Find flights
When to book
FAQs

Cheap flights from Oregon to Singapore from S$ 545

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 16-2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Oregon to Singapore

Enter your travel dates to find the best prices.

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 14 November 2025.

Tue 25-1110:39BOI - SIN
2 stops30h 21mUnited Airlines
Sun 18-110:45SIN - BOI
2 stops48h 06mUnited Airlines
Deal found 13-11S$ 1,383
Tue 25-1113:33BOI - SIN
2 stops44h 17mMultiple Airlines
Sun 18-108:15SIN - BOI
2 stops21h 55mMultiple Airlines
Deal found 12-11S$ 1,488
Wed 19-1118:52EUG - SIN
1 stop21h 08mUnited Airlines
Sun 23-1110:10SIN - EUG
1 stop23h 40mUnited Airlines
Deal found 12-11S$ 1,527
Thu 11-1206:00PDX - SIN
1 stop22h 15mUnited Airlines
Thu 18-1222:20SIN - PDX
2 stops38h 47mUnited Airlines
Deal found 12-11S$ 1,729
Thu 11-1217:49PDX - SIN
2 stops26h 16mMultiple Airlines
Thu 18-1215:45SIN - PDX
2 stops24h 27mMultiple Airlines
Deal found 12-11S$ 1,811
Thu 11-1215:15PDX - SIN
1 stop23h 45mAir Canada
Thu 18-1208:50SIN - PDX
1 stop16h 25mAir Canada
Deal found 12-11S$ 1,942
Sun 14-1215:15PDX - SIN
1 stop23h 45mMultiple Airlines
Sat 20-1223:55SIN - PDX
2 stops49h 20mMultiple Airlines
Deal found 12-11S$ 1,987
Sun 14-1217:49PDX - SIN
2 stops38h 51mChina Airlines
Sat 20-1214:25SIN - PDX
2 stops31h 53mChina Airlines
Deal found 12-11S$ 1,990
Wed 19-1107:00EUG - SIN
2 stops45h 25mKorean Air
Sat 22-1101:35SIN - EUG
2 stops31h 13mKorean Air
Deal found 13-11S$ 2,017
Sun 14-1217:49PDX - SIN
2 stops27h 16mChina Airlines
Sat 3-114:25SIN - PDX
2 stops26h 00mChina Airlines
Deal found 13-11S$ 2,072
Sun 14-1215:15PDX - SIN
1 stop23h 45mAir Canada
Sat 20-1208:50SIN - PDX
1 stop21h 50mAir Canada
Deal found 12-11S$ 2,223
Mon 29-1221:50BOI - SIN
2 stops44h 45mPhilippine Airlines
Mon 5-120:10SIN - BOI
2 stops42h 27mPhilippine Airlines
Deal found 14-11S$ 5,909

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 14 November 2025.

Round-trip from

S$ 1,034

One-way from

S$ 545

Popular in

December

Cheapest in

September

Average price

S$ 1,221
Air Canada
  • Air Canada
  • 31-3-16-4
  • 2 total stops
  • 50h 45m total
  • Oregon to Singapore
Search Deals
16-2
  • 16-2
  • 2 total stops
  • 45h 38m total
  • Oregon to Singapore
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (S$ 283 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (S$ 102 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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 200,618 searches. Data last updated 14 November 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

Tue 31-3

09:50-07:05

1 stop30h 15m

Singapore Changi

Thu 16-4

09:10-14:40

1 stop20h 30m

S$ 1,034

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 16-2

22:52-07:00

2 stops40h 08m

Singapore Changi

Sun 1-3

08:50-14:40

1 stop21h 50m

S$ 1,113

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sun 1-3

10:30-05:30

1 stop27h 00m

Singapore Changi

Sat 7-3

09:00-10:46

1 stop17h 46m

S$ 1,119

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Fri 20-3

19:00-07:00

1 stop21h 00m

Singapore Changi

Sun 5-4

09:10-09:15

1 stop39h 05m

S$ 1,147

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Mon 2-2

17:55-19:05

2 stops34h 10m

Singapore Changi

Mon 9-2

09:15-22:09

1 stop27h 54m

S$ 1,290

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Mon 2-2

15:43-00:40

2 stops41h 57m

Singapore Changi

Mon 9-2

14:25-23:01

2 stops23h 36m

S$ 1,303

EugeneSingapore

EUG - SIN

EUGSIN

Eugene

Tue 3-2

06:00-20:15

1 stop22h 15m

Singapore Changi

Wed 11-3

10:10-22:53

1 stop27h 43m

S$ 1,332

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 16-2

17:40-13:05

2 stops27h 25m

Singapore Changi

Sat 28-2

02:00-09:35

2 stops47h 35m

S$ 1,348

EugeneSingapore

EUG - SIN

EUGSIN

Eugene

Tue 3-2

06:04-20:25

2 stops46h 21m

Singapore Changi

Tue 10-3

01:35-16:27

2 stops29h 52m

S$ 1,357

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 16-2

17:41-20:10

2 stops34h 29m

Singapore Changi

Sat 28-2

01:25-20:53

2 stops35h 28m

S$ 1,364

Flights are sorted by cheapest return flights first.

Deals found on 13-11

Showing 1-10 of 20 results
1
2

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 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 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 S$ 901). Flying from Oregon to Singapore in December is currently the most expensive (average of S$ 1,078). 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.

How much does it cost for a return flight from Oregon to Singapore?

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.

  • What airport do you fly into for flights to Singapore from Oregon?

    Located just 16.9 km from the city centre, Singapore Changi (SIN) is the airport most travelers will use when flying to Singapore from Oregon.

  • How long is the flight from Oregon to Singapore?

    For as low as S$ 1,119, Air Canada can have you in Singapore from Oregon in 27h. The distance between Oregon and Singapore is about 13073 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Oregon to Singapore?

    The most popular route from Oregon to Singapore is Portland - Singapore Changi. You may also consider Boise Air Term. Gowen Fld - Singapore Changi or Eugene - Singapore Changi.

  • 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 holiday 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 S$ 901). Flying from Oregon to Singapore in December is currently the most expensive (average of S$ 1,078). 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.

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 Oregon to Singapore?

Deals for Oregon to Singapore flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights helps you find that perfect flight to Singapore from Oregon 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 Oregon to Singapore with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Oregon to Singapore flexibly with Cheapflights today.

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

Yes! Start tracking prices for Oregon to Singapore flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.