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$449+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
Jun 18 — Jun 251
Thu 6/18
Thu 6/25
1 adult, Economy
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Cheap 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 May 19, 2026.

This oojo deal was found by Cheapflights users on 5/16. 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.
Mon 10/197:15 am
PDX
-
SIN
1 stop20h 55m
Singapore Airlines
Tue 11/179:00 am
SIN
-
PDX
1 stop20h 14m
Singapore Airlines
Deal found 5/16$944
This oojo deal was found by Cheapflights users on 5/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:20 am
PDX
-
SIN
1 stop20h 15m
Singapore Airlines
Sat 10/39:00 am
SIN
-
PDX
1 stop19h 27m
Singapore Airlines
Deal found 5/18$951
This oojo deal was found by Cheapflights users on 5/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:00 pm
PDX
-
SIN
1 stop22h 40m
Singapore Airlines
Thu 10/229:00 am
SIN
-
PDX
1 stop19h 27m
Singapore Airlines
Deal found 5/18$976
This oojo deal was found by Cheapflights users on 5/17. 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.
Thu 9/35:07 am
PDX
-
SIN
1 stop21h 28m
Singapore Airlines
Thu 9/109:00 am
SIN
-
PDX
1 stop22h 50m
Singapore Airlines
Deal found 5/17$992
This FlightHub deal was found by Cheapflights users on 5/17. 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 9/38:07 am
PDX
-
SIN
2 stops40h 38m
Qatar Airways
Thu 9/107:40 pm
SIN
-
PDX
2 stops41h 21m
Qatar Airways
Deal found 5/17$1,007
This Orbitz deal was found by Cheapflights users on 5/16. 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.
Thu 10/293:01 pm
EUG
-
SIN
1 stop35h 44m
Multiple Airlines
Tue 11/249:00 am
SIN
-
EUG
1 stop18h 12m
Multiple Airlines
Deal found 5/16$1,012
This oojo deal was found by Cheapflights users on 5/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:07 am
PDX
-
SIN
1 stop21h 28m
Singapore Airlines
Sat 10/109:00 am
SIN
-
PDX
1 stop23h 00m
Singapore Airlines
Deal found 5/18$1,035
This FlightHub deal was found by Cheapflights users on 5/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/812:18 pm
PDX
-
SIN
2 stops29h 32m
Qatar Airways
Wed 10/213:15 am
SIN
-
PDX
2 stops28h 45m
Qatar Airways
Deal found 5/18$1,042
This FlightHub deal was found by Cheapflights users on 5/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1712:03 pm
PDX
-
SIN
2 stops36h 42m
Qatar Airways
Mon 8/313:15 am
SIN
-
PDX
2 stops34h 43m
Qatar Airways
Deal found 5/15$1,052
This Cheapflightsfares deal was found by Cheapflights users on 5/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:45 am
PDX
-
SIN
2 stops37h 00m
Qatar Airways
Fri 10/93:15 am
SIN
-
PDX
2 stops33h 44m
Qatar Airways
Deal found 5/14$1,070
This Travelocity deal was found by Cheapflights users on 5/17. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:23 am
BOI
-
SIN
1 stop21h 12m
Multiple Airlines
Thu 9/249:05 am
SIN
-
BOI
1 stop27h 22m
Multiple Airlines
Deal found 5/17$1,093
This FlightHub deal was found by Cheapflights users on 5/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/1310:03 am
EUG
-
SIN
2 stops38h 42m
Qatar Airways
Fri 9/257:40 pm
SIN
-
EUG
2 stops36h 28m
Qatar Airways
Deal found 5/15$1,107

Find flight deals from Oregon to Singapore

Keep the following information in mind while searching for Oregon to Singapore flight deals. Data was last updated May 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$944
(oojo)

One-way from

$449
(oojo)

Popular in

December

Cheapest in

January

Average price

$913
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. 11% potential increase in price ($141 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
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 May 19, 2026.
Use the filters below to find and compare flights from Oregon to Singapore that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 10/1

11:45 am-3:45 pm

2 stops37h 00m

Singapore Changi

Fri 10/9

3:15 am-9:59 pm

2 stops33h 44m

$1,070

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 10/21

12:18 pm-8:50 am

2 stops29h 32m

Singapore Changi

Tue 11/17

3:15 am-3:25 pm

2 stops28h 10m

$1,086

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Fri 9/18

6:23 am-5:35 pm

1 stop21h 12m

Singapore Changi

Thu 9/24

9:05 am-10:27 pm

1 stop27h 22m

$1,093

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Tue 10/20

12:18 pm-8:50 am

2 stops29h 32m

Singapore Changi

Sat 11/14

3:15 am-4:50 pm

2 stops29h 35m

$1,126

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 10/17

12:18 pm-8:50 am

2 stops29h 32m

Singapore Changi

Tue 11/17

3:15 am-3:25 pm

2 stops28h 10m

$1,126

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 8/17

7:15 pm-6:35 pm

1 stop32h 20m

Singapore Changi

Tue 9/1

11:05 am-2:47 pm

2 stops42h 42m

$1,162

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 11/1

7:10 am-12:10 am

2 stops25h 00m

Singapore Changi

Thu 11/5

10:30 pm-3:05 pm

2 stops32h 35m

$1,165

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 8/15

3:43 pm-6:40 am

2 stops47h 57m

Singapore Changi

Sat 8/29

11:05 am-10:45 pm

2 stops26h 40m

$1,165

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Thu 6/25

10:52 am-9:15 pm

2 stops44h 23m

Singapore Changi

Sun 7/5

7:40 pm-10:07 pm

2 stops40h 27m

$1,173

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Sun 11/1

8:40 am-12:10 am

2 stops24h 30m

Singapore Changi

Thu 11/5

10:40 am-3:30 pm

2 stops43h 50m

$1,175

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/16

Showing 1-10 of 36 resultsSorted by cheapest first
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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

How far ahead should I book a flight from Oregon to Singapore?

The best time to book flights from Oregon to Singapore is 54 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 June is currently the most expensive (average of $887). 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.

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?

    Qatar Airways, United Airlines, and Korean Air can get you from Oregon to Singapore in just under 24h 30m. Your travel time can differ by up to 12h 30m. There are 8456 mi between Oregon and Singapore. This flight may include one or multiple stops.

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

    $387 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on ANA and United Airlines, with prices starting from $420 and $564, respectively.

  • 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 June is currently the most expensive (average of $887). 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

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Top 3 airlines flying from Oregon to Singapore

Discover the top 3 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 May 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$694Average$931FlexibilityNo cancel feeOn-time67%
Singapore AirlinesCheapest$837Average$1,000FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$1,024Average$1,312FlexibilityNo cancel feeOn-time69%

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