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Cheap flights from Oregon to Singapore from S$ 580

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 18-2. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
17 Feb — 24 Feb1
1 adult
1 adult, Economy, 0 bags

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 18 January 2026.

Round-trip from

S$ 1,050

One-way from

S$ 580

Popular in

December

Cheapest in

September

Average price

S$ 1,133
Singapore Airlines
  • Singapore Airlines
  • 20-5-26-5
  • 2 total stops
  • 51h 01m total
  • Oregon to Singapore
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18-2
  • 18-2
  • 2 total stops
  • 29h 25m total
  • Oregon to Singapore
Search Deals
Highest demand for flights based on searches. 14% potential increase in price (S$ 279 potential increase over avg. return price).
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Cheapest flight prices on average. 6% potential price decrease (S$ 105 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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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 18 January 2026.

Wed 20-514:48
PDX
-
SIN
1 stop23h 27m
Singapore Airlines
Tue 26-509:00
SIN
-
PDX
1 stop27h 34m
Singapore Airlines
Deal found 18-1S$ 1,050
Sat 15-817:34
PDX
-
SIN
1 stop23h 16m
Singapore Airlines
Mon 31-809:15
SIN
-
PDX
1 stop26h 33m
Singapore Airlines
Deal found 16-1S$ 1,072
Thu 14-505:00
PDX
-
SIN
1 stop21h 35m
Singapore Airlines
Thu 25-609:00
SIN
-
PDX
1 stop22h 50m
Singapore Airlines
Deal found 16-1S$ 1,121
Tue 17-221:48
PDX
-
SIN
1 stop29h 17m
Singapore Airlines
Wed 4-309:15
SIN
-
PDX
1 stop20h 22m
Singapore Airlines
Deal found 17-1S$ 1,126
Sun 13-917:35
PDX
-
SIN
2 stops24h 30m
Multiple Airlines
Sun 27-922:45
SIN
-
PDX
2 stops33h 53m
Multiple Airlines
Deal found 15-1S$ 1,127
Mon 5-1017:40
PDX
-
SIN
1 stop23h 10m
Singapore Airlines
Wed 14-1009:25
SIN
-
PDX
2 stops26h 06m
Singapore Airlines
Deal found 16-1S$ 1,143
Sun 26-417:30
PDX
-
SIN
2 stops28h 10m
STARLUX Airlines
Tue 5-514:00
SIN
-
PDX
2 stops23h 53m
STARLUX Airlines
Deal found 17-1S$ 1,182
Sat 15-817:36
PDX
-
SIN
2 stops28h 04m
STARLUX Airlines
Mon 31-814:00
SIN
-
PDX
2 stops25h 10m
STARLUX Airlines
Deal found 17-1S$ 1,188
Mon 6-407:05
PDX
-
SIN
1 stop21h 05m
Singapore Airlines
Mon 20-409:15
SIN
-
PDX
1 stop22h 15m
Singapore Airlines
Deal found 15-1S$ 1,193
Mon 4-517:49
PDX
-
SIN
1 stop23h 01m
Singapore Airlines
Thu 21-509:00
SIN
-
PDX
1 stop22h 50m
Singapore Airlines
Deal found 16-1S$ 1,198
Mon 4-521:30
PDX
-
SIN
2 stops24h 10m
STARLUX Airlines
Thu 21-514:00
SIN
-
PDX
2 stops22h 24m
STARLUX Airlines
Deal found 16-1S$ 1,206
Mon 2-320:27
BOI
-
SIN
1 stop30h 18m
Multiple Airlines
Mon 9-320:45
SIN
-
BOI
1 stop40h 15m
Multiple Airlines
Deal found 16-1S$ 1,209

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 18 January 2026.
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

Fri 8-5

20:30-17:35

1 stop30h 05m

Singapore Changi

Thu 14-5

09:00-23:03

1 stop29h 03m

S$ 1,188

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 6-4

07:05-19:10

1 stop21h 05m

Singapore Changi

Mon 20-4

09:15-16:30

1 stop22h 15m

S$ 1,193

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4-5

17:49-07:50

1 stop23h 01m

Singapore Changi

Thu 21-5

09:00-16:50

1 stop22h 50m

S$ 1,198

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 4-5

21:30-12:40

2 stops24h 10m

Singapore Changi

Thu 21-5

14:00-21:24

2 stops22h 24m

S$ 1,206

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Mon 6-4

17:45-12:40

2 stops27h 55m

Singapore Changi

Mon 20-4

14:00-21:38

2 stops22h 38m

S$ 1,206

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

Mon 2-3

20:27-17:45

1 stop30h 18m

Singapore Changi

Mon 9-3

20:45-23:00

1 stop40h 15m

S$ 1,209

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Sat 2-5

07:00-19:10

1 stop21h 10m

Singapore Changi

Sun 21-6

09:00-16:50

1 stop22h 50m

S$ 1,252

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 26-3

07:05-19:05

1 stop21h 00m

Singapore Changi

Sat 18-4

09:00-21:38

1 stop27h 38m

S$ 1,264

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Wed 18-2

08:30-08:45

2 stops32h 15m

Singapore Changi

Wed 4-3

20:15-22:41

2 stops42h 26m

S$ 1,279

PortlandSingapore

PDX - SIN

PDXSIN

Portland

Thu 14-5

05:00-17:35

1 stop21h 35m

Singapore Changi

Thu 25-6

09:00-21:35

1 stop27h 35m

S$ 1,283

Flights are sorted by cheapest return flights first.

Deals found on 16-1

Showing 1-10 of 39 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 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$ 893). Flying from Oregon to Singapore in December is currently the most expensive (average of S$ 1,066). 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$ 1,193, Singapore Airlines can have you in Singapore from Oregon in 21h 05m. 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$ 893). Flying from Oregon to Singapore in December is currently the most expensive (average of S$ 1,066). 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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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.

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