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$475+ Cheap flights from Oregon to Singapore (SIN)

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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
avr. 6 — avr. 131
dim. 4/6
dim. 4/13
1 adult, Economy
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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 avril 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$706
(Air Canada)

One-way from

$475
(Air Canada)

Popular in

December

Cheapest in

February

Average price

$1,091
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 Oregon to Singapore Changi
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One-way flight from Oregon to Singapore Changi
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 avril 1, 2025.

This Air Canada deal was found by Cheapflights users on 3/31. 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.
jeu. 9/410:00 amPDX - SIN
1 stop30h 05mAir Canada
jeu. 9/259:10 amSIN - PDX
1 stop24h 36mAir Canada
Deal found 3/31$706
This Air Canada deal was found by Cheapflights users on 3/31. 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.
mer. 10/157:40 pmPDX - SIN
2 stops36h 40mMultiple Airlines
mar. 10/282:20 amSIN - PDX
2 stops22h 14mMultiple Airlines
Deal found 3/31$752
This Delta deal was found by Cheapflights users on 3/31. 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.
jeu. 8/289:10 amPDX - SIN
2 stops28h 50mDelta
lun. 9/157:30 amSIN - PDX
2 stops26h 43mDelta
Deal found 3/31$801
This Delta deal was found by Cheapflights users on 3/31. 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.
lun. 9/155:40 amBOI - SIN
2 stops33h 20mDelta
jeu. 9/257:30 amSIN - BOI
2 stops30h 29mDelta
Deal found 3/31$801
This United Airlines deal was found by Cheapflights users on 3/31. 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.
jeu. 8/287:45 amPDX - SIN
1 stop19h 40mUnited Airlines
mer. 9/108:45 amSIN - PDX
1 stop18h 58mUnited Airlines
Deal found 3/31$881
This United deal was found by Cheapflights users on 3/31. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/18:40 amBOI - SIN
1 stop19h 45mUnited Airlines
ven. 10/108:45 amSIN - BOI
1 stop24h 56mUnited Airlines
Deal found 3/31$926
This Gurufare deal was found by Cheapflights users on 3/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 5/87:40 amPDX - SIN
2 stops25h 00mKorean Air
mer. 5/141:10 amSIN - PDX
2 stops29h 58mKorean Air
Deal found 3/30$929
This Justfly.com deal was found by Cheapflights users on 3/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/238:40 amBOI - SIN
2 stops24h 30mKorean Air
mer. 12/311:00 amSIN - BOI
2 stops27h 20mKorean Air
Deal found 3/30$932
This American Airlines deal was found by Cheapflights users on 3/31. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/177:00 amPDX - SIN
2 stops26h 20mAmerican Airlines
lun. 9/291:55 amSIN - PDX
2 stops25h 50mAmerican Airlines
Deal found 3/31$938
This Gurufare deal was found by Cheapflights users on 3/31. 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.
mar. 9/167:00 amPDX - SIN
2 stops32h 10mJapan Airlines
lun. 9/291:55 amSIN - PDX
2 stops34h 35mJapan Airlines
Deal found 3/31$958
This Singapore Airlines deal was found by Cheapflights users on 3/31. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 5/74:20 pmBOI - SIN
1 stop35h 15mMultiple Airlines
lun. 5/128:45 pmSIN - BOI
1 stop29h 57mMultiple Airlines
Deal found 3/31$1,002
This Singapore Airlines deal was found by Cheapflights users on 3/31. 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 Singapore Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 10/157:30 amPDX - SIN
2 stops26h 25mSingapore Airlines
mer. 10/299:15 amSIN - PDX
1 stop19h 04mSingapore Airlines
Deal found 3/31$1,050

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 avril 1, 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

jeu. 9/4

10:00 am-7:05 am

1 stop30h 05m

Singapore Changi

jeu. 9/25

9:10 am-6:46 pm

1 stop24h 36m

$706

PortlandSingapore

PDX - SIN

PDXSIN

Portland

sam. 5/10

3:25 pm-12:50 am

2 stops42h 25m

Singapore Changi

mar. 6/10

9:10 am-6:45 pm

1 stop24h 35m

$775

PortlandSingapore

PDX - SIN

PDXSIN

Portland

jeu. 8/28

9:10 am-11:40 pm

2 stops23h 30m

Singapore Changi

jeu. 9/11

7:30 am-8:49 pm

2 stops28h 19m

$801

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

lun. 9/15

5:40 am-5:00 am

2 stops33h 20m

Singapore Changi

jeu. 9/25

7:30 am-11:59 pm

2 stops30h 29m

$801

PortlandSingapore

PDX - SIN

PDXSIN

Portland

jeu. 8/28

7:45 am-6:25 pm

1 stop19h 40m

Singapore Changi

mer. 9/10

8:45 am-12:43 pm

1 stop18h 58m

$881

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

jeu. 5/15

2:00 pm-6:45 am

1 stop26h 45m

Singapore Changi

ven. 5/30

8:45 am-9:44 pm

1 stop26h 59m

$926

PortlandSingapore

PDX - SIN

PDXSIN

Portland

jeu. 5/8

7:40 am-11:40 pm

2 stops25h 00m

Singapore Changi

mer. 5/14

1:10 am-4:08 pm

2 stops29h 58m

$929

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mer. 9/17

7:00 am-12:20 am

2 stops26h 20m

Singapore Changi

lun. 9/29

1:55 am-12:45 pm

2 stops25h 50m

$938

PortlandSingapore

PDX - SIN

PDXSIN

Portland

mar. 9/16

7:00 am-6:10 am

2 stops32h 10m

Singapore Changi

lun. 9/29

1:55 am-9:30 pm

2 stops34h 35m

$958

BoiseSingapore

BOI - SIN

BOISIN

Boise Air Term. Gowen Fld

mer. 5/7

4:20 pm-5:35 pm

1 stop35h 15m

Singapore Changi

lun. 5/12

8:45 pm-12:42 pm

1 stop29h 57m

$1,002

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 20 results
1
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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 $1,011). Flying from Oregon 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 OR to SIN?

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 avril 1, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Oregon to Singapore as you normally would.

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 avril 1, 2025.
Read reviews from past customers who have flown Korean Air, Japan Airlines and ANA from Oregon to Singapore. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,052 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Japan Airlines
8.3
Very good
1,440 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
ANA
8.3
Very good
831 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Singapore Airlines
8.1
Very good
1,286 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
8.0
Very good
7,898 reviews
Korean Air
8.4
Very good
1,052 reviews

Boarding

8.5

Food

8.1

Overall

8.4

Comfort

8.3

Entertainment

8.2

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

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 10.5 mi from the city center, Singapore Changi (SIN) is the airport most travelers will use when flying to Singapore from Oregon.

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

    Most travelers choose Portland - Singapore Changi, Boise Air Term. Gowen Fld - Singapore Changi or Eugene - Singapore Changi when deciding on the best route from Oregon to Singapore.

  • 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 $1,011). Flying from Oregon 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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Alternative routes for Oregon to Singapore

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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 avril 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$727Average$996FlexibilityNo cancel feeOn-time67%
DeltaCheapest$800Average$921FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$845Average$1,221FlexibilityNo cancel feeOn-time69%
Korean AirCheapest$930Average$931FlexibilityNo cancel feeOn-time81%
Singapore AirlinesCheapest$1,014Average$1,288FlexibilityNo cancel feeOn-time81%
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