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$387+ Cheap flights from Oregon 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Find flight deals from Oregon to Singapore

Cheapest flights from Oregon to Singapore
Explore the most affordable flight options available from Oregon to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Air Canada deal was found by Cheapflights users on 10/30. 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 11/111:59 pmPDX - SIN
2 stops40h 01mMultiple Airlines
Sun 11/168:50 amSIN - PDX
1 stop16h 25mMultiple Airlines
Deal found 10/30$809
This Air Canada deal was found by Cheapflights users on 10/30. 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 11/17:38 pmPDX - SIN
2 stops44h 22mAir Canada
Sun 11/168:50 amSIN - PDX
2 stops25h 46mAir Canada
Deal found 10/30$903
This Orbitz deal was found by Cheapflights users on 10/29. 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.
Sat 11/297:00 pmPDX - SIN
2 stops24h 15mMultiple Airlines
Sun 12/711:25 pmSIN - PDX
2 stops31h 15mMultiple Airlines
Deal found 10/29$939
This Gurufare deal was found by Cheapflights users on 10/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:00 amPDX - SIN
2 stops31h 25mChina Eastern
Wed 11/1212:25 amSIN - PDX
2 stops31h 57mChina Eastern
Deal found 10/29$1,001
This United Airlines deal was found by Cheapflights users on 10/30. 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.
Tue 11/182:40 pmBOI - SIN
1 stop26h 20mUnited Airlines
Thu 11/2710:10 amSIN - BOI
1 stop20h 53mUnited Airlines
Deal found 10/30$1,063
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 12/82:20 pmBOI - SIN
1 stop38h 55mUnited Airlines
Fri 12/1210:10 amSIN - BOI
1 stop24h 04mUnited Airlines
Deal found 10/29$1,069
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/96:35 amBOI - SIN
2 stops33h 20mUnited Airlines
Fri 12/1210:10 amSIN - BOI
1 stop28h 34mUnited Airlines
Deal found 10/29$1,072
This Korean Air deal was found by Cheapflights users on 10/30. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/259:00 amBOI - SIN
2 stops24h 10mKorean Air
Sun 1/1810:30 pmSIN - BOI
2 stops32h 27mKorean Air
Deal found 10/30$1,074
This oojo deal was found by Cheapflights users on 10/30. 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.
Tue 11/186:58 pmBOI - SIN
2 stops38h 42mChina Airlines
Wed 11/262:00 amSIN - BOI
2 stops47h 45mChina Airlines
Deal found 10/30$1,092
This United Airlines deal was found by Cheapflights users on 10/29. 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 12/75:25 pmBOI - SIN
2 stops35h 50mUnited Airlines
Fri 12/1210:10 amSIN - BOI
1 stop24h 04mUnited Airlines
Deal found 10/29$1,109
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/76:00 amPDX - SIN
1 stop22h 15mUnited Airlines
Sat 11/1510:10 amSIN - PDX
1 stop26h 28mUnited Airlines
Deal found 10/29$1,125
This oojo deal was found by Cheapflights users on 10/30. 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.
Tue 11/188:41 amBOI - SIN
2 stops36h 24mEVA Air
Thu 11/271:15 pmSIN - BOI
2 stops36h 30mEVA Air
Deal found 10/30$1,144

Cheap flight deals from Oregon to Singapore

Keep the following information in mind while searching for Oregon to Singapore flight deals. Data was last updated October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$735
(Air Canada)

One-way from

$387
(Air Canada)

Popular in

December

Cheapest in

September

Average price

$930
Provider with most accurate pricing for Portland-Singapore Changi flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Singapore Changi flights.
Search Deals
From Oregon to Singapore
Search Deals
One-way flight from Oregon to Singapore
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($195 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oregon 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 October 30, 2025.
Use the filters below to find and compare flights from Oregon to Singapore that are best for you.

Fly from

Oregon

Fly to

Singapore

Route

Depart

Return

Price

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 2/4

9:50 am-12:55 am

2 stops23h 05m

Singapore Changi

Sun 2/15

8:50 am-9:15 am

1 stop16h 25m

$778

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 2/16

7:10 am-5:00 am

2 stops29h 50m

Singapore Changi

Sun 3/1

10:30 pm-4:29 pm

2 stops33h 59m

$866

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/14

5:30 pm-12:10 am

2 stops38h 40m

Singapore Changi

Sun 1/25

1:35 am-12:44 pm

2 stops27h 09m

$866

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 1/14

6:25 am-12:10 am

2 stops25h 45m

Singapore Changi

Sun 2/1

10:30 pm-4:30 pm

2 stops34h 00m

$866

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 1/18

5:30 pm-12:10 am

2 stops38h 40m

Singapore Changi

Sun 1/25

1:35 am-12:44 pm

2 stops27h 09m

$872

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 1/17

7:10 am-12:10 am

2 stops25h 00m

Singapore Changi

Tue 1/27

10:30 pm-4:30 pm

2 stops34h 00m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 1/12

7:10 am-12:10 am

2 stops25h 00m

Singapore Changi

Fri 1/30

1:35 am-12:44 pm

2 stops27h 09m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/13

6:25 am-12:10 am

2 stops25h 45m

Singapore Changi

Sat 1/31

1:35 am-12:44 pm

2 stops27h 09m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 1/13

7:10 am-12:10 am

2 stops25h 00m

Singapore Changi

Fri 1/30

1:35 am-12:44 pm

2 stops27h 09m

$891

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 3/10

6:30 am-12:10 am

2 stops26h 40m

Singapore Changi

Thu 3/12

10:30 pm-1:14 pm

2 stops29h 44m

$891

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 32 results
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Best time to book a flight from Oregon to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Oregon 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 Oregon to Singapore

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

Currently, September is the cheapest month in which you can book a flight from Oregon to Singapore (average of $693). Flying from Oregon to Singapore in December is currently the most expensive (average of $900). 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 OR to SG?

Find hourly flight availability from Oregon 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 October 30, 2025.

It’s optimal to fly from Oregon to Singapore at noon. By choosing this option you can save up to 15% on the cost of your flight, compared to a flight in the morning.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Singapore. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Oregon to Singapore?

    Air Canada, Korean Air, and United Airlines can get you from Oregon to Singapore in just under 21h 34m. Your travel time can differ by up to 8h 16m. There are 8456 mi between Oregon and Singapore. This flight may include one or multiple stops.

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

    Yes. In addition to deals on Oregon to Singapore flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oregon to Singapore?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Singapore.

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

    Yes. Cheapflights offers flight deals from Oregon 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 Oregon to Singapore?

    Currently, September is the cheapest month in which you can book a flight from Oregon to Singapore (average of $693). Flying from Oregon to Singapore in December is currently the most expensive (average of $900). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Oregon to Singapore

Discover the top 5 airlines that operate flights from Oregon 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$694Average$827FlexibilityNo cancel feeOn-time67%
DeltaCheapest$800Average$921FlexibilityNo cancel feeOn-timeN/A
Korean AirCheapest$808Average$956FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$868Average$1,058FlexibilityNo cancel feeOn-time69%
Singapore AirlinesCheapest$891Average$1,143FlexibilityNo cancel feeOn-time81%

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