Cheap flights from Portland to Singapore from S$ 503
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 6-11. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SIN
30 Nov — 7 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portland to Singapore Changi are usually found in September or May, booked 75 days in advance, depart on a Monday or Tuesday and return on a Monday
Cheap flight deals from Portland to Singapore
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Singapore (SIN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 31 October 2025.
Explore the most affordable flight options available from Portland to Singapore. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 October 2025.
Sat 1-1123:59PDX - SIN
2 stops40h 01mMultiple Airlines
Sun 16-1108:50SIN - PDX
1 stop16h 25mMultiple Airlines
Deal found 29-10S$ 1,051
Sat 1-1119:38PDX - SIN
2 stops44h 22mAir Canada
Sun 16-1108:50SIN - PDX
2 stops25h 46mAir Canada
Deal found 30-10S$ 1,173
Sat 29-1119:00PDX - SIN
2 stops24h 15mMultiple Airlines
Sun 7-1223:25SIN - PDX
2 stops31h 15mMultiple Airlines
Deal found 29-10S$ 1,220
Fri 7-1106:00PDX - SIN
2 stops31h 25mChina Eastern
Wed 12-1100:25SIN - PDX
2 stops31h 57mChina Eastern
Deal found 29-10S$ 1,300
Fri 7-1106:00PDX - SIN
2 stops46h 25mChina Eastern
Fri 14-1100:25SIN - PDX
2 stops31h 57mChina Eastern
Deal found 29-10S$ 1,390
Fri 7-1106:00PDX - SIN
1 stop22h 15mUnited Airlines
Sat 15-1110:10SIN - PDX
1 stop26h 28mUnited Airlines
Deal found 29-10S$ 1,461
Fri 7-1107:30PDX - SIN
1 stop20h 45mUnited Airlines
Thu 13-1110:10SIN - PDX
1 stop20h 36mUnited Airlines
Deal found 29-10S$ 1,526
Sat 29-1114:50PDX - SIN
2 stops29h 05mCathay Pacific
Sat 6-1201:25SIN - PDX
2 stops32h 03mCathay Pacific
Deal found 29-10S$ 1,530
Best flights from Portland to Singapore
Discover carefully curated flight deals from Portland to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 October 2025.
Wed 4-209:50PDX - SIN
2 stops23h 05mAir Canada
Sun 15-208:50SIN - PDX
1 stop16h 25mAir Canada
Deal found 28-10S$ 1,011
Thu 15-107:10PDX - SIN
2 stops25h 00mKorean Air
Sun 25-101:35SIN - PDX
2 stops30h 55mKorean Air
Deal found 30-10S$ 1,125
Fri 16-115:15PDX - SIN
1 stop23h 45mAir Canada
Tue 27-108:50SIN - PDX
2 stops31h 49mAir Canada
Deal found 30-10S$ 1,096
Tue 13-107:10PDX - SIN
2 stops25h 00mKorean Air
Sun 25-101:35SIN - PDX
2 stops33h 18mKorean Air
Deal found 30-10S$ 1,125
Wed 14-117:30PDX - SIN
2 stops38h 40mKorean Air
Sun 25-101:35SIN - PDX
2 stops27h 09mKorean Air
Deal found 30-10S$ 1,125
Wed 14-106:25PDX - SIN
2 stops25h 45mKorean Air
Sun 1-222:30SIN - PDX
2 stops34h 00mKorean Air
Deal found 30-10S$ 1,125
Sun 18-117:30PDX - SIN
2 stops38h 40mKorean Air
Sun 25-101:35SIN - PDX
2 stops27h 09mKorean Air
Deal found 30-10S$ 1,133
Wed 14-107:10PDX - SIN
2 stops25h 00mKorean Air
Fri 30-101:35SIN - PDX
2 stops27h 09mKorean Air
Deal found 30-10S$ 1,157
Sat 17-107:10PDX - SIN
2 stops25h 00mKorean Air
Tue 27-122:30SIN - PDX
2 stops34h 00mKorean Air
Deal found 30-10S$ 1,157
Tue 13-106:25PDX - SIN
2 stops25h 45mKorean Air
Sat 31-101:35SIN - PDX
2 stops27h 09mKorean Air
Deal found 30-10S$ 1,157
Tue 13-107:10PDX - SIN
2 stops25h 00mKorean Air
Fri 30-101:35SIN - PDX
2 stops27h 09mKorean Air
Deal found 30-10S$ 1,157
Tue 10-306:30PDX - SIN
2 stops26h 40mKorean Air
Thu 12-322:30SIN - PDX
2 stops29h 44mKorean Air
Deal found 28-10S$ 1,157
Last-minute flights from Portland to Singapore
Discover last-minute flight deals from Portland to Singapore. Data last updated 31 October 2025 and is based on user searches.
Wed 5-1113:38PDX - SIN
2 stops27h 57mMultiple Airlines
Sun 16-1110:35SIN - PDX
2 stops29h 34mMultiple Airlines
Deal found 29-10S$ 5,651
Wed 5-1115:15PDX - SIN
1 stop23h 45mAir Canada
Sun 16-1121:00SIN - PDX
2 stops28h 15mAir Canada
Deal found 29-10S$ 6,686
Thu 6-1115:15PDX - SIN
2 stops35h 55mMultiple Airlines
Mon 17-1114:10SIN - PDX
2 stops35h 05mMultiple Airlines
Deal found 30-10S$ 6,824
Thu 6-1100:40PDX - SIN
2 stops31h 30mDelta
Sat 15-1110:40SIN - PDX
2 stops42h 38mDelta
Deal found 29-10S$ 7,296
Fri 7-1106:00PDX - SIN
2 stops31h 25mChina Eastern
Wed 12-1100:25SIN - PDX
2 stops31h 57mChina Eastern
Deal found 29-10S$ 1,300
Fri 7-1106:00PDX - SIN
1 stop22h 15mUnited Airlines
Sat 15-1110:10SIN - PDX
1 stop26h 28mUnited Airlines
Deal found 29-10S$ 1,461
Fri 7-1107:30PDX - SIN
1 stop20h 45mUnited Airlines
Thu 13-1110:10SIN - PDX
1 stop20h 36mUnited Airlines
Deal found 29-10S$ 1,526
Fri 7-1113:25PDX - SIN
1 stop34h 50mKLM
Fri 14-1101:40SIN - PDX
2 stops32h 03mKLM
Deal found 29-10S$ 2,872
Fri 7-1113:25PDX - SIN
1 stop34h 50mKLM
Wed 12-1101:40SIN - PDX
2 stops30h 42mKLM
Deal found 29-10S$ 2,911
One-way flights from Portland to Singapore
Search for one-way flight options from Portland to Singapore. Find affordable one-way fares based on user searches. Data last updated 31 October 2025.
Thu 6-1115:15PDX - SIN
1 stop23h 45mAir Canada
Deal found 30-10S$ 503
Mon 24-1115:15PDX - SIN
2 stops28h 00mAir Canada
Deal found 30-10S$ 505
Mon 9-209:50PDX - SIN
2 stops27h 05mAir Canada
Deal found 30-10S$ 512
Mon 9-221:30PDX - SIN
1 stop28h 15mSingapore Airlines
Deal found 30-10S$ 579
Wed 7-117:51PDX - SIN
2 stops36h 04mMultiple Airlines
Deal found 29-10S$ 611
Fri 7-1115:26PDX - SIN
3 stops39h 44mMultiple Airlines
Deal found 28-10S$ 711
Thu 6-1107:30PDX - SIN
2 stops25h 25mANA
Deal found 30-10S$ 721
Mon 24-1115:54PDX - SIN
1 stop24h 06mUnited Airlines
Deal found 30-10S$ 738
Fri 13-214:40PDX - SIN
2 stops36h 35mCathay Pacific
Deal found 30-10S$ 756
Cheapflights Fare Finder
Customise your flight search to find flights from Portland 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 31 October 2025.
Use the filters below to find and compare flights from Portland to Singapore that are best for you.
Fly from
Portland
Fly to
Singapore
Route
Depart
Return
Price
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 4-2
09:50-00:55
2 stops23h 05m
Singapore Changi
Sun 15-2
08:50-09:15
1 stop16h 25m
S$ 1,011
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Fri 16-1
15:15-07:00
1 stop23h 45m
Singapore Changi
Tue 27-1
08:50-00:39
2 stops31h 49m
S$ 1,096
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Thu 15-1
07:10-00:10
2 stops25h 00m
Singapore Changi
Sun 25-1
01:35-16:30
2 stops30h 55m
S$ 1,125
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 13-1
07:10-00:10
2 stops25h 00m
Singapore Changi
Sun 25-1
01:35-18:53
2 stops33h 18m
S$ 1,125
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 14-1
17:30-00:10
2 stops38h 40m
Singapore Changi
Sun 25-1
01:35-12:44
2 stops27h 09m
S$ 1,125
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 14-1
06:25-00:10
2 stops25h 45m
Singapore Changi
Sun 1-2
22:30-16:30
2 stops34h 00m
S$ 1,125
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sun 18-1
17:30-00:10
2 stops38h 40m
Singapore Changi
Sun 25-1
01:35-12:44
2 stops27h 09m
S$ 1,133
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Wed 14-1
07:10-00:10
2 stops25h 00m
Singapore Changi
Fri 30-1
01:35-12:44
2 stops27h 09m
S$ 1,157
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Sat 17-1
07:10-00:10
2 stops25h 00m
Singapore Changi
Tue 27-1
22:30-16:30
2 stops34h 00m
S$ 1,157
PortlandSingapore
PDX - SIN
PDXSIN
Portland
Tue 13-1
06:25-00:10
2 stops25h 45m
Singapore Changi
Sat 31-1
01:35-12:44
2 stops27h 09m
S$ 1,157
Flights are sorted by cheapest return flights first.
Deals found on 29-10
Showing 1-10 of 18 results
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Best time to book a flight from Portland to Singapore
Have a flexible travel schedule? Discover the best time to fly to Singapore from Portland 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 Portland to Singapore
How far ahead should I book a flight from Portland to Singapore?
Use this chart to determine the optimal time to book a return flight from Portland to Singapore. Price data was last updated on 24 October 2025.
To ensure you get the cheapest price possible for a flight from Portland to Singapore, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Portland to Singapore?
Currently, September is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 900). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,169). 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 Portland to Singapore?
Related info for your journey
Find useful and relevant information for your journey from Portland 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 Portland to Singapore?
There are many flights that can get you from Portland to Singapore in 23h 05m. Fly via Air Canada or Korean Air to get the fastest option. The distance between Portland and Singapore is about 13073 km. Both multi-stop and direct flights can be found to your destination and back.
Can I find deals for flights from Portland to Singapore that include hotel bookings?
Yes. In addition to deals on Portland to Singapore flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portland to Singapore?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Singapore.
Can I find deals for business class flights from Portland to Singapore?
Yes. Cheapflights offers flight deals from Portland 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 Portland to Singapore?
Currently, September is the cheapest month in which you can book a flight from Portland to Singapore (average of S$ 900). Flying from Portland to Singapore in December is currently the most expensive (average of S$ 1,169). 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.
Explore flights to Singapore departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 October 2025.
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 Portland to Singapore?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Singapore from Portland today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Portland to Singapore?
Cheapflights helps you find that perfect flight to Singapore from Portland 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 Portland to Singapore with no change fees?
Yes, we can. To see specific flights from Portland to Singapore with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Portland to Singapore become cheaper?
Not ready to book yet? You can track prices for flights from Portland to Singapore on Cheapflights with our Price Alert feature and get notified when better prices are available.
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