Singapore

Get recent, data-driven insights about flights from Portland to Singapore including ideal travel times, pricing trends, and more.

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 $1,011). 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 March 3, 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.

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 5.9 - 10.6 inches per month. December is typically the wettest month, when rainfall can reach 10.6 in. July is typically the driest time to visit Singapore when rainfall is around 5.9 in.

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 82.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 78.8 F).

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 March 3, 2025.
Read reviews from past customers who have flown Korean Air, Japan Airlines and Singapore Airlines from Portland to Singapore. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Korean Air
8.4
Very good
1,035 reviews
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Japan Airlines
8.3
Very good
1,435 reviews
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Singapore Airlines
8.1
Very good
1,288 reviews
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Delta
8.0
Very good
8,068 reviews
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

Cathay Pacific
7.5
Good
825 reviews
Korean Air
8.4
Very good
1,035 reviews

Comfort

8.3

Overall

8.4

Boarding

8.5

Food

8.1

Entertainment

8.2

Crew

8.7

Reviews

1 / 20

6.0
Good

Anonymous,Feb 2025

ATL - SBN

Regional jets are small and uncomfortable. When flying in or out of South Bend airport, that's usually what I'm on. It's the price one pays for the great convenience of using a small airport (cheap parking, no lines). The CRJ900 has engines attached to the fuselage near the rear of the plane. So, very loud in the back of the plane, and I happened to have the far back corner that also had no window. Oh well, a short flight and pleasant neighbor and cheerful attendant.

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.

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

    The cheapest airlines for a one-way flight from Portland to Singapore are United Airlines ($409), Delta ($458), and China Eastern ($688).

  • 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 $1,011). 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

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Top 3 airlines flying from Portland to Singapore

Discover the top 3 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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$727Average$1,050FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$845Average$1,256FlexibilityNo cancel feeOn-time69%
Singapore AirlinesCheapest$1,023Average$1,286FlexibilityNo cancel feeOn-time81%
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